Added buildSrc/Dependencies.kt resulting in better readable build.gradles. Incorporated libraries required from SDK Demo App.

app/build.gradle

@@ -1,18 +1,22 @@
 // Copyright 2019-2020 The Hush developers
 // Released under the GPLv3
+import org.myhush.silentdragon.Deps
 
 apply plugin: 'com.android.application'
 apply plugin: 'kotlin-android'
 apply plugin: 'kotlin-android-extensions'
+apply plugin: 'kotlin-kapt'
 
 android {
-    compileSdkVersion 29
-    buildToolsVersion "29.0.3"
+    ndkVersion "21.1.6352462"
+    compileSdkVersion Deps.compileSdkVersion
+    buildToolsVersion Deps.buildToolsVersion
 
     defaultConfig {
         applicationId "org.myhush.silentdragon"
-        minSdkVersion 17
-        targetSdkVersion 29
+        minSdkVersion Deps.minSdkVersion
+        targetSdkVersion Deps.targetSdkVersion
+        multiDexEnabled true
         versionCode 4
         versionName "0.5.16"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
@@ -31,6 +35,15 @@ android {
         }
     }
 
+    compileOptions {
+        sourceCompatibility 1.8
+        targetCompatibility 1.8
+    }
+
+    kotlinOptions {
+        jvmTarget = "1.8"
+    }
+
 }
 
 def secretsPropertiesFile = rootProject.file("secrets.properties")
@@ -51,19 +64,48 @@ if (secretsPropertiesFile.exists()) {
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
-    implementation 'androidx.appcompat:appcompat:1.0.0'
-    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
+    implementation Deps.Kotlin.STDLIB
+    implementation Deps.Kotlin.Coroutines.ANDROID
+    implementation Deps.Kotlin.Coroutines.CORE
+
+    implementation Deps.AndroidX.APPCOMPAT
+    implementation Deps.AndroidX.CONSTRAINT_LAYOUT
+    implementation Deps.AndroidX.CORE_KTX
+    implementation Deps.AndroidX.FRAGMENT_KTX
+    implementation Deps.AndroidX.LEGACY
+    implementation Deps.AndroidX.MULTIDEX
+    implementation Deps.AndroidX.PAGING
+    implementation Deps.AndroidX.VECTOR_DRAWABLE
+    implementation Deps.AndroidX.Navigation.FRAGMENT_KTX
+    implementation Deps.AndroidX.Navigation.UI_KTX
+
     implementation 'com.google.android.material:material:1.0.0'
     implementation 'androidmads.library.qrgenearator:QRGenearator:1.0.3'
     implementation 'com.squareup.okhttp3:okhttp:3.10.0'
     implementation 'com.beust:klaxon:5.0.1'
-    implementation 'androidx.legacy:legacy-support-v4:1.0.0'
     implementation 'com.google.android.gms:play-services-vision:17.0.2'
-    implementation 'androidx.vectordrawable:vectordrawable:1.0.0'
     implementation 'com.github.joshjdevl.libsodiumjni:libsodium-jni-aar:2.0.1'
     implementation 'pl.droidsonroids.gif:android-gif-drawable:1.2.19'
+    implementation Deps.AndroidX.CameraX.CAMERA2
+    implementation Deps.AndroidX.CameraX.CORE
+
     testImplementation 'junit:junit:4.12'
     androidTestImplementation 'androidx.test.ext:junit:1.1.1'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.1.0'
+
+    // from Demo App SDK
+    implementation Deps.Hush.ANDROID_WALLET_PLUGINS
+    implementation Deps.Hush.Sdk.MAINNET
+    implementation Deps.Hush.KOTLIN_BIP39
+    implementation Deps.Grpc.ANDROID
+    implementation Deps.Grpc.OKHTTP
+    implementation Deps.Grpc.PROTOBUG
+    implementation Deps.Grpc.STUB
+    implementation 'javax.annotation:javax.annotation-api:1.3.2'
+    implementation Deps.AndroidX.Room.ROOM_KTX
+    implementation Deps.AndroidX.PAGING
+    implementation 'com.google.guava:guava:27.0.1-android'
+    kapt           Deps.AndroidX.Room.ROOM_COMPILER
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.5'
+    implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.3.5'
 }

app/src/main/AndroidManifest.xml

@@ -5,6 +5,7 @@
     xmlns:tools="http://schemas.android.com/tools"
     package="org.myhush.silentdragon">
 
+    <uses-permission android:name="android.permission.VIBRATE"/>
     <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.INTERNET" />
 
@@ -70,7 +71,6 @@
             android:theme="@style/AppTheme.NoActionBar">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-
                 <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
         </activity>

build.gradle

@@ -1,15 +1,19 @@
 // Top-level build file where you can add configuration options common to all sub-projects/modules.
+import org.myhush.silentdragon.Deps
 
 buildscript {
-    ext.kotlin_version = '1.3.50'
     repositories {
         google()
         jcenter()
         mavenCentral()
+        maven {
+            url 'https://maven.fabric.io/public'
+        }
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:3.6.0'
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
+        classpath 'com.android.tools.build:gradle:3.6.0'    // does this need 4.0 or another version?
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:${Deps.kotlinVersion}"
+        classpath 'io.fabric.tools:gradle:1.31.2'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
@@ -21,6 +25,7 @@ allprojects {
         google()
         jcenter()
         mavenCentral()
+        maven { url 'https://jitpack.io' }
     }
 }
 

buildSrc/build.gradle.kts

@@ -0,0 +1,7 @@
+plugins {
+    `kotlin-dsl`
+}
+
+repositories {
+    jcenter()
+}

buildSrc/src/main/java/org/myhush/silentdragon/Dependencies.kt

@@ -0,0 +1,61 @@
+package org.myhush.silentdragon
+
+object Deps {
+    const val kotlinVersion = "1.3.72"
+
+    const val compileSdkVersion = 29
+    const val buildToolsVersion = "29.0.3"
+    const val minSdkVersion = 17
+    const val targetSdkVersion = 29
+
+    object Kotlin : Version(kotlinVersion) {
+        val STDLIB = "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$version"
+        object Coroutines : Version("1.3.2") {
+            val ANDROID = "org.jetbrains.kotlinx:kotlinx-coroutines-android:$version"
+            val CORE = "org.jetbrains.kotlinx:kotlinx-coroutines-core:$version"
+        }
+    }
+    object AndroidX {
+        //const val ANNOTATION = "androidx.annotation:annotation:1.0.0"
+        const val APPCOMPAT = "androidx.appcompat:appcompat:1.0.0"
+        const val CONSTRAINT_LAYOUT = "androidx.constraintlayout:constraintlayout:1.1.3"
+        const val CORE_KTX = "androidx.core:core-ktx:1.3.0"
+        const val FRAGMENT_KTX = "androidx.fragment:fragment-ktx:1.1.0-beta01"
+        const val LEGACY = "androidx.legacy:legacy-support-v4:1.0.0"
+        const val MULTIDEX = "androidx.multidex:multidex:2.0.1"
+        const val PAGING = "androidx.paging:paging-runtime-ktx:2.1.2"
+        const val VECTOR_DRAWABLE = "androidx.vectordrawable:vectordrawable:1.0.0"
+
+        // for camera function
+        object CameraX : Version("1.0.0-beta04") {
+            val CAMERA2 = "androidx.camera:camera-camera2:1.0.0-beta04"
+            val CORE = "androidx.camera:camera-core:1.0.0-beta04"
+        }
+
+        object Navigation : Version("2.1.0") {
+            val FRAGMENT_KTX = "androidx.navigation:navigation-fragment-ktx:$version"
+            val UI_KTX = "androidx.navigation:navigation-ui-ktx:$version"
+        }
+        object Room : Version("2.2.5") {
+            val ROOM_COMPILER = "androidx.room:room-compiler:$version"
+            val ROOM_KTX = "androidx.room:room-ktx:$version"
+        }
+    }
+    // from Demo App SDK
+    object Hush {
+        val ANDROID_WALLET_PLUGINS = "cash.z.ecc.android:zcash-android-wallet-plugins:1.0.0"
+        val KOTLIN_BIP39 = "cash.z.ecc.android:kotlin-bip39:1.0.0-beta09"
+        object Sdk : Version("1.1.0-beta02") {
+            val MAINNET = "cash.z.ecc.android:sdk-mainnet:$version"
+            //val TESTNET = