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[GNUnet-SVN] [taler-wallet-android] 01/01: import into repo


From: gnunet
Subject: [GNUnet-SVN] [taler-wallet-android] 01/01: import into repo
Date: Tue, 20 Aug 2019 22:55:37 +0200

This is an automated email from the git hooks/post-receive script.

dold pushed a commit to branch master
in repository wallet-android.

commit 884fa0b47579bef3cf29450acdce73c2ee5304fe
Author: Florian Dold <address@hidden>
AuthorDate: Tue Aug 20 22:55:02 2019 +0200

    import into repo
---
 .gitignore                                         |  14 +
 .idea/codeStyles/Project.xml                       |  10 +
 .idea/codeStyles/codeStyleConfig.xml               |   5 +
 .idea/dictionaries/dold.xml                        |   7 +
 .idea/encodings.xml                                |   4 +
 .idea/gradle.xml                                   |  19 ++
 .idea/misc.xml                                     |   9 +
 .idea/runConfigurations.xml                        |  12 +
 akono/build.gradle                                 |   2 +
 app/.gitignore                                     |   2 +
 app/build.gradle                                   |  64 ++++
 app/proguard-rules.pro                             |  21 ++
 .../net/taler/wallet/ExampleInstrumentedTest.kt    |  24 ++
 app/src/main/AndroidManifest.xml                   |  24 ++
 app/src/main/java/net/taler/wallet/MainActivity.kt | 138 +++++++++
 .../java/net/taler/wallet/PaymentSuccessful.kt     |  37 +++
 .../main/java/net/taler/wallet/PromptPayment.kt    | 143 +++++++++
 app/src/main/java/net/taler/wallet/Settings.kt     |  48 +++
 app/src/main/java/net/taler/wallet/ShowBalance.kt  | 164 ++++++++++
 .../main/java/net/taler/wallet/WalletHistory.kt    |  31 ++
 .../main/java/net/taler/wallet/WalletViewModel.kt  | 331 +++++++++++++++++++++
 .../res/drawable-v24/ic_launcher_foreground.xml    |  34 +++
 .../main/res/drawable/ic_history_black_24dp.xml    |   9 +
 app/src/main/res/drawable/ic_home_black_24dp.xml   |   9 +
 .../main/res/drawable/ic_launcher_background.xml   |  74 +++++
 app/src/main/res/drawable/ic_menu_camera.xml       |  12 +
 app/src/main/res/drawable/ic_menu_gallery.xml      |   9 +
 app/src/main/res/drawable/ic_menu_manage.xml       |   9 +
 app/src/main/res/drawable/ic_menu_send.xml         |   9 +
 app/src/main/res/drawable/ic_menu_share.xml        |   9 +
 app/src/main/res/drawable/ic_menu_slideshow.xml    |   9 +
 app/src/main/res/drawable/side_nav_bar.xml         |   9 +
 app/src/main/res/layout/activity_main.xml          |  26 ++
 app/src/main/res/layout/app_bar_main.xml           |  41 +++
 app/src/main/res/layout/balance_row.xml            |  31 ++
 app/src/main/res/layout/content_main.xml           |  24 ++
 .../res/layout/fragment_payment_successful.xml     |  38 +++
 .../main/res/layout/fragment_prompt_payment.xml    | 114 +++++++
 app/src/main/res/layout/fragment_settings.xml      |  19 ++
 app/src/main/res/layout/fragment_show_balance.xml  |  51 ++++
 app/src/main/res/layout/fragment_show_history.xml  |  13 +
 app/src/main/res/layout/nav_header_main.xml        |  37 +++
 app/src/main/res/menu/activity_main_drawer.xml     |  21 ++
 app/src/main/res/menu/main.xml                     |   8 +
 app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml |   5 +
 .../res/mipmap-anydpi-v26/ic_launcher_round.xml    |   5 +
 app/src/main/res/mipmap-hdpi/ic_launcher.png       | Bin 0 -> 2963 bytes
 app/src/main/res/mipmap-hdpi/ic_launcher_round.png | Bin 0 -> 4905 bytes
 app/src/main/res/mipmap-mdpi/ic_launcher.png       | Bin 0 -> 2060 bytes
 app/src/main/res/mipmap-mdpi/ic_launcher_round.png | Bin 0 -> 2783 bytes
 app/src/main/res/mipmap-xhdpi/ic_launcher.png      | Bin 0 -> 4490 bytes
 .../main/res/mipmap-xhdpi/ic_launcher_round.png    | Bin 0 -> 6895 bytes
 app/src/main/res/mipmap-xxhdpi/ic_launcher.png     | Bin 0 -> 6387 bytes
 .../main/res/mipmap-xxhdpi/ic_launcher_round.png   | Bin 0 -> 10413 bytes
 app/src/main/res/mipmap-xxxhdpi/ic_launcher.png    | Bin 0 -> 9128 bytes
 .../main/res/mipmap-xxxhdpi/ic_launcher_round.png  | Bin 0 -> 15132 bytes
 app/src/main/res/navigation/nav_graph.xml          |  22 ++
 app/src/main/res/values-v21/styles.xml             |   7 +
 app/src/main/res/values/colors.xml                 |   6 +
 app/src/main/res/values/dimens.xml                 |   8 +
 app/src/main/res/values/strings.xml                |  19 ++
 app/src/main/res/values/styles.xml                 |  17 ++
 .../test/java/net/taler/wallet/ExampleUnitTest.kt  |  17 ++
 build.gradle                                       |  28 ++
 gradle.properties                                  |  21 ++
 gradle/wrapper/gradle-wrapper.jar                  | Bin 0 -> 54329 bytes
 gradle/wrapper/gradle-wrapper.properties           |   6 +
 gradlew                                            | 172 +++++++++++
 gradlew.bat                                        |  84 ++++++
 settings.gradle                                    |   1 +
 70 files changed, 2142 insertions(+)

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..97cbdf1
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,14 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+/akono/akono.aar
diff --git a/.idea/codeStyles/Project.xml b/.idea/codeStyles/Project.xml
new file mode 100644
index 0000000..1bec35e
--- /dev/null
+++ b/.idea/codeStyles/Project.xml
@@ -0,0 +1,10 @@
+<component name="ProjectCodeStyleConfiguration">
+  <code_scheme name="Project" version="173">
+    <JetCodeStyleSettings>
+      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+    </JetCodeStyleSettings>
+    <codeStyleSettings language="kotlin">
+      <option name="CODE_STYLE_DEFAULTS" value="KOTLIN_OFFICIAL" />
+    </codeStyleSettings>
+  </code_scheme>
+</component>
\ No newline at end of file
diff --git a/.idea/codeStyles/codeStyleConfig.xml 
b/.idea/codeStyles/codeStyleConfig.xml
new file mode 100644
index 0000000..79ee123
--- /dev/null
+++ b/.idea/codeStyles/codeStyleConfig.xml
@@ -0,0 +1,5 @@
+<component name="ProjectCodeStyleConfiguration">
+  <state>
+    <option name="USE_PER_PROJECT_SETTINGS" value="true" />
+  </state>
+</component>
\ No newline at end of file
diff --git a/.idea/dictionaries/dold.xml b/.idea/dictionaries/dold.xml
new file mode 100644
index 0000000..67d533a
--- /dev/null
+++ b/.idea/dictionaries/dold.xml
@@ -0,0 +1,7 @@
+<component name="ProjectDictionaryState">
+  <dictionary name="dold">
+    <words>
+      <w>taler</w>
+    </words>
+  </dictionary>
+</component>
\ No newline at end of file
diff --git a/.idea/encodings.xml b/.idea/encodings.xml
new file mode 100644
index 0000000..15a15b2
--- /dev/null
+++ b/.idea/encodings.xml
@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding" addBOMForNewFiles="with NO BOM" />
+</project>
\ No newline at end of file
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
new file mode 100644
index 0000000..afc8041
--- /dev/null
+++ b/.idea/gradle.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="distributionType" value="DEFAULT_WRAPPED" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/akono" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+        <option name="resolveModulePerSourceSet" value="false" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..b6ea2b1
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" 
project-jdk-name="JDK" project-jdk-type="JavaSDK">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/runConfigurations.xml b/.idea/runConfigurations.xml
new file mode 100644
index 0000000..7f68460
--- /dev/null
+++ b/.idea/runConfigurations.xml
@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option 
value="org.jetbrains.plugins.gradle.execution.test.runner.AllInPackageGradleConfigurationProducer"
 />
+        <option 
value="org.jetbrains.plugins.gradle.execution.test.runner.TestClassGradleConfigurationProducer"
 />
+        <option 
value="org.jetbrains.plugins.gradle.execution.test.runner.TestMethodGradleConfigurationProducer"
 />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/akono/build.gradle b/akono/build.gradle
new file mode 100644
index 0000000..17c3bfd
--- /dev/null
+++ b/akono/build.gradle
@@ -0,0 +1,2 @@
+configurations.maybeCreate("default")
+artifacts.add("default", file('akono.aar'))
\ No newline at end of file
diff --git a/app/.gitignore b/app/.gitignore
new file mode 100644
index 0000000..741e19c
--- /dev/null
+++ b/app/.gitignore
@@ -0,0 +1,2 @@
+/build
+/src/main/assets
diff --git a/app/build.gradle b/app/build.gradle
new file mode 100644
index 0000000..0651d3d
--- /dev/null
+++ b/app/build.gradle
@@ -0,0 +1,64 @@
+apply plugin: 'com.android.application'
+apply plugin: 'kotlin-android'
+apply plugin: 'kotlin-kapt'
+apply plugin: 'kotlin-android-extensions'
+
+android {
+    compileSdkVersion 29
+    buildToolsVersion "29.0.1"
+    defaultConfig {
+        applicationId "net.taler.wallet"
+        minSdkVersion 28
+        targetSdkVersion 29
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles 
getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+
+    compileOptions {
+        sourceCompatibility = 1.8
+        targetCompatibility = 1.8
+    }
+
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'androidx.appcompat:appcompat:1.0.2'
+    implementation 'androidx.core:core-ktx:1.0.2'
+    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
+    implementation 'com.google.android.material:material:1.0.0'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test:runner:1.2.0'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
+    implementation project(":akono")
+    implementation 'com.google.guava:guava:28.0-android'
+
+    def nav_version = "2.1.0-rc01"
+    implementation "androidx.navigation:navigation-fragment-ktx:$nav_version"
+    implementation "androidx.navigation:navigation-ui-ktx:$nav_version"
+
+    // ViewModel and LiveData
+    def lifecycle_version = "2.0.0"
+    implementation "androidx.lifecycle:lifecycle-extensions:$lifecycle_version"
+    implementation 
"androidx.lifecycle:lifecycle-common-java8:$lifecycle_version"
+    kapt "androidx.lifecycle:lifecycle-compiler:$lifecycle_version"
+
+    // QR codes
+    implementation 'com.google.zxing:core:3.4.0'
+    implementation 'com.journeyapps:zxing-android-embedded:3.2.0@aar'
+
+    // Nicer ProgressBar
+    implementation 'me.zhanghai.android.materialprogressbar:library:1.6.1'
+}
diff --git a/app/proguard-rules.pro b/app/proguard-rules.pro
new file mode 100644
index 0000000..f1b4245
--- /dev/null
+++ b/app/proguard-rules.pro
@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile
diff --git 
a/app/src/androidTest/java/net/taler/wallet/ExampleInstrumentedTest.kt 
b/app/src/androidTest/java/net/taler/wallet/ExampleInstrumentedTest.kt
new file mode 100644
index 0000000..e6b19ba
--- /dev/null
+++ b/app/src/androidTest/java/net/taler/wallet/ExampleInstrumentedTest.kt
@@ -0,0 +1,24 @@
+package net.taler.wallet
+
+import androidx.test.InstrumentationRegistry
+import androidx.test.runner.AndroidJUnit4
+
+import org.junit.Test
+import org.junit.runner.RunWith
+
+import org.junit.Assert.*
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+@RunWith(AndroidJUnit4::class)
+class ExampleInstrumentedTest {
+    @Test
+    fun useAppContext() {
+        // Context of the app under test.
+        val appContext = InstrumentationRegistry.getTargetContext()
+        assertEquals("net.taler.wallet", appContext.packageName)
+    }
+}
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
new file mode 100644
index 0000000..b675499
--- /dev/null
+++ b/app/src/main/AndroidManifest.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android";
+          package="net.taler.wallet">
+
+    <application
+            android:allowBackup="true"
+            android:icon="@mipmap/ic_launcher"
+            android:label="@string/app_name"
+            android:roundIcon="@mipmap/ic_launcher_round"
+            android:supportsRtl="true"
+            android:theme="@style/AppTheme">
+        <activity
+                android:name=".MainActivity"
+                android:label="@string/app_name"
+                android:theme="@style/AppTheme.NoActionBar">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
\ No newline at end of file
diff --git a/app/src/main/java/net/taler/wallet/MainActivity.kt 
b/app/src/main/java/net/taler/wallet/MainActivity.kt
new file mode 100644
index 0000000..e539cfd
--- /dev/null
+++ b/app/src/main/java/net/taler/wallet/MainActivity.kt
@@ -0,0 +1,138 @@
+package net.taler.wallet
+
+
+import android.content.Intent
+import android.os.Bundle
+import android.util.Log
+import android.view.Menu
+import android.view.MenuItem
+import android.view.View
+import androidx.appcompat.app.AppCompatActivity
+import androidx.appcompat.widget.Toolbar
+import androidx.core.view.GravityCompat
+import androidx.drawerlayout.widget.DrawerLayout
+import androidx.lifecycle.Observer
+import androidx.lifecycle.ViewModelProviders
+import androidx.navigation.findNavController
+import androidx.navigation.ui.AppBarConfiguration
+import androidx.navigation.ui.setupWithNavController
+import com.google.android.material.navigation.NavigationView
+import com.google.android.material.snackbar.Snackbar
+import com.google.zxing.integration.android.IntentIntegrator
+import com.google.zxing.integration.android.IntentResult
+import me.zhanghai.android.materialprogressbar.MaterialProgressBar
+
+class MainActivity : AppCompatActivity(), 
NavigationView.OnNavigationItemSelectedListener {
+
+    lateinit var model: WalletViewModel
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        val toolbar: Toolbar = findViewById(R.id.toolbar)
+        setSupportActionBar(toolbar)
+
+        val drawerLayout: DrawerLayout = findViewById(R.id.drawer_layout)
+        val navView: NavigationView = findViewById(R.id.nav_view)
+
+        navView.menu.getItem(0).isChecked = true
+
+
+        navView.setNavigationItemSelectedListener(this)
+
+        val navController = findNavController(R.id.nav_host_fragment)
+        val appBarConfiguration =
+            AppBarConfiguration(setOf(R.id.showBalance, R.id.settings, 
R.id.walletHistory), drawerLayout)
+
+        findViewById<Toolbar>(R.id.toolbar)
+            .setupWithNavController(navController, appBarConfiguration)
+
+        model = ViewModelProviders.of(this)[WalletViewModel::class.java]
+
+        val progressBar = findViewById<MaterialProgressBar>(R.id.progress_bar)
+        progressBar.visibility = View.INVISIBLE
+
+        model.init()
+        model.getBalances()
+    }
+
+    override fun onBackPressed() {
+        val drawerLayout: DrawerLayout = findViewById(R.id.drawer_layout)
+        if (drawerLayout.isDrawerOpen(GravityCompat.START)) {
+            drawerLayout.closeDrawer(GravityCompat.START)
+        } else {
+            super.onBackPressed()
+        }
+    }
+
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        // Inflate the menu; this adds items to the action bar if it is 
present.
+        menuInflater.inflate(R.menu.main, menu)
+        return true
+    }
+
+    override fun onOptionsItemSelected(item: MenuItem): Boolean {
+        // Handle action bar item clicks here. The action bar will
+        // automatically handle clicks on the Home/Up button, so long
+        // as you specify a parent activity in AndroidManifest.xml.
+        return when (item.itemId) {
+            R.id.action_settings -> true
+            else -> super.onOptionsItemSelected(item)
+        }
+    }
+
+    override fun onNavigationItemSelected(item: MenuItem): Boolean {
+        // Handle navigation view item clicks here.
+        when (item.itemId) {
+            R.id.nav_home -> {
+                
findNavController(R.id.nav_host_fragment).navigate(R.id.showBalance)
+            }
+            R.id.nav_settings -> {
+                
findNavController(R.id.nav_host_fragment).navigate(R.id.settings)
+            }
+            R.id.nav_history -> {
+                
findNavController(R.id.nav_host_fragment).navigate(R.id.walletHistory)
+            }
+        }
+        val drawerLayout: DrawerLayout = findViewById(R.id.drawer_layout)
+        drawerLayout.closeDrawer(GravityCompat.START)
+        return true
+    }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, data: 
Intent?) {
+        super.onActivityResult(requestCode, resultCode, data)
+        if (requestCode != IntentIntegrator.REQUEST_CODE) {
+            return
+        }
+
+        val scanResult: IntentResult? = 
IntentIntegrator.parseActivityResult(requestCode, resultCode, data)
+
+        if (scanResult == null || scanResult.contents == null) {
+            val bar: Snackbar = Snackbar.make(
+                findViewById(R.id.nav_host_fragment),
+                "QR Code scan canceled.",
+                Snackbar.LENGTH_SHORT
+            )
+            bar.show()
+            return
+        }
+
+        val url = scanResult.contents!!
+        if (!url.startsWith("talerpay:")) {
+            val bar: Snackbar = Snackbar.make(
+                findViewById(R.id.nav_host_fragment),
+                "Scanned QR code doesn't contain Taler payment.",
+                Snackbar.LENGTH_SHORT
+            )
+            bar.show()
+            return
+        }
+
+        Log.v(TAG, "navigating!")
+
+        
findNavController(R.id.nav_host_fragment).navigate(R.id.action_showBalance_to_promptPayment)
+        model.preparePay(url)
+    }
+
+
+}
diff --git a/app/src/main/java/net/taler/wallet/PaymentSuccessful.kt 
b/app/src/main/java/net/taler/wallet/PaymentSuccessful.kt
new file mode 100644
index 0000000..039fa73
--- /dev/null
+++ b/app/src/main/java/net/taler/wallet/PaymentSuccessful.kt
@@ -0,0 +1,37 @@
+package net.taler.wallet
+
+
+import android.os.Bundle
+import androidx.fragment.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Button
+import androidx.navigation.findNavController
+
+
+// TODO: Rename parameter arguments, choose names that match
+// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+private const val ARG_PARAM1 = "param1"
+private const val ARG_PARAM2 = "param2"
+
+/**
+ * A simple [Fragment] subclass.
+ *
+ */
+class PaymentSuccessful : Fragment() {
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        // Inflate the layout for this fragment
+        val view = inflater.inflate(R.layout.fragment_payment_successful, 
container, false)
+        view.findViewById<Button>(R.id.button_success_back).setOnClickListener 
{
+            activity!!.findNavController(R.id.nav_host_fragment).navigateUp()
+        }
+        return view
+    }
+
+
+}
diff --git a/app/src/main/java/net/taler/wallet/PromptPayment.kt 
b/app/src/main/java/net/taler/wallet/PromptPayment.kt
new file mode 100644
index 0000000..9486814
--- /dev/null
+++ b/app/src/main/java/net/taler/wallet/PromptPayment.kt
@@ -0,0 +1,143 @@
+package net.taler.wallet
+
+
+import android.annotation.SuppressLint
+import android.os.Bundle
+import android.util.Log
+import androidx.fragment.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Button
+import android.widget.TextView
+import androidx.lifecycle.Observer
+import androidx.lifecycle.ViewModelProviders
+import androidx.navigation.findNavController
+import com.google.android.material.snackbar.Snackbar
+import me.zhanghai.android.materialprogressbar.MaterialProgressBar
+
+
+// TODO: Rename parameter arguments, choose names that match
+// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+private const val ARG_PARAM1 = "param1"
+private const val ARG_PARAM2 = "param2"
+
+/**
+ * A simple [Fragment] subclass.
+ *
+ */
+class PromptPayment : Fragment() {
+
+    lateinit var model: WalletViewModel
+
+    var fragmentView: View? = null
+
+    fun triggerLoading(loading: Boolean) {
+        val myActivity = activity!!
+        val progressBar = 
myActivity.findViewById<MaterialProgressBar>(R.id.progress_bar)
+        if (loading) {
+            progressBar.visibility = View.VISIBLE
+        } else {
+            progressBar.visibility = View.INVISIBLE
+        }
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        model = activity?.run {
+            ViewModelProviders.of(this)[WalletViewModel::class.java]
+        } ?: throw Exception("Invalid Activity")
+
+        triggerLoading(true)
+    }
+
+    override fun onResume() {
+        super.onResume()
+        Log.v("taler-wallet", "called onResume on PromptPayment")
+        triggerLoading(model.payStatus.value == null || model.payStatus.value 
is PayStatus.Loading)
+    }
+
+    fun fillOrderInfo(view: View, contractTerms: ContractTerms, totalFees: 
Amount?) {
+        val feesAmountView = 
view.findViewById<TextView>(R.id.order_fees_amount)
+        val amountView = view.findViewById<TextView>(R.id.order_amount)
+        val summaryView = view.findViewById<TextView>(R.id.order_summary)
+        summaryView.text = contractTerms.summary
+        val amount = contractTerms.amount
+        @SuppressLint("SetTextI18n")
+        amountView.text = "${amount.amount} ${amount.currency}"
+        val feesBox = view.findViewById<View>(R.id.order_fees_box)
+        if (totalFees != null) {
+            @SuppressLint("SetTextI18n")
+            feesAmountView.text = "${totalFees.amount} ${totalFees.currency}"
+            feesBox.visibility = View.VISIBLE
+        } else {
+            feesBox.visibility = View.INVISIBLE
+        }
+
+    }
+
+    fun showPayStatus(view: View, payStatus: PayStatus) {
+        val promptPaymentDetails = 
view.findViewById<View>(R.id.prompt_payment_details)
+        val balanceInsufficientWarning = 
view.findViewById<View>(R.id.balance_insufficient_warning)
+        val confirmPaymentButton = 
view.findViewById<Button>(R.id.button_confirm_payment)
+        when (payStatus) {
+            is PayStatus.Prepared -> {
+                fillOrderInfo(view, payStatus.contractTerms, 
payStatus.totalFees)
+                promptPaymentDetails.visibility = View.VISIBLE
+                balanceInsufficientWarning.visibility = View.GONE
+                confirmPaymentButton.isEnabled = true
+
+                confirmPaymentButton.setOnClickListener {
+                    model.confirmPay(payStatus.proposalId)
+                    triggerLoading(true)
+                    confirmPaymentButton.isEnabled = false
+                }
+                triggerLoading(false)
+            }
+            is PayStatus.InsufficientBalance -> {
+                fillOrderInfo(view, payStatus.contractTerms, null)
+                promptPaymentDetails.visibility = View.VISIBLE
+                balanceInsufficientWarning.visibility = View.VISIBLE
+                confirmPaymentButton.isEnabled = false
+                triggerLoading(false)
+            }
+            is PayStatus.Success -> {
+                triggerLoading(false)
+                
activity!!.findNavController(R.id.nav_host_fragment).navigate(R.id.action_promptPayment_to_paymentSuccessful)
+            }
+            else -> {
+                val bar = Snackbar.make(view , "Unexpected result", 
Snackbar.LENGTH_SHORT)
+                bar.show()
+            }
+        }
+    }
+
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        // Inflate the layout for this fragment
+
+        val view = inflater.inflate(R.layout.fragment_prompt_payment, 
container, false)
+        fragmentView = view
+
+        val promptPaymentDetails = 
view.findViewById<View>(R.id.prompt_payment_details)
+        // Set invisible until data is loaded.
+        promptPaymentDetails.visibility = View.INVISIBLE
+
+        val abortPaymentButton = 
view.findViewById<Button>(R.id.button_abort_payment)
+
+        abortPaymentButton.setOnClickListener {
+            activity!!.findNavController(R.id.nav_host_fragment).navigateUp()
+        }
+
+        triggerLoading(true)
+
+        model.payStatus.observe(this, Observer {
+            showPayStatus(view, it)
+        })
+        return view
+    }
+}
diff --git a/app/src/main/java/net/taler/wallet/Settings.kt 
b/app/src/main/java/net/taler/wallet/Settings.kt
new file mode 100644
index 0000000..bf67f56
--- /dev/null
+++ b/app/src/main/java/net/taler/wallet/Settings.kt
@@ -0,0 +1,48 @@
+package net.taler.wallet
+
+
+import android.os.Bundle
+import androidx.fragment.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Button
+import androidx.lifecycle.ViewModelProviders
+
+
+// TODO: Rename parameter arguments, choose names that match
+// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+private const val ARG_PARAM1 = "param1"
+private const val ARG_PARAM2 = "param2"
+
+/**
+ * A simple [Fragment] subclass.
+ *
+ */
+class Settings : Fragment() {
+
+    private lateinit var model: WalletViewModel
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        model = activity?.run {
+            ViewModelProviders.of(this)[WalletViewModel::class.java]
+        } ?: throw Exception("Invalid Activity")
+
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        // Inflate the layout for this fragment
+        val view = inflater.inflate(R.layout.fragment_settings, container, 
false)
+        
view.findViewById<Button>(R.id.button_reset_wallet_dangerously).setOnClickListener
 {
+            model.dangerouslyReset()
+        }
+        return view
+    }
+
+
+}
diff --git a/app/src/main/java/net/taler/wallet/ShowBalance.kt 
b/app/src/main/java/net/taler/wallet/ShowBalance.kt
new file mode 100644
index 0000000..ba1bf14
--- /dev/null
+++ b/app/src/main/java/net/taler/wallet/ShowBalance.kt
@@ -0,0 +1,164 @@
+package net.taler.wallet
+
+
+import android.app.Activity
+import android.os.Bundle
+import android.util.Log
+import androidx.fragment.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Button
+import android.widget.TextView
+import androidx.lifecycle.Observer
+import androidx.lifecycle.ViewModelProviders
+import androidx.recyclerview.widget.DividerItemDecoration
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.snackbar.Snackbar
+import com.google.zxing.integration.android.IntentIntegrator
+import me.zhanghai.android.materialprogressbar.MaterialProgressBar
+
+class MyAdapter(private var myDataset: WalletBalances) : 
RecyclerView.Adapter<MyAdapter.MyViewHolder>() {
+
+    init {
+        setHasStableIds(false)
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): 
MyViewHolder {
+        val rowView = 
LayoutInflater.from(parent.context).inflate(R.layout.balance_row, parent, false)
+        return MyViewHolder(rowView)
+    }
+
+    override fun getItemCount(): Int {
+        return myDataset.byCurrency.size
+    }
+
+    override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
+        val currencyView = 
holder.rowView.findViewById<TextView>(R.id.balance_currency)
+        currencyView.text = myDataset.byCurrency[position].currency
+        val amountView = 
holder.rowView.findViewById<TextView>(R.id.balance_amount)
+        amountView.text = myDataset.byCurrency[position].amount
+    }
+
+    fun update(updatedBalances: WalletBalances) {
+        this.myDataset = updatedBalances
+        this.notifyDataSetChanged()
+    }
+
+    class MyViewHolder(val rowView: View) : RecyclerView.ViewHolder(rowView)
+}
+
+
+/**
+ * A simple [Fragment] subclass.
+ *
+ */
+class ShowBalance : Fragment() {
+
+    lateinit var balancesView: RecyclerView
+    lateinit var balancesPlaceholderView: TextView
+    lateinit var model: WalletViewModel
+    lateinit var balancesAdapter: MyAdapter
+
+    fun triggerLoading() {
+        val loading: Boolean =
+            (model.isBalanceLoading.value == true) || (model.balances.value == 
null) || !model.balances.value!!.initialized
+
+        val myActivity = activity!!
+        val progressBar = 
myActivity.findViewById<MaterialProgressBar>(R.id.progress_bar)
+        if (loading) {
+            progressBar.visibility = View.VISIBLE
+        } else {
+            progressBar.visibility = View.INVISIBLE
+        }
+    }
+
+    override fun onResume() {
+        super.onResume()
+        triggerLoading()
+        Log.v("taler-wallet", "called onResume on ShowBalance")
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+
+        model = activity?.run {
+            ViewModelProviders.of(this)[WalletViewModel::class.java]
+        } ?: throw Exception("Invalid Activity")
+
+
+        model.isBalanceLoading.observe(this, Observer { loading ->
+            Log.v("taler-wallet", "observing balance loading ${loading} in 
show balance")
+            triggerLoading()
+        })
+    }
+
+
+    private fun updateBalances(balances: WalletBalances) {
+        if (!balances.initialized) {
+            balancesPlaceholderView.visibility = View.GONE
+            balancesView.visibility = View.GONE
+        } else if (balances.byCurrency.isEmpty()) {
+            balancesPlaceholderView.visibility = View.VISIBLE
+            balancesView.visibility = View.GONE
+        } else {
+            balancesPlaceholderView.visibility = View.GONE
+            balancesView.visibility = View.VISIBLE
+        }
+        Log.v(TAG, "updating balances ${balances}")
+        balancesAdapter.update(balances)
+        //this.balancesView.adapter = balancesAdapter
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        // Inflate the layout for this fragment
+        val view = inflater.inflate(R.layout.fragment_show_balance, container, 
false)
+        val payQrButton = view.findViewById<Button>(R.id.button_pay_qr)
+        payQrButton.setOnClickListener {
+            val integrator = IntentIntegrator(activity)
+            integrator.setPrompt("Place merchant's QR Code inside the 
viewfinder rectangle to initiate payment.")
+            integrator.initiateScan(listOf("QR_CODE"))
+        }
+
+        val withdrawTestkudosButton = 
view.findViewById<Button>(R.id.button_withdraw_testkudos)
+        withdrawTestkudosButton.setOnClickListener {
+            model.withdrawTestkudos()
+        }
+
+        val payNfcButton = view.findViewById<Button>(R.id.button_pay_nfc)
+        payNfcButton.setOnClickListener {
+            val bar: Snackbar = Snackbar.make(view, "Sorry, NFC is not 
implemented yet!", Snackbar.LENGTH_SHORT)
+            bar.show()
+        }
+
+
+        this.balancesView = view.findViewById(R.id.list_balances)
+        this.balancesPlaceholderView = 
view.findViewById(R.id.list_balances_placeholder)
+
+        val myLayoutManager = LinearLayoutManager(context)
+        val myItemDecoration = DividerItemDecoration(context, 
myLayoutManager.orientation)
+
+        val balances = model.balances.value!!
+
+        balancesAdapter = MyAdapter(balances)
+
+        view.findViewById<RecyclerView>(R.id.list_balances).apply {
+            layoutManager = myLayoutManager
+            adapter = balancesAdapter
+            addItemDecoration(myItemDecoration)
+        }
+
+        updateBalances(balances)
+
+        model.balances.observe(this, Observer {
+            triggerLoading()
+            updateBalances(it)
+        })
+
+        return view
+    }
+}
diff --git a/app/src/main/java/net/taler/wallet/WalletHistory.kt 
b/app/src/main/java/net/taler/wallet/WalletHistory.kt
new file mode 100644
index 0000000..baf825e
--- /dev/null
+++ b/app/src/main/java/net/taler/wallet/WalletHistory.kt
@@ -0,0 +1,31 @@
+package net.taler.wallet
+
+
+import android.os.Bundle
+import androidx.fragment.app.Fragment
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+
+
+// TODO: Rename parameter arguments, choose names that match
+// the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+private const val ARG_PARAM1 = "param1"
+private const val ARG_PARAM2 = "param2"
+
+/**
+ * A simple [Fragment] subclass.
+ *
+ */
+class WalletHistory : Fragment() {
+
+    override fun onCreateView(
+        inflater: LayoutInflater, container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View? {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_show_history, container, 
false)
+    }
+
+
+}
diff --git a/app/src/main/java/net/taler/wallet/WalletViewModel.kt 
b/app/src/main/java/net/taler/wallet/WalletViewModel.kt
new file mode 100644
index 0000000..7c82f81
--- /dev/null
+++ b/app/src/main/java/net/taler/wallet/WalletViewModel.kt
@@ -0,0 +1,331 @@
+package net.taler.wallet
+
+import akono.AkonoJni
+import akono.ModuleResult
+import android.app.Application
+import android.content.res.AssetManager
+import android.util.Log
+import androidx.lifecycle.AndroidViewModel
+import androidx.lifecycle.MutableLiveData
+import org.json.JSONObject
+import java.io.InputStream
+import java.lang.Exception
+import java.nio.file.Paths
+
+val TAG = "taler-wallet"
+
+class AssetModuleLoader(private val assetManager: AssetManager, private val 
rootPath: String = "node_modules") :
+    AkonoJni.LoadModuleHandler {
+
+    private fun makeResult(localPath: String, stream: InputStream): 
ModuleResult {
+        val moduleString = stream.bufferedReader().use {
+            it.readText()
+        }
+        return ModuleResult("/vmodroot/$localPath", moduleString)
+    }
+
+    private fun tryPath(rawAssetPath: String): ModuleResult? {
+        val assetPath = Paths.get(rawAssetPath).normalize().toString()
+        try {
+            val moduleStream = assetManager.open(assetPath)
+            return makeResult(assetPath, moduleStream)
+        } catch (e: Exception) {
+        }
+        try {
+            val jsPath = "$assetPath.js"
+            val moduleStream = assetManager.open(jsPath)
+            return makeResult(jsPath, moduleStream)
+        } catch (e: Exception) {
+            // ignore
+        }
+        val packageJsonPath = "$assetPath/package.json"
+        try {
+            val packageStream = assetManager.open(packageJsonPath)
+            val packageString = packageStream.bufferedReader().use {
+                it.readText()
+            }
+            val packageJson = JSONObject(packageString)
+            val mainFile = try {
+                packageJson.getString("main")
+            } catch (e: Exception) {
+                Log.w(TAG, "package.json does not have a 'main' filed")
+                throw e
+            }
+            Log.i(TAG, "main field is $mainFile")
+            try {
+                val modPath = 
Paths.get("$assetPath/$mainFile").normalize().toString()
+                return makeResult(modPath, assetManager.open(modPath))
+            } catch (e: Exception) {
+                // ignore
+            }
+            try {
+                val modPath = 
Paths.get("$assetPath/$mainFile.js").normalize().toString()
+                return makeResult(modPath, assetManager.open(modPath))
+            } catch (e: Exception) {
+            }
+        } catch (e: Exception) {
+        }
+        try {
+            val jsPath = "$assetPath/index.js"
+            Log.i(TAG, "trying to open $jsPath")
+            val moduleStream = assetManager.open(jsPath)
+            return makeResult(jsPath, moduleStream)
+        } catch (e: Exception) {
+        }
+        return null
+    }
+
+    override fun loadModule(name: String, paths: Array<String>): ModuleResult? 
{
+        Log.i(TAG, "loading module $name from paths [${paths.fold("", { acc, s 
-> "$acc,$s" })}]")
+        for (path in paths) {
+            Log.i(TAG, "trying from path $path")
+            val prefix = "/vmodroot"
+            if (!path.startsWith(prefix)) {
+                continue
+            }
+            if (path == prefix) {
+                Log.i(TAG, "path is prefix")
+                val res = tryPath("$rootPath/$name")
+                if (res != null)
+                    return res
+            } else {
+                Log.i(TAG, "path is not prefix")
+                val res = tryPath(path.drop(prefix.length + 1) + "/$name")
+                if (res != null)
+                    return res
+            }
+        }
+        return null
+    }
+}
+
+
+class AssetDataHandler(private val assetManager: AssetManager) : 
AkonoJni.GetDataHandler {
+    override fun handleGetData(what: String): ByteArray? {
+        if (what == "taler-emscripten-lib.wasm") {
+            Log.i(TAG, "loading emscripten binary from taler-wallet")
+            val stream = 
assetManager.open("node_modules/taler-wallet/emscripten/taler-emscripten-lib.wasm")
+            val bytes: ByteArray = stream.readBytes()
+            Log.i(TAG, "size of emscripten binary: ${bytes.size}")
+            return bytes
+        } else {
+            Log.w(TAG, "data '$what' requested by akono not found")
+            return null
+        }
+    }
+}
+
+data class Amount(val currency: String, val amount: String) {
+    companion object {
+        val FRACTIONAL_BASE = 1e8;
+        fun fromJson(jsonAmount: JSONObject): Amount {
+            val amountCurrency = jsonAmount.getString("currency")
+            val amountValue = jsonAmount.getString("value")
+            val amountFraction = jsonAmount.getString("fraction")
+            val amountIntValue = Integer.parseInt(amountValue)
+            val amountIntFraction = Integer.parseInt(amountFraction)
+            return Amount(amountCurrency, (amountIntValue + amountIntFraction 
/ FRACTIONAL_BASE).toString())
+        }
+        fun fromString(strAmount: String): Amount {
+            val components = strAmount.split(":")
+            return Amount(components[0], components[1])
+        }
+    }
+}
+
+
+data class WalletBalances(val initialized: Boolean, val byCurrency: 
List<Amount>)
+
+data class ContractTerms(val summary: String, val amount: Amount)
+
+open class PayStatus {
+    class Loading : PayStatus()
+    data class Prepared(val contractTerms: ContractTerms, val proposalId: Int, 
val totalFees: Amount) : PayStatus()
+    data class InsufficientBalance(val contractTerms: ContractTerms) : 
PayStatus()
+    data class AlreadyPaid(val contractTerms: ContractTerms) : PayStatus()
+    data class Error(val error: String) : PayStatus()
+    class Success : PayStatus()
+}
+
+
+class WalletViewModel(val app: Application) : AndroidViewModel(app) {
+    private lateinit var myAkono: AkonoJni
+    private var initialized = false
+
+    private var withdrawInProgress: Int = 0
+
+    val balances: MutableLiveData<WalletBalances> = MutableLiveData()
+
+    val isBalanceLoading: MutableLiveData<Boolean> = MutableLiveData()
+
+    //val isProposalLoading: MutableLiveData<Boolean> = MutableLiveData()
+
+    val payStatus: MutableLiveData<PayStatus> = MutableLiveData()
+
+    init {
+        isBalanceLoading.value = false
+        balances.value = WalletBalances(false, listOf())
+    }
+
+    fun init() {
+        if (initialized) {
+            Log.e(TAG, "WalletViewModel already initialized")
+            return
+        }
+        val app = this.getApplication<Application>()
+        myAkono = AkonoJni()
+        myAkono.setLoadModuleHandler(AssetModuleLoader(app.assets))
+        myAkono.setGetDataHandler(AssetDataHandler(app.assets))
+        myAkono.setMessageHandler(object : AkonoJni.MessageHandler {
+            override fun handleMessage(messageStr: String) {
+                Log.v(TAG, "got back message: ${messageStr}")
+                val message = JSONObject(messageStr)
+                val type = message.getString("type")
+                when (type) {
+                    "notification" -> {
+                        getBalances()
+                    }
+                    "response" -> {
+                        val operation = message.getString("operation")
+                        Log.v(TAG, "got response for operation $operation")
+                        when (operation) {
+                            "withdrawTestkudos" -> {
+                                withdrawInProgress--
+                                if (withdrawInProgress == 0) {
+                                    isBalanceLoading.postValue(false)
+                                }
+                            }
+                            "getBalances" -> {
+                                val balanceList = mutableListOf<Amount>();
+                                val result = message.getJSONObject("result")
+                                val byCurrency = 
result.getJSONObject("byCurrency")
+                                val currencyList = 
byCurrency.keys().asSequence().toList().sorted()
+                                for (currency in currencyList) {
+                                    val jsonAmount = 
byCurrency.getJSONObject(currency).getJSONObject("available")
+                                    val amount = Amount.fromJson(jsonAmount)
+                                    balanceList.add(amount)
+                                }
+                                balances.postValue(WalletBalances(true, 
balanceList))
+                            }
+                            "preparePay" -> {
+                                Log.v(TAG, "got preparePay result")
+                                val result = message.getJSONObject("result")
+                                val status = result.getString("status")
+                                var contractTerms: ContractTerms? = null
+                                var proposalId: Int? = null
+                                var totalFees: Amount? = null
+                                if (result.has("proposalId")) {
+                                    proposalId = result.getInt("proposalId")
+                                }
+                                if (result.has("contractTerms")) {
+                                    val ctJson = 
result.getJSONObject("contractTerms")
+                                    val amount = 
Amount.fromString(ctJson.getString("amount"))
+                                    val summary = ctJson.getString("summary")
+                                    contractTerms = ContractTerms(summary, 
amount)
+                                }
+                                if (result.has("totalFees")) {
+                                    totalFees = 
Amount.fromJson(result.getJSONObject("totalFees"))
+                                }
+                                val res = when (status) {
+                                    "payment-possible" -> 
PayStatus.Prepared(contractTerms!!, proposalId!!, totalFees!!)
