Sample app compiles and runs.

So far this just demonstrates adding an Android Library project that uses Rust through the JNI. The next step would be to get protobufs working across the JNI boundary.
2018-10-09 00:27:16 -04:00 · 2018-10-09 00:27:16 -04:00 · 29c47c08fb
parent 9673f8f9a9
commit 29c47c08fb
56 changed files with 1178 additions and 13 deletions
--- a/.gitignore
+++ b/.gitignore
@ -2,6 +2,10 @@
 *.apk
 *.ap_

+# Built libraries
+*.aar
+# *.so
+
 # Files for the ART/Dalvik VM
 *.dex

@ -12,6 +16,7 @@
 bin/
 gen/
 out/
+target/

 # Gradle files
 .gradle/
@ -19,6 +24,7 @@ build/

 # Local configuration file (sdk path, etc)
 local.properties
+.DS_Store

 # Proguard folder generated by Eclipse
 proguard/
@ -34,17 +40,10 @@ captures/

 # IntelliJ
 *.iml
-.idea/workspace.xml
-.idea/tasks.xml
-.idea/gradle.xml
-.idea/assetWizardSettings.xml
-.idea/dictionaries
-.idea/libraries
-.idea/caches
+.idea

 # Keystore files
-# Uncomment the following line if you do not want to check your keystore files in.
-#*.jks
+*.jks

 # External native build folder generated in Android Studio 2.2 and later
 .externalNativeBuild
--- a/zcash-android-wallet-app/README.md
+++ b/zcash-android-wallet-app/README.md
@ -1,2 +0,0 @@
-# Wallet App
-Proof of concept for a zcash wallet. The Android app will leverage the SDK.
--- a/zcash-android-wallet-app/app/.gitignore
+++ b/zcash-android-wallet-app/app/.gitignore
@ -0,0 +1 @@
+/build
--- a/zcash-android-wallet-app/app/build.gradle
+++ b/zcash-android-wallet-app/app/build.gradle
@ -0,0 +1,41 @@
+apply plugin: 'com.android.application'
+
+apply plugin: 'kotlin-android'
+
+apply plugin: 'kotlin-android-extensions'
+
+android {
+    compileSdkVersion 28
+    buildToolsVersion "28.0.3"
+    defaultConfig {
+        applicationId "cash.z.wallet.app"
+        minSdkVersion 21
+        targetSdkVersion 28
+        versionCode 1
+        versionName "1.0"
+        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
+    }
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+}
+
+dependencies {
+    implementation project(":sdk")
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+    implementation"org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+    implementation 'androidx.appcompat:appcompat:1.0.0-beta01'
+    implementation 'android.arch.navigation:navigation-fragment:1.0.0-alpha06'
+    implementation 'android.arch.navigation:navigation-ui:1.0.0-alpha06'
+    implementation 'android.arch.navigation:navigation-fragment-ktx:1.0.0-alpha06'
+    implementation 'android.arch.navigation:navigation-ui-ktx:1.0.0-alpha06'
+    implementation 'androidx.core:core-ktx:1.0.0'
+    implementation 'com.google.android.material:material:1.0.0-beta01'
+    implementation 'androidx.constraintlayout:constraintlayout:1.1.2'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'androidx.test:runner:1.1.0-alpha4'
+    androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0-alpha4'
+}
--- a/zcash-android-wallet-app/app/proguard-rules.pro
+++ b/zcash-android-wallet-app/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
--- a/zcash-android-wallet-app/app/src/androidTest/java/cash/z/wallet/app/ExampleInstrumentedTest.kt
+++ b/zcash-android-wallet-app/app/src/androidTest/java/cash/z/wallet/app/ExampleInstrumentedTest.kt
@ -0,0 +1,24 @@
+package cash.z.wallet.app
+
+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("cash.z.wallet.app", appContext.packageName)
+    }
+}
--- a/zcash-android-wallet-app/app/src/main/AndroidManifest.xml
+++ b/zcash-android-wallet-app/app/src/main/AndroidManifest.xml
@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          xmlns:dist="http://schemas.android.com/apk/distribution"
+          package="cash.z.wallet.app">
+
+    <dist:module dist:instant="true"/>
+
+    <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">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN"/>
+
+                <category android:name="android.intent.category.LAUNCHER"/>
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>
--- a/zcash-android-wallet-app/app/src/main/java/cash/z/wallet/app/MainActivity.kt
+++ b/zcash-android-wallet-app/app/src/main/java/cash/z/wallet/app/MainActivity.kt
@ -0,0 +1,48 @@
+package cash.z.wallet.app
+
+import android.os.Bundle
+import androidx.appcompat.app.AppCompatActivity
+import cash.z.wallet.sdk.jni.JniConverter
+import com.google.android.material.bottomnavigation.BottomNavigationView
+import kotlinx.android.synthetic.main.activity_main.*
+
+class MainActivity : AppCompatActivity() {
+
+    var converter: JniConverter = JniConverter()
+
+    private val mOnNavigationItemSelectedListener = BottomNavigationView.OnNavigationItemSelectedListener { item ->
+        when (item.itemId) {
+            R.id.navigation_send -> {
+                message.setText(R.string.title_send)
+                return@OnNavigationItemSelectedListener true
+            }
+            R.id.navigation_receive -> {
+                message.setText(R.string.title_recieve)
+                return@OnNavigationItemSelectedListener true
+            }
+            R.id.navigation_invoice -> {
+                val homeText = "${getString(R.string.title_invoice)}\n${getString(R.string.sdk_test_message)}\n${checkJni()}"
+                message.setText(homeText)
+                return@OnNavigationItemSelectedListener true
+            }
+        }
+        false
+    }
+
+    private fun checkJni(): String {
+        try {
+            return when(converter.getMagicInt("forty-two")) {
+                42 -> "Rust lib is connected!"
+                else -> "JNI call returned unexpected value"
+            }
+        } catch (t: Throwable) {}
+        return "Failure reading from JNI"
+    }
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+
+        navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener)
+    }
+}
--- a/zcash-android-wallet-app/app/src/main/res/drawable-v24/ic_launcher_foreground.xml
+++ b/zcash-android-wallet-app/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:viewportWidth="108"
+        android:viewportHeight="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:strokeWidth="1"
+        android:strokeColor="#00000000">
+        <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 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000"/>
+</vector>
--- a/zcash-android-wallet-app/app/src/main/res/drawable/ic_launcher_background.xml
+++ b/zcash-android-wallet-app/app/src/main/res/drawable/ic_launcher_background.xml
@ -0,0 +1,171 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#008577"
+        android:pathData="M0,0h108v108h-108z"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF"/>
+</vector>
--- a/zcash-android-wallet-app/app/src/main/res/drawable/ic_qrcode_black_24dp.xml
+++ b/zcash-android-wallet-app/app/src/main/res/drawable/ic_qrcode_black_24dp.xml
@ -0,0 +1,10 @@
+<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="M3,11H5V13H3V11M11,5H13V9H11V5M9,11H13V15H11V13H9V11M15,11H17V13H19V11H21V13H19V15H21V19H19V21H17V19H13V21H11V17H15V15H17V13H15V11M19,19V15H17V19H19M15,3H21V9H15V3M17,5V7H19V5H17M3,3H9V9H3V3M5,5V7H7V5H5M3,15H9V21H3V15M5,17V19H7V17H5Z"/>
+</vector>
--- a/zcash-android-wallet-app/app/src/main/res/drawable/ic_receipt_black_24dp.xml
+++ b/zcash-android-wallet-app/app/src/main/res/drawable/ic_receipt_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="M18,17L6,17v-2h12v2zM18,13L6,13v-2h12v2zM18,9L6,9L6,7h12v2zM3,22l1.5,-1.5L6,22l1.5,-1.5L9,22l1.5,-1.5L12,22l1.5,-1.5L15,22l1.5,-1.5L18,22l1.5,-1.5L21,22L21,2l-1.5,1.5L18,2l-1.5,1.5L15,2l-1.5,1.5L12,2l-1.5,1.5L9,2 7.5,3.5 6,2 4.5,3.5 3,2v20z"/>
+</vector>
--- a/zcash-android-wallet-app/app/src/main/res/drawable/ic_send_black_24dp.xml
+++ b/zcash-android-wallet-app/app/src/main/res/drawable/ic_send_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="M2.01,21L23,12 2.01,3 2,10l15,2 -15,2z"/>
+</vector>
--- a/zcash-android-wallet-app/app/src/main/res/layout/activity_main.xml
+++ b/zcash-android-wallet-app/app/src/main/res/layout/activity_main.xml
@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout
+    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/container"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <TextView
+        android:id="@+id/message"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="@dimen/activity_horizontal_margin"
+        android:layout_marginLeft="@dimen/activity_horizontal_margin"
+        android:layout_marginTop="@dimen/activity_vertical_margin"
+        android:text="@string/title_send"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintTop_toTopOf="parent"/>
+
+    <com.google.android.material.bottomnavigation.BottomNavigationView
+        android:id="@+id/navigation"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="0dp"
+        android:layout_marginEnd="0dp"
+        android:background="?android:attr/windowBackground"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintLeft_toLeftOf="parent"
+        app:layout_constraintRight_toRightOf="parent"
+        app:menu="@menu/navigation"/>
+
+</androidx.constraintlayout.widget.ConstraintLayout>
--- a/zcash-android-wallet-app/app/src/main/res/menu/navigation.xml
+++ b/zcash-android-wallet-app/app/src/main/res/menu/navigation.xml
@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item
+        android:id="@+id/navigation_send"
+        android:icon="@drawable/ic_send_black_24dp"
+        android:title="@string/title_send"/>
+
+    <item
+        android:id="@+id/navigation_receive"
+        android:icon="@drawable/ic_qrcode_black_24dp"
+        android:title="@string/title_recieve"/>
+
+    <item
+        android:id="@+id/navigation_invoice"
+        android:icon="@drawable/ic_receipt_black_24dp"
+        android:title="@string/title_invoice"/>
+
+</menu>
--- a/zcash-android-wallet-app/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
+++ b/zcash-android-wallet-app/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>
--- a/zcash-android-wallet-app/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
+++ b/zcash-android-wallet-app/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>
--- a/zcash-android-wallet-app/app/src/main/res/mipmap-hdpi/ic_launcher.png
+++ b/zcash-android-wallet-app/app/src/main/res/mipmap-hdpi/ic_launcher.png
--- a/zcash-android-wallet-app/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
+++ b/zcash-android-wallet-app/app/src/main/res/mipmap-hdpi/ic_launcher_round.png
--- a/zcash-android-wallet-app/app/src/main/res/mipmap-mdpi/ic_launcher.png
+++ b/zcash-android-wallet-app/app/src/main/res/mipmap-mdpi/ic_launcher.png
--- a/zcash-android-wallet-app/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
+++ b/zcash-android-wallet-app/app/src/main/res/mipmap-mdpi/ic_launcher_round.png
--- a/zcash-android-wallet-app/app/src/main/res/mipmap-xhdpi/ic_launcher.png
+++ b/zcash-android-wallet-app/app/src/main/res/mipmap-xhdpi/ic_launcher.png
--- a/zcash-android-wallet-app/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
+++ b/zcash-android-wallet-app/app/src/main/res/mipmap-xhdpi/ic_launcher_round.png
--- a/zcash-android-wallet-app/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
+++ b/zcash-android-wallet-app/app/src/main/res/mipmap-xxhdpi/ic_launcher.png
--- a/zcash-android-wallet-app/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
+++ b/zcash-android-wallet-app/app/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
--- a/zcash-android-wallet-app/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
+++ b/zcash-android-wallet-app/app/src/main/res/mipmap-xxxhdpi/ic_launcher.png
--- a/zcash-android-wallet-app/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
+++ b/zcash-android-wallet-app/app/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
--- a/zcash-android-wallet-app/app/src/main/res/navigation/mobile_navigation.xml
+++ b/zcash-android-wallet-app/app/src/main/res/navigation/mobile_navigation.xml
@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<navigation xmlns:android="http://schemas.android.com/apk/res/android"
+            android:id="@+id/mobile_navigation">
+
+</navigation>
--- a/zcash-android-wallet-app/app/src/main/res/values/colors.xml
+++ b/zcash-android-wallet-app/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>
--- a/zcash-android-wallet-app/app/src/main/res/values/dimens.xml
+++ b/zcash-android-wallet-app/app/src/main/res/values/dimens.xml
@ -0,0 +1,5 @@
+<resources>
+    <!-- Default screen margins, per the Android Design guidelines. -->
+    <dimen name="activity_horizontal_margin">16dp</dimen>
+    <dimen name="activity_vertical_margin">16dp</dimen>
+</resources>
--- a/zcash-android-wallet-app/app/src/main/res/values/strings.xml
+++ b/zcash-android-wallet-app/app/src/main/res/values/strings.xml
@ -0,0 +1,6 @@
+<resources>
+    <string name="app_name">Zcash Wallet</string>
+    <string name="title_send">Send</string>
+    <string name="title_recieve">Recieve</string>
+    <string name="title_invoice">Invoice</string>
+</resources>
--- a/zcash-android-wallet-app/app/src/main/res/values/styles.xml
+++ b/zcash-android-wallet-app/app/src/main/res/values/styles.xml
@ -0,0 +1,11 @@
+<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>
+
+</resources>
--- a/zcash-android-wallet-app/app/src/test/java/cash/z/wallet/app/ExampleUnitTest.kt
+++ b/zcash-android-wallet-app/app/src/test/java/cash/z/wallet/app/ExampleUnitTest.kt
@ -0,0 +1,17 @@
+package cash.z.wallet.app
+
+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)
+    }
+}
--- a/zcash-android-wallet-app/build.gradle
+++ b/zcash-android-wallet-app/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 = '1.2.71'
+    repositories {
+        google()
+        jcenter()
+        
+    }
+    dependencies {
+        classpath 'com.android.tools.build:gradle:3.3.0-alpha12'
+        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
+}
--- a/zcash-android-wallet-app/gradle.properties
+++ b/zcash-android-wallet-app/gradle.properties
@ -0,0 +1,19 @@
+# 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
--- a/zcash-android-wallet-app/gradle/wrapper/gradle-wrapper.jar
+++ b/zcash-android-wallet-app/gradle/wrapper/gradle-wrapper.jar
--- a/zcash-android-wallet-app/gradle/wrapper/gradle-wrapper.properties
+++ b/zcash-android-wallet-app/gradle/wrapper/gradle-wrapper.properties
@ -0,0 +1,6 @@
+#Mon Oct 08 16:02:00 EDT 2018
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.10.1-all.zip
--- a/zcash-android-wallet-app/gradlew
+++ b/zcash-android-wallet-app/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" "$@"
--- a/zcash-android-wallet-app/gradlew.bat
+++ b/zcash-android-wallet-app/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
--- a/zcash-android-wallet-app/sdk
+++ b/zcash-android-wallet-app/sdk
@ -0,0 +1 @@
+../zcash-android-wallet-sdk-poc
--- a/zcash-android-wallet-app/settings.gradle
+++ b/zcash-android-wallet-app/settings.gradle
@ -0,0 +1 @@
+include ':app', ':sdk'
--- a/zcash-android-wallet-sdk-poc/build.gradle
+++ b/zcash-android-wallet-sdk-poc/build.gradle
@ -0,0 +1,40 @@
+apply plugin: 'com.android.library'
+apply plugin: 'kotlin-android-extensions'
+apply plugin: 'kotlin-android'
+
+android {
+    compileSdkVersion 28
+    buildToolsVersion "28.0.3"
+
+
+    defaultConfig {
+        minSdkVersion 16
+        targetSdkVersion 28
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+
+    }
+
+    buildTypes {
+        release {
+            minifyEnabled false
+            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
+        }
+    }
+
+}
+
+dependencies {
+    implementation fileTree(dir: 'libs', include: ['*.jar'])
+
+    implementation 'com.android.support:appcompat-v7:28.0.0'
+    testImplementation 'junit:junit:4.12'
+    androidTestImplementation 'com.android.support.test:runner:1.0.2'
+    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
+    compile "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
+}
+repositories {
+    mavenCentral()
+}
--- a/zcash-android-wallet-sdk-poc/proguard-rules.pro
+++ b/zcash-android-wallet-sdk-poc/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
--- a/zcash-android-wallet-sdk-poc/src/androidTest/java/cash/z/wallet/sdk/ExampleInstrumentedTest.java
+++ b/zcash-android-wallet-sdk-poc/src/androidTest/java/cash/z/wallet/sdk/ExampleInstrumentedTest.java
@ -0,0 +1,26 @@
+package cash.z.wallet.sdk;
+
+import android.content.Context;
+import android.support.test.InstrumentationRegistry;
+import android.support.test.runner.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+	@Test
+	public void useAppContext() {
+		// Context of the app under test.
+		Context appContext = InstrumentationRegistry.getTargetContext();
+
+		assertEquals("cash.z.wallet.sdk.test", appContext.getPackageName());
+	}
+}
--- a/zcash-android-wallet-sdk-poc/src/main/AndroidManifest.xml
+++ b/zcash-android-wallet-sdk-poc/src/main/AndroidManifest.xml
@ -0,0 +1,2 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+          package="cash.z.wallet.sdk"/>
--- a/zcash-android-wallet-sdk-poc/src/main/java/cash/z/wallet/sdk/jni/JniConverter.kt
+++ b/zcash-android-wallet-sdk-poc/src/main/java/cash/z/wallet/sdk/jni/JniConverter.kt
@ -0,0 +1,13 @@
+package cash.z.wallet.sdk.jni
+
+class JniConverter {
+
+    external fun getMagicInt(value: String): Int
+
+    companion object {
+        init {
+            System.loadLibrary("zcashwalletsdk")
+        }
+    }
+
+}
--- a/zcash-android-wallet-sdk-poc/src/main/jniLibs/arm64-v8a/libzcashwalletsdk.so
+++ b/zcash-android-wallet-sdk-poc/src/main/jniLibs/arm64-v8a/libzcashwalletsdk.so
@ -0,0 +1 @@
+../../rust/target/aarch64-linux-android/release/libzcashwalletsdk.so
--- a/zcash-android-wallet-sdk-poc/src/main/jniLibs/armeabi-v7a/libzcashwalletsdk.so
+++ b/zcash-android-wallet-sdk-poc/src/main/jniLibs/armeabi-v7a/libzcashwalletsdk.so
@ -0,0 +1 @@
+../../rust/target/armv7-linux-androideabi/release/libzcashwalletsdk.so
--- a/zcash-android-wallet-sdk-poc/src/main/jniLibs/x86/libzcashwalletsdk.so
+++ b/zcash-android-wallet-sdk-poc/src/main/jniLibs/x86/libzcashwalletsdk.so
@ -0,0 +1 @@
+../../rust/target/i686-linux-android/release/libzcashwalletsdk.so
--- a/zcash-android-wallet-sdk-poc/src/main/res/values/strings.xml
+++ b/zcash-android-wallet-sdk-poc/src/main/res/values/strings.xml
@ -0,0 +1,3 @@
+<resources>
+    <string name="sdk_test_message">Library linking is working!</string>
+</resources>
--- a/zcash-android-wallet-sdk-poc/src/main/rust/Cargo.lock
+++ b/zcash-android-wallet-sdk-poc/src/main/rust/Cargo.lock
@ -0,0 +1,177 @@
+[[package]]
+name = "ascii"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "bitflags"
+version = "1.0.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "byteorder"
+version = "1.2.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "cesu8"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "cfg-if"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "combine"
+version = "2.5.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "ascii 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
+ "byteorder 1.2.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "error-chain"
+version = "0.11.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "fuchsia-zircon"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "fuchsia-zircon-sys"
+version = "0.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "jni"
+version = "0.9.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cesu8 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "combine 2.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
+ "error-chain 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "jni-sys 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)",
+ "walkdir 2.2.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "jni-sys"
+version = "0.3.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "libc"
+version = "0.2.43"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "log"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "log 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "log"
+version = "0.4.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "rand"
+version = "0.4.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "same-file"
+version = "1.0.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "walkdir"
+version = "2.2.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "same-file 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "winapi"
+version = "0.3.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "winapi-util"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+
+[[package]]
+name = "zcash-wallet-sdk-poc"
+version = "0.0.1"
+dependencies = [
+ "jni 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
+[metadata]
+"checksum ascii 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "3ae7d751998c189c1d4468cf0a39bb2eae052a9c58d50ebb3b9591ee3813ad50"
+"checksum bitflags 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "228047a76f468627ca71776ecdebd732a3423081fcf5125585bcd7c49886ce12"
+"checksum byteorder 1.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "90492c5858dd7d2e78691cfb89f90d273a2800fc11d98f60786e5d87e2f83781"
+"checksum cesu8 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6d43a04d8753f35258c91f8ec639f792891f748a1edbd759cf1dcea3382ad83c"
+"checksum cfg-if 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "0c4e7bb64a8ebb0d856483e1e682ea3422f883c5f5615a90d51a2c82fe87fdd3"
+"checksum combine 2.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "1645a65a99c7c8d345761f4b75a6ffe5be3b3b27a93ee731fccc5050ba6be97c"
+"checksum error-chain 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ff511d5dc435d703f4971bc399647c9bc38e20cb41452e3b9feb4765419ed3f3"
+"checksum fuchsia-zircon 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2e9763c69ebaae630ba35f74888db465e49e259ba1bc0eda7d06f4a067615d82"
+"checksum fuchsia-zircon-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3dcaa9ae7725d12cdb85b3ad99a434db70b468c09ded17e012d86b5c1010f7a7"
+"checksum jni 0.9.3 (registry+https://github.com/rust-lang/crates.io-index)" = "ef6a7c128e004695664548814f96ea78b458d94e52eb88c42a3b1d4e9a14ac1e"
+"checksum jni-sys 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8eaf4bc02d17cbdd7ff4c7438cafcdf7fb9a4613313ad11b4f8fefe7d3fa0130"
+"checksum libc 0.2.43 (registry+https://github.com/rust-lang/crates.io-index)" = "76e3a3ef172f1a0b9a9ff0dd1491ae5e6c948b94479a3021819ba7d860c8645d"
+"checksum log 0.3.9 (registry+https://github.com/rust-lang/crates.io-index)" = "e19e8d5c34a3e0e2223db8e060f9e8264aeeb5c5fc64a4ee9965c062211c024b"
+"checksum log 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)" = "d4fcce5fa49cc693c312001daf1d13411c4a5283796bac1084299ea3e567113f"
+"checksum rand 0.4.3 (registry+https://github.com/rust-lang/crates.io-index)" = "8356f47b32624fef5b3301c1be97e5944ecdd595409cc5da11d05f211db6cfbd"
+"checksum same-file 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "10f7794e2fda7f594866840e95f5c5962e886e228e68b6505885811a94dd728c"
+"checksum walkdir 2.2.5 (registry+https://github.com/rust-lang/crates.io-index)" = "af464bc7be7b785c7ac72e266a6b67c4c9070155606f51655a650a6686204e35"
+"checksum winapi 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "92c1eb33641e276cfa214a0522acad57be5c56b10cb348b3c5117db75f3ac4b0"
+"checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+"checksum winapi-util 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "afc5508759c5bf4285e61feb862b6083c8480aec864fa17a81fdec6f69b461ab"
+"checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
--- a/zcash-android-wallet-sdk-poc/src/main/rust/Cargo.toml
+++ b/zcash-android-wallet-sdk-poc/src/main/rust/Cargo.toml
@ -0,0 +1,17 @@
+[package]
+name = "zcash-wallet-sdk-poc"
+version = "0.0.1"
+authors = ["Kevin Gorham <kevin.gorham@z.cash>"]
+description = "Simple PoC that rust can work with protobufs over JNO"
+publish = false
+
+[dependencies]
+rand = "0.4"
+
+[target.'cfg(target_os="android")'.dependencies]
+jni = { version = "0.9", default-features = false }
+
+[lib]
+name = "zcashwalletsdk"
+path = "zcash/jni/lib.rs"
+crate-type = ["staticlib", "cdylib"]
--- a/zcash-android-wallet-sdk-poc/src/main/rust/build.sh
+++ b/zcash-android-wallet-sdk-poc/src/main/rust/build.sh
@ -0,0 +1,3 @@
+cargo build --target aarch64-linux-android --release
+cargo build --target i686-linux-android --release
+cargo build --target armv7-linux-androideabi --release
--- a/zcash-android-wallet-sdk-poc/src/main/rust/zcash/jni/lib.rs
+++ b/zcash-android-wallet-sdk-poc/src/main/rust/zcash/jni/lib.rs
@ -0,0 +1,30 @@
+use std::os::raw::{c_char, c_int};
+
+/// For now, this just returns a magic number
+#[no_mangle]
+pub extern "C" fn test_response(input: *const c_char) -> c_int {
+    let magic_number = 42;
+    magic_number
+}
+
+
+/// JNI interface
+#[cfg(target_os="android")]
+#[allow(non_snake_case)]
+pub mod android {
+    extern crate jni;
+
+    use super::*;
+    use self::jni::JNIEnv;
+    use self::jni::objects::{JClass, JString};
+    use self::jni::sys::{jint, jlong};
+
+    #[no_mangle]
+    pub unsafe extern "C" fn Java_cash_z_wallet_sdk_jni_JniConverter_getMagicInt(env: JNIEnv, _: JClass, test_input: JString) -> jint {
+        let jvm_text = env.get_string(test_input).expect("unable to find text for test input");
+        test_response(jvm_text.as_ptr())
+    }
+}
+
+
+
--- a/zcash-android-wallet-sdk-poc/src/test/java/cash/z/wallet/sdk/ExampleUnitTest.java
+++ b/zcash-android-wallet-sdk-poc/src/test/java/cash/z/wallet/sdk/ExampleUnitTest.java
@ -0,0 +1,17 @@
+package cash.z.wallet.sdk;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+	@Test
+	public void addition_isCorrect() {
+		assertEquals(4, 2 + 2);
+	}
+}
--- a/zcash-android-wallet-sdk/README.md
+++ b/zcash-android-wallet-sdk/README.md
@ -1,2 +0,0 @@
-# Wallet SDK
-Proof of concept for an SDK to support the Android wallet app.
				`@ -0,0 +1 @@`
				`../../rust/target/aarch64-linux-android/release/libzcashwalletsdk.so`
				`@ -0,0 +1 @@`
				`../../rust/target/armv7-linux-androideabi/release/libzcashwalletsdk.so`
				`@ -0,0 +1 @@`
				`../../rust/target/i686-linux-android/release/libzcashwalletsdk.so`