+                                    "paid" -> 
PayStatus.AlreadyPaid(contractTerms!!)
+                                    "insufficient-balance" -> 
PayStatus.InsufficientBalance(contractTerms!!)
+                                    "error" -> PayStatus.Error("got some 
error")
+                                    else -> PayStatus.Error("unkown status")
+                                }
+                                payStatus.postValue(res)
+                            }
+                            "confirmPay" -> {
+                                payStatus.postValue(PayStatus.Success())
+                            }
+                        }
+
+                    }
+                }
+            }
+        })
+
+        myAkono.evalNodeCode("console.log('hello world from taler 
wallet-android')")
+        myAkono.evalNodeCode("tw = require('taler-wallet');")
+        myAkono.evalNodeCode("tw.installAndroidWalletListener();")
+
+        sendInitMessage()
+
+        this.initialized = true
+    }
+
+    private fun sendInitMessage() {
+        val msg = JSONObject()
+        msg.put("operation", "init")
+        val args = JSONObject()
+        msg.put("args", args)
+        args.put("persistentStoragePath", "${app.filesDir}/talerwalletdb.json")
+
+        Log.v(TAG, "sending message ${msg}")
+
+        myAkono.sendMessage(msg.toString())
+    }
+
+    fun getBalances() {
+        if (!initialized) {
+            Log.e(TAG, "WalletViewModel not initialized")
+            return
+        }
+
+        val msg = JSONObject()
+        msg.put("operation", "getBalances")
+
+        myAkono.sendMessage(msg.toString())
+    }
+
+    fun withdrawTestkudos() {
+        if (!initialized) {
+            Log.e(TAG, "WalletViewModel not initialized")
+            return
+        }
+
+        withdrawInProgress++
+        this.isBalanceLoading.value = true
+
+        val msg = JSONObject()
+        msg.put("operation", "withdrawTestkudos")
+
+        myAkono.sendMessage(msg.toString())
+    }
+
+    fun preparePay(url: String) {
+        val msg = JSONObject()
+        msg.put("operation", "preparePay")
+
+        val args = JSONObject()
+        msg.put("args", args)
+        args.put("url", url)
+
+        myAkono.sendMessage(msg.toString())
+    }
+
+    fun confirmPay(proposalId: Int) {
+        val msg = JSONObject()
+        msg.put("operation", "confirmPay")
+
+        val args = JSONObject()
+        msg.put("args", args)
+        args.put("proposalId", proposalId)
+
+        myAkono.sendMessage(msg.toString())
+    }
+
+    fun dangerouslyReset() {
+        val msg = JSONObject()
+        msg.put("operation", "reset")
+
+        myAkono.sendMessage(msg.toString())
+
+        sendInitMessage()
+
+        isBalanceLoading.value = false
+        balances.value = WalletBalances(false, listOf())
+
+        getBalances()
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/res/drawable-v24/ic_launcher_foreground.xml 
b/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 0000000..6348baa
--- /dev/null
+++ b/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,34 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android";
+        xmlns:aapt="http://schemas.android.com/aapt";
+        android:width="108dp"
+        android:height="108dp"
+        android:viewportHeight="108"
+        android:viewportWidth="108">
+    <path
+            android:fillType="evenOdd"
+            android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 
70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
+            android:strokeColor="#00000000"
+            android:strokeWidth="1">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                    android:endX="78.5885"
+                    android:endY="90.9159"
+                    android:startX="48.7653"
+                    android:startY="61.0927"
+                    android:type="linear">
+                <item
+                        android:color="#44000000"
+                        android:offset="0.0"/>
+                <item
+                        android:color="#00000000"
+                        android:offset="1.0"/>
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+            android:fillColor="#FFFFFF"
+            android:fillType="nonZero"
+            android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 
76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 
36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 
50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 
63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 
72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 
65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C6 
[...]
+            android:strokeColor="#00000000"
+            android:strokeWidth="1"/>
+</vector>
diff --git a/app/src/main/res/drawable/ic_history_black_24dp.xml 
b/app/src/main/res/drawable/ic_history_black_24dp.xml
new file mode 100644
index 0000000..a61de1b
--- /dev/null
+++ b/app/src/main/res/drawable/ic_history_black_24dp.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android";
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M13,3c-4.97,0 -9,4.03 -9,9L1,12l3.89,3.89 
0.07,0.14L9,12L6,12c0,-3.87 3.13,-7 7,-7s7,3.13 7,7 -3.13,7 -7,7c-1.93,0 
-3.68,-0.79 -4.94,-2.06l-1.42,1.42C8.27,19.99 10.51,21 13,21c4.97,0 9,-4.03 
9,-9s-4.03,-9 -9,-9zM12,8v5l4.28,2.54 0.72,-1.21 -3.5,-2.08L13.5,8L12,8z"/>
+</vector>
diff --git a/app/src/main/res/drawable/ic_home_black_24dp.xml 
b/app/src/main/res/drawable/ic_home_black_24dp.xml
new file mode 100644
index 0000000..70fb291
--- /dev/null
+++ b/app/src/main/res/drawable/ic_home_black_24dp.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android";
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#FF000000"
+        android:pathData="M10,20v-6h4v6h5v-8h3L12,3 2,12h3v8z"/>
+</vector>
diff --git a/app/src/main/res/drawable/ic_launcher_background.xml 
b/app/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 0000000..a0ad202
--- /dev/null
+++ b/app/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector
+        xmlns:android="http://schemas.android.com/apk/res/android";
+        android:height="108dp"
+        android:width="108dp"
+        android:viewportHeight="108"
+        android:viewportWidth="108">
+    <path android:fillColor="#008577"
+          android:pathData="M0,0h108v108h-108z"/>
+    <path android:fillColor="#00000000" android:pathData="M9,0L9,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,0L19,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M29,0L29,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M39,0L39,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M49,0L49,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M59,0L59,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M69,0L69,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M79,0L79,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M89,0L89,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M99,0L99,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,9L108,9"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,19L108,19"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,29L108,29"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,39L108,39"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,49L108,49"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,59L108,59"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,69L108,69"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,79L108,79"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,89L108,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,99L108,99"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,29L89,29"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,39L89,39"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,49L89,49"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,59L89,59"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,69L89,69"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,79L89,79"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M29,19L29,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M39,19L39,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M49,19L49,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M59,19L59,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M69,19L69,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M79,19L79,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+</vector>
diff --git a/app/src/main/res/drawable/ic_menu_camera.xml 
b/app/src/main/res/drawable/ic_menu_camera.xml
new file mode 100644
index 0000000..41688d5
--- /dev/null
+++ b/app/src/main/res/drawable/ic_menu_camera.xml
@@ -0,0 +1,12 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android";
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+            android:fillColor="#FF000000"
+            android:pathData="M12,12m-3.2,0a3.2,3.2 0,1 1,6.4 0a3.2,3.2 0,1 
1,-6.4 0"/>
+    <path
+            android:fillColor="#FF000000"
+            android:pathData="M9,2L7.17,4H4c-1.1,0 -2,0.9 -2,2v12c0,1.1 0.9,2 
2,2h16c1.1,0 2,-0.9 2,-2V6c0,-1.1 -0.9,-2 -2,-2h-3.17L15,2H9zm3,15c-2.76,0 
-5,-2.24 -5,-5s2.24,-5 5,-5 5,2.24 5,5 -2.24,5 -5,5z"/>
+</vector>
diff --git a/app/src/main/res/drawable/ic_menu_gallery.xml 
b/app/src/main/res/drawable/ic_menu_gallery.xml
new file mode 100644
index 0000000..ff8ce52
--- /dev/null
+++ b/app/src/main/res/drawable/ic_menu_gallery.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android";
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+            android:fillColor="#FF000000"
+            android:pathData="M22,16V4c0,-1.1 -0.9,-2 -2,-2H8c-1.1,0 -2,0.9 
-2,2v12c0,1.1 0.9,2 2,2h12c1.1,0 2,-0.9 
2,-2zm-11,-4l2.03,2.71L16,11l4,5H8l3,-4zM2,6v14c0,1.1 0.9,2 2,2h14v-2H4V6H2z"/>
+</vector>
diff --git a/app/src/main/res/drawable/ic_menu_manage.xml 
b/app/src/main/res/drawable/ic_menu_manage.xml
new file mode 100644
index 0000000..a0e423c
--- /dev/null
+++ b/app/src/main/res/drawable/ic_menu_manage.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android";
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+            android:fillColor="#FF000000"
+            android:pathData="M22.7,19l-9.1,-9.1c0.9,-2.3 0.4,-5 -1.5,-6.9 
-2,-2 -5,-2.4 -7.4,-1.3L9,6 6,9 1.6,4.7C0.4,7.1 0.9,10.1 2.9,12.1c1.9,1.9 
4.6,2.4 6.9,1.5l9.1,9.1c0.4,0.4 1,0.4 1.4,0l2.3,-2.3c0.5,-0.4 0.5,-1.1 
0.1,-1.4z"/>
+</vector>
\ No newline at end of file
diff --git a/app/src/main/res/drawable/ic_menu_send.xml 
b/app/src/main/res/drawable/ic_menu_send.xml
new file mode 100644
index 0000000..9745066
--- /dev/null
+++ b/app/src/main/res/drawable/ic_menu_send.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android";
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+            android:fillColor="#FF000000"
+            android:pathData="M2.01,21L23,12 2.01,3 2,10l15,2 -15,2z"/>
+</vector>
diff --git a/app/src/main/res/drawable/ic_menu_share.xml 
b/app/src/main/res/drawable/ic_menu_share.xml
new file mode 100644
index 0000000..b3e39e2
--- /dev/null
+++ b/app/src/main/res/drawable/ic_menu_share.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android";
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+            android:fillColor="#FF000000"
+            android:pathData="M18,16.08c-0.76,0 -1.44,0.3 
-1.96,0.77L8.91,12.7c0.05,-0.23 0.09,-0.46 0.09,-0.7s-0.04,-0.47 
-0.09,-0.7l7.05,-4.11c0.54,0.5 1.25,0.81 2.04,0.81 1.66,0 3,-1.34 3,-3s-1.34,-3 
-3,-3 -3,1.34 -3,3c0,0.24 0.04,0.47 0.09,0.7L8.04,9.81C7.5,9.31 6.79,9 
6,9c-1.66,0 -3,1.34 -3,3s1.34,3 3,3c0.79,0 1.5,-0.31 
2.04,-0.81l7.12,4.16c-0.05,0.21 -0.08,0.43 -0.08,0.65 0,1.61 1.31,2.92 
2.92,2.92 1.61,0 2.92,-1.31 2.92,-2.92s-1.31,-2.92 -2.92,-2.92z"/>
+</vector>
diff --git a/app/src/main/res/drawable/ic_menu_slideshow.xml 
b/app/src/main/res/drawable/ic_menu_slideshow.xml
new file mode 100644
index 0000000..ae51e49
--- /dev/null
+++ b/app/src/main/res/drawable/ic_menu_slideshow.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android";
+        android:width="24dp"
+        android:height="24dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+            android:fillColor="#FF000000"
+            android:pathData="M4,6H2v14c0,1.1 0.9,2 
2,2h14v-2H4V6zm16,-4H8c-1.1,0 -2,0.9 -2,2v12c0,1.1 0.9,2 2,2h12c1.1,0 2,-0.9 
2,-2V4c0,-1.1 -0.9,-2 -2,-2zm-8,12.5v-9l6,4.5 -6,4.5z"/>
+</vector>
diff --git a/app/src/main/res/drawable/side_nav_bar.xml 
b/app/src/main/res/drawable/side_nav_bar.xml
new file mode 100644
index 0000000..a33798b
--- /dev/null
+++ b/app/src/main/res/drawable/side_nav_bar.xml
@@ -0,0 +1,9 @@
+<shape xmlns:android="http://schemas.android.com/apk/res/android";
+       android:shape="rectangle">
+    <gradient
+            android:angle="135"
+            android:centerColor="#009688"
+            android:endColor="#00695C"
+            android:startColor="#4DB6AC"
+            android:type="linear"/>
+</shape>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_main.xml 
b/app/src/main/res/layout/activity_main.xml
new file mode 100644
index 0000000..ac9a123
--- /dev/null
+++ b/app/src/main/res/layout/activity_main.xml
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.drawerlayout.widget.DrawerLayout
+        xmlns:android="http://schemas.android.com/apk/res/android";
+        xmlns:app="http://schemas.android.com/apk/res-auto";
+        xmlns:tools="http://schemas.android.com/tools";
+        android:id="@+id/drawer_layout"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:fitsSystemWindows="true"
+        tools:openDrawer="start">
+
+    <include
+            layout="@layout/app_bar_main"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"/>
+
+    <com.google.android.material.navigation.NavigationView
+            android:id="@+id/nav_view"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_gravity="start"
+            android:fitsSystemWindows="true"
+            app:headerLayout="@layout/nav_header_main"
+            app:menu="@menu/activity_main_drawer"/>
+
+</androidx.drawerlayout.widget.DrawerLayout>
diff --git a/app/src/main/res/layout/app_bar_main.xml 
b/app/src/main/res/layout/app_bar_main.xml
new file mode 100644
index 0000000..0e95cb0
--- /dev/null
+++ b/app/src/main/res/layout/app_bar_main.xml
@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.coordinatorlayout.widget.CoordinatorLayout
+        xmlns:android="http://schemas.android.com/apk/res/android";
+        xmlns:app="http://schemas.android.com/apk/res-auto";
+        xmlns:tools="http://schemas.android.com/tools";
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        tools:context=".MainActivity">
+
+
+    <com.google.android.material.appbar.AppBarLayout
+            android:layout_height="wrap_content"
+            android:layout_width="match_parent"
+            android:theme="@style/AppTheme.AppBarOverlay">
+
+        <RelativeLayout
+                android:layout_width="match_parent"
+                android:layout_height="?attr/actionBarSize">
+
+            <androidx.appcompat.widget.Toolbar
+                    android:id="@+id/toolbar"
+                    android:layout_width="match_parent"
+                    android:layout_height="?attr/actionBarSize"
+                    android:background="?attr/colorPrimary"
+                    app:popupTheme="@style/AppTheme.PopupOverlay"/>
+            <me.zhanghai.android.materialprogressbar.MaterialProgressBar
+                    android:id="@+id/progress_bar"
+                    android:layout_width="match_parent"
+                    android:layout_height="4dp"
+                    android:indeterminate="true"
+                    app:mpb_progressStyle="horizontal"
+                    app:mpb_useIntrinsicPadding="false"
+                    android:layout_alignParentBottom="true"
+                    
style="@style/Widget.MaterialProgressBar.ProgressBar.Horizontal"/>
+        </RelativeLayout>
+
+    </com.google.android.material.appbar.AppBarLayout>
+
+    <include layout="@layout/content_main" android:id="@+id/include"/>
+
+</androidx.coordinatorlayout.widget.CoordinatorLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/balance_row.xml 
b/app/src/main/res/layout/balance_row.xml
new file mode 100644
index 0000000..75f143c
--- /dev/null
+++ b/app/src/main/res/layout/balance_row.xml
@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android";
+              xmlns:tools="http://schemas.android.com/tools";
+              android:orientation="vertical"
+              android:layout_width="match_parent"
+              android:layout_height="wrap_content">
+
+    <LinearLayout android:layout_width="match_parent"
+                  android:layout_height="wrap_content"
+                  android:orientation="horizontal">
+
+        <TextView
+                  android:layout_width="wrap_content"
+                  android:layout_height="wrap_content"
+                  android:id="@+id/balance_amount"
+                  android:textSize="40sp" tools:text="100.50">
+        </TextView>
+
+        <Space android:layout_width="10sp"
+               android:layout_height="match_parent"/>
+
+        <TextView
+                  android:layout_width="wrap_content"
+                  android:layout_height="wrap_content"
+                  android:id="@+id/balance_currency"
+                  android:textSize="20sp" tools:text="TESTKUDOS">
+        </TextView>
+
+    </LinearLayout>
+
+</LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/content_main.xml 
b/app/src/main/res/layout/content_main.xml
new file mode 100644
index 0000000..112382e
--- /dev/null
+++ b/app/src/main/res/layout/content_main.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout
+        xmlns:android="http://schemas.android.com/apk/res/android";
+        xmlns:tools="http://schemas.android.com/tools";
+        xmlns:app="http://schemas.android.com/apk/res-auto";
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:layout_behavior="@string/appbar_scrolling_view_behavior"
+        tools:showIn="@layout/app_bar_main"
+        tools:context=".MainActivity">
+
+    <fragment
+            android:id="@+id/nav_host_fragment"
+            android:name="androidx.navigation.fragment.NavHostFragment"
+            android:layout_width="0dp"
+            android:layout_height="0dp"
+            app:layout_constraintLeft_toLeftOf="parent"
+            app:layout_constraintRight_toRightOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:defaultNavHost="true"
+            app:navGraph="@navigation/nav_graph" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_payment_successful.xml 
b/app/src/main/res/layout/fragment_payment_successful.xml
new file mode 100644
index 0000000..64ddad9
--- /dev/null
+++ b/app/src/main/res/layout/fragment_payment_successful.xml
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android";
+             xmlns:tools="http://schemas.android.com/tools";
+             android:layout_width="match_parent"
+             android:layout_height="match_parent"
+             android:layout_margin="15dp"
+             tools:context=".PaymentSuccessful">
+
+
+    <LinearLayout
+            android:orientation="vertical"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+
+        <Space android:layout_width="match_parent" android:layout_height="0dp"
+        android:layout_weight="1"/>
+
+        <TextView
+                android:layout_gravity="center"
+                android:layout_width="match_parent"
+                android:textAlignment="center"
+                android:layout_height="50dp"
+                android:text="Payment was Successful"
+                android:autoSizeTextType="uniform"
+                android:textColor="@android:color/holo_green_dark"/>
+
+
+        <Space android:layout_width="match_parent" android:layout_height="0dp"
+               android:layout_weight="1"/>
+        <Button
+                android:text="Go Back"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:id="@+id/button_success_back"/>
+
+    </LinearLayout>
+
+</FrameLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_prompt_payment.xml 
b/app/src/main/res/layout/fragment_prompt_payment.xml
new file mode 100644
index 0000000..8d01126
--- /dev/null
+++ b/app/src/main/res/layout/fragment_prompt_payment.xml
@@ -0,0 +1,114 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android";
+             xmlns:tools="http://schemas.android.com/tools";
+             android:layout_width="match_parent"
+             android:layout_height="match_parent"
+             android:layout_margin="15dp"
+             tools:context=".PromptPayment">
+
+
+    <LinearLayout
+            android:orientation="vertical"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:id="@+id/prompt_payment_details">
+
+        <Space android:layout_width="match_parent"
+               android:layout_height="15dp"
+               android:layout_weight="1"/>
+
+        <TextView
+                android:text="Order Summary"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center"
+                android:id="@+id/textView2"/>
+
+        <TextView
+                android:text="One Cappuccino"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:textSize="25sp"
+                android:layout_gravity="center"
+                android:id="@+id/order_summary"/>
+
+        <Space android:layout_width="match_parent"
+               android:layout_height="25dp"/>
+
+
+        <TextView
+                android:text="Amount"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center"
+                android:id="@+id/textView3"/>
+        <TextView
+                android:text="10 TESTKUDOS"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:textSize="25sp"
+                android:layout_gravity="center"
+                android:id="@+id/order_amount"/>
+
+        <LinearLayout android:layout_width="wrap_content"
+                      android:layout_height="wrap_content"
+                      android:orientation="horizontal"
+                      android:layout_gravity="center"
+                      android:id="@+id/order_fees_box">
+
+            <TextView
+                    android:text="(plus additional "
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_gravity="center"/>
+
+            <TextView
+                    android:text="0.5 TESTKUDOS"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_gravity="center"
+                    android:id="@+id/order_fees_amount"/>
+
+            <TextView
+                    android:text=" payment fees)"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:layout_gravity="center"
+                    />
+
+        </LinearLayout>
+
+        <Space android:layout_width="match_parent"
+               android:layout_height="15dp"
+               android:layout_weight="1"/>
+
+        <TextView
+                android:text="Balance Insufficient!"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:textSize="25sp"
+                android:layout_gravity="center"
+                android:id="@+id/balance_insufficient_warning" 
android:textColor="@android:color/holo_red_dark"/>
+
+
+        <Space android:layout_width="match_parent"
+               android:layout_height="15dp"
+               android:layout_weight="1"/>
+
+        <LinearLayout android:layout_width="match_parent"
+                      android:layout_height="wrap_content"
+                      android:orientation="horizontal">
+            <Button android:layout_width="wrap_content" 
android:layout_height="wrap_content"
+                    android:text="Abort Payment"
+                    android:id="@+id/button_abort_payment"/>
+
+            <Space android:layout_width="15dp" 
android:layout_height="match_parent"
+                   android:layout_weight="1"/>
+
+            <Button android:layout_width="wrap_content" 
android:layout_height="wrap_content"
+                    android:id="@+id/button_confirm_payment"
+                    android:text="Confirm Payment"/>
+        </LinearLayout>
+
+    </LinearLayout>
+</FrameLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_settings.xml 
b/app/src/main/res/layout/fragment_settings.xml
new file mode 100644
index 0000000..d675d98
--- /dev/null
+++ b/app/src/main/res/layout/fragment_settings.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android";
+             xmlns:tools="http://schemas.android.com/tools";
+             android:layout_width="match_parent"
+             android:layout_height="match_parent"
+             android:layout_margin="10dp"
+             tools:context=".Settings">
+
+    <LinearLayout
+            android:orientation="vertical"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+
+        <Button
+                android:text="Reset Wallet (Dangerous!)"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content" 
android:id="@+id/button_reset_wallet_dangerously"/>
+    </LinearLayout>
+</FrameLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/fragment_show_balance.xml 
b/app/src/main/res/layout/fragment_show_balance.xml
new file mode 100644
index 0000000..e4d2e81
--- /dev/null
+++ b/app/src/main/res/layout/fragment_show_balance.xml
@@ -0,0 +1,51 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.core.widget.NestedScrollView
+        xmlns:android="http://schemas.android.com/apk/res/android";
+        xmlns:tools="http://schemas.android.com/tools";
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_margin="15dp">
+
+    <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:orientation="vertical">
+
+        <View
+                android:id="@+id/header"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"/>
+
+        <androidx.recyclerview.widget.RecyclerView
+                android:id="@+id/list_balances"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:scrollbars="vertical"/>
+
+        <TextView
+                android:id="@+id/list_balances_placeholder"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="center"
+                android:text="There is no digital cash in your wallet."
+                tools:visibility="gone"/>
+
+        <Space android:layout_width="match_parent" 
android:layout_height="20dp"/>
+
+        <Button
+                android:text="Withdraw TESTKUDOS"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:id="@+id/button_withdraw_testkudos"/>
+        <Button
+                android:text="Pay via QR Code"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:id="@+id/button_pay_qr"/>
+        <Button
+                android:text="Pay via NFC"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:id="@+id/button_pay_nfc"/>
+    </LinearLayout>
+</androidx.core.widget.NestedScrollView>
diff --git a/app/src/main/res/layout/fragment_show_history.xml 
b/app/src/main/res/layout/fragment_show_history.xml
new file mode 100644
index 0000000..d730425
--- /dev/null
+++ b/app/src/main/res/layout/fragment_show_history.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android";
+             xmlns:tools="http://schemas.android.com/tools";
+             android:layout_width="match_parent"
+             android:layout_height="match_parent"
+             tools:context=".WalletHistory">
+
+    <TextView
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:text="The history of wallet operations will eventually be 
shown here.  Currently this feature isn't implemented, sorry!"/>
+
+</FrameLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/nav_header_main.xml 
b/app/src/main/res/layout/nav_header_main.xml
new file mode 100644
index 0000000..92ca611
--- /dev/null
+++ b/app/src/main/res/layout/nav_header_main.xml
@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+        xmlns:android="http://schemas.android.com/apk/res/android";
+        xmlns:app="http://schemas.android.com/apk/res-auto";
+        android:layout_width="match_parent"
+        android:layout_height="@dimen/nav_header_height"
+        android:background="@drawable/side_nav_bar"
+        android:paddingBottom="@dimen/activity_vertical_margin"
+        android:paddingLeft="@dimen/activity_horizontal_margin"
+        android:paddingRight="@dimen/activity_horizontal_margin"
+        android:paddingTop="@dimen/activity_vertical_margin"
+        android:theme="@style/ThemeOverlay.AppCompat.Dark"
+        android:orientation="vertical"
+        android:gravity="bottom">
+
+    <ImageView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:paddingTop="@dimen/nav_header_vertical_spacing"
+            app:srcCompat="@mipmap/ic_launcher_round"
+            android:contentDescription="@string/nav_header_desc"
+            android:id="@+id/imageView"/>
+
+    <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:paddingTop="@dimen/nav_header_vertical_spacing"
+            android:text="@string/nav_header_title"
+            android:textAppearance="@style/TextAppearance.AppCompat.Body1"/>
+
+    <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/nav_header_subtitle"
+            android:id="@+id/textView"/>
+
+</LinearLayout>
diff --git a/app/src/main/res/menu/activity_main_drawer.xml 
b/app/src/main/res/menu/activity_main_drawer.xml
new file mode 100644
index 0000000..14dc779
--- /dev/null
+++ b/app/src/main/res/menu/activity_main_drawer.xml
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android";
+      xmlns:tools="http://schemas.android.com/tools";
+      tools:showIn="navigation_view">
+
+    <group android:checkableBehavior="single">
+        <item
+                android:id="@+id/nav_home"
+                android:icon="@drawable/ic_home_black_24dp"
+                android:title="Home"/>
+        <item
+                android:id="@+id/nav_history"
+                android:icon="@drawable/ic_history_black_24dp"
+                android:title="History"/>
+        <item
+                android:id="@+id/nav_settings"
+                android:icon="@drawable/ic_menu_manage"
+                android:title="Settings"/>
+    </group>
+
+</menu>
diff --git a/app/src/main/res/menu/main.xml b/app/src/main/res/menu/main.xml
new file mode 100644
index 0000000..d579f6f
--- /dev/null
+++ b/app/src/main/res/menu/main.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android";
+      xmlns:app="http://schemas.android.com/apk/res-auto";>
+    <item android:id="@+id/action_settings"
+          android:title="@string/action_settings"
+          android:orderInCategory="100"
+          app:showAsAction="never"/>
+</menu>
diff --git a/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml 
b/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 0000000..bbd3e02
--- /dev/null
+++ b/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android";>
+    <background android:drawable="@drawable/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>
\ No newline at end of file
diff --git a/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml 
b/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 0000000..bbd3e02
--- /dev/null
+++ b/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android";>
+    <background android:drawable="@drawable/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>
\ No newline at end of file
diff --git a/app/src/main/res/mipmap-hdpi/ic_launcher.png 
b/app/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 0000000..898f3ed
Binary files /dev/null and b/app/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/app/src/main/res/mipmap-hdpi/ic_launcher_round.png 
b/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 0000000..dffca36
Binary files /dev/null and b/app/src/main/res/mipmap-hdpi/ic_launcher_round.png 
differ
diff --git a/app/src/main/res/mipmap-mdpi/ic_launcher.png 
b/app/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 0000000..64ba76f
Binary files /dev/null and b/app/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/app/src/main/res/mipmap-mdpi/ic_launcher_round.png 
b/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 0000000..dae5e08
Binary files /dev/null and b/app/src/main/res/mipmap-mdpi/ic_launcher_round.png 
differ
diff --git a/app/src/main/res/mipmap-xhdpi/ic_launcher.png 
b/app/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..e5ed465
Binary files /dev/null and b/app/src/main/res/mipmap-xhdpi/ic_launcher.png 
differ
diff --git a/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png 
b/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..14ed0af
Binary files /dev/null and 
b/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/app/src/main/res/mipmap-xxhdpi/ic_launcher.png 
b/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..b0907ca
Binary files /dev/null and b/app/src/main/res/mipmap-xxhdpi/ic_launcher.png 
differ
diff --git a/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png 
b/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..d8ae031
Binary files /dev/null and 
b/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png 
b/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 0000000..2c18de9
Binary files /dev/null and b/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png 
differ
diff --git a/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png 
b/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..beed3cd
Binary files /dev/null and 
b/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/app/src/main/res/navigation/nav_graph.xml 
b/app/src/main/res/navigation/nav_graph.xml
new file mode 100644
index 0000000..174c907
--- /dev/null
+++ b/app/src/main/res/navigation/nav_graph.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation xmlns:android="http://schemas.android.com/apk/res/android";
+            xmlns:app="http://schemas.android.com/apk/res-auto";
+            xmlns:tools="http://schemas.android.com/tools"; 
android:id="@+id/nav_graph"
+            app:startDestination="@id/showBalance">
+
+    <fragment android:id="@+id/showBalance" 
android:name="net.taler.wallet.ShowBalance"
+              android:label="Balances" 
tools:layout="@layout/fragment_show_balance">
+        <action android:id="@+id/action_showBalance_to_promptPayment" 
app:destination="@id/promptPayment"/>
+    </fragment>
+    <fragment android:id="@+id/promptPayment" 
android:name="net.taler.wallet.PromptPayment"
+              android:label="Review Payment" 
tools:layout="@layout/fragment_prompt_payment">
+        <action android:id="@+id/action_promptPayment_to_paymentSuccessful" 
app:destination="@id/paymentSuccessful"
+                app:popUpTo="@id/showBalance"/>
+    </fragment>
+    <fragment android:id="@+id/paymentSuccessful" 
android:name="net.taler.wallet.PaymentSuccessful"
+              android:label="Payment Successful" 
tools:layout="@layout/fragment_payment_successful"/>
+    <fragment android:id="@+id/settings" 
android:name="net.taler.wallet.Settings" android:label="Settings"
+              tools:layout="@layout/fragment_settings"/>
+    <fragment android:id="@+id/walletHistory" 
android:name="net.taler.wallet.WalletHistory"
+              android:label="History" 
tools:layout="@layout/fragment_show_history"/>
+</navigation>
\ No newline at end of file
diff --git a/app/src/main/res/values-v21/styles.xml 
b/app/src/main/res/values-v21/styles.xml
new file mode 100644
index 0000000..e546804
--- /dev/null
+++ b/app/src/main/res/values-v21/styles.xml
@@ -0,0 +1,7 @@
+<resources>
+    <style name="AppTheme.NoActionBar">
+        <item name="windowActionBar">false</item>
+        <item name="windowNoTitle">true</item>
+        <item name="android:statusBarColor">@android:color/transparent</item>
+    </style>
+</resources>
diff --git a/app/src/main/res/values/colors.xml 
b/app/src/main/res/values/colors.xml
new file mode 100644
index 0000000..69b2233
--- /dev/null
+++ b/app/src/main/res/values/colors.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#008577</color>
+    <color name="colorPrimaryDark">#00574B</color>
+    <color name="colorAccent">#D81B60</color>
+</resources>
diff --git a/app/src/main/res/values/dimens.xml 
b/app/src/main/res/values/dimens.xml
new file mode 100644
index 0000000..4ab4520
--- /dev/null
+++ b/app/src/main/res/values/dimens.xml
@@ -0,0 +1,8 @@
+<resources>
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+    <dimen name="nav_header_vertical_spacing">8dp</dimen>
+    <dimen name="nav_header_height">176dp</dimen>
+    <dimen name="fab_margin">16dp</dimen>
+</resources>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml 
b/app/src/main/res/values/strings.xml
new file mode 100644
index 0000000..f059311
--- /dev/null
+++ b/app/src/main/res/values/strings.xml
@@ -0,0 +1,19 @@
+<resources>
+    <string name="app_name">GNU Taler Wallet</string>
+    <string name="navigation_drawer_open">Open navigation drawer</string>
+    <string name="navigation_drawer_close">Close navigation drawer</string>
+    <string name="nav_header_title">GNU Taler</string>
+    <string name="nav_header_subtitle">Wallet</string>
+    <string name="nav_header_desc">Navigation header</string>
+    <string name="action_settings">Settings</string>
+
+    <string name="menu_home">Home</string>
+    <string name="menu_gallery">Gallery</string>
+    <string name="menu_slideshow">Slideshow</string>
+    <string name="menu_tools">Tools</string>
+    <string name="menu_share">Share</string>
+    <string name="menu_send">Send</string>
+
+    <!-- TODO: Remove or change this placeholder text -->
+    <string name="hello_blank_fragment">Hello blank fragment</string>
+</resources>
diff --git a/app/src/main/res/values/styles.xml 
b/app/src/main/res/values/styles.xml
new file mode 100644
index 0000000..16dbab3
--- /dev/null
+++ b/app/src/main/res/values/styles.xml
@@ -0,0 +1,17 @@
+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+        <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+        <item name="colorAccent">@color/colorAccent</item>
+    </style>
+    <style name="AppTheme.NoActionBar">
+        <item name="windowActionBar">false</item>
+        <item name="windowNoTitle">true</item>
+    </style>
+    <style name="AppTheme.AppBarOverlay" 
parent="ThemeOverlay.AppCompat.Dark.ActionBar"/>
+    <style name="AppTheme.PopupOverlay" parent="ThemeOverlay.AppCompat.Light"/>
+
+</resources>
diff --git a/app/src/test/java/net/taler/wallet/ExampleUnitTest.kt 
b/app/src/test/java/net/taler/wallet/ExampleUnitTest.kt
new file mode 100644
index 0000000..c01881a
--- /dev/null
+++ b/app/src/test/java/net/taler/wallet/ExampleUnitTest.kt
@@ -0,0 +1,17 @@
+package net.taler.wallet
+
+import org.junit.Test
+
+import org.junit.Assert.*
+
+/**
+ * Example local unit test, which will execute on the development machine 
(host).
+ *
+ * See [testing documentation](http://d.android.com/tools/testing).
+ */
+class ExampleUnitTest {
+    @Test
+    fun addition_isCorrect() {
+        assertEquals(4, 2 + 2)
+    }
+}
diff --git a/build.gradle b/build.gradle
new file mode 100644
index 0000000..438d280
--- /dev/null
+++ b/build.gradle
@@ -0,0 +1,28 @@
+// Top-level build file where you can add configuration options common to all 
sub-projects/modules.
+
+buildscript {
+    ext.kotlin_version = '1.3.41'
+    repositories {
+        google()
+        jcenter()
+        
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.4.2'
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        // NOTE: Do not place your application dependencies here; they belong
+        // in the individual module build.gradle files
+    }
+}
+
+allprojects {
+    repositories {
+        google()
+        jcenter()
+        
+    }
+}
+
+task clean(type: Delete) {
+    delete rootProject.buildDir
+}
diff --git a/gradle.properties b/gradle.properties
new file mode 100644
index 0000000..23339e0
--- /dev/null
+++ b/gradle.properties
@@ -0,0 +1,21 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx1536m
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# 
http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled 
with the
+# Android operating system, and which are packaged with your app's APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Automatically convert third-party libraries to use AndroidX
+android.enableJetifier=true
+# Kotlin code style for this project: "official" or "obsolete":
+kotlin.code.style=official
diff --git a/gradle/wrapper/gradle-wrapper.jar 
b/gradle/wrapper/gradle-wrapper.jar
new file mode 100644
index 0000000..f6b961f
Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ
diff --git a/gradle/wrapper/gradle-wrapper.properties 
b/gradle/wrapper/gradle-wrapper.properties
new file mode 100644
index 0000000..9664d9d
--- /dev/null
+++ b/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,6 @@
+#Wed Aug 14 17:39:00 CEST 2019
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-5.1.1-all.zip
diff --git a/gradlew b/gradlew
new file mode 100755
index 0000000..cccdd3d
--- /dev/null
+++ b/gradlew
@@ -0,0 +1,172 @@
+#!/usr/bin/env sh
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to 
pass JVM options to this script.
+DEFAULT_JVM_OPTS=""
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 
'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; 
then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" 
\"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin, switch paths to Windows format before running java
+if $cygwin ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### 
Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### 
Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=$((i+1))
+    done
+    case $i in
+        (0) set -- ;;
+        (1) set -- "$args0" ;;
+        (2) set -- "$args0" "$args1" ;;
+        (3) set -- "$args0" "$args1" "$args2" ;;
+        (4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        (5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        (6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        (7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" 
"$args6" ;;
+        (8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" 
"$args6" "$args7" ;;
+        (9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" 
"$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; 
done
+    echo " "
+}
+APP_ARGS=$(save "$@")
+
+# Collect all arguments for the java command, following the shell quoting and 
substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS 
"\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" 
org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+# by default we should be in the correct project dir, but when run from Finder 
on Mac, the cwd is wrong
+if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
+  cd "$(dirname "$0")"
+fi
+
+exec "$JAVACMD" "$@"
diff --git a/gradlew.bat b/gradlew.bat
new file mode 100644
index 0000000..e95643d
--- /dev/null
+++ b/gradlew.bat
@@ -0,0 +1,84 @@
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS 
to pass JVM options to this script.
+set DEFAULT_JVM_OPTS=
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto init
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your 
PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto init
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:init
+@rem Get command-line arguments, handling Windows variants
+
+if not "%OS%" == "Windows_NT" goto win9xME_args
+
+:win9xME_args
+@rem Slurp the command line arguments.
+set CMD_LINE_ARGS=
+set _SKIP=2
+
+:win9xME_args_slurp
+if "x%~1" == "x" goto execute
+
+set CMD_LINE_ARGS=%*
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% 
"-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" 
org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code 
instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega
diff --git a/settings.gradle b/settings.gradle
new file mode 100644
index 0000000..c34479d
--- /dev/null
+++ b/settings.gradle
@@ -0,0 +1 @@
+include ':app', ':akono'

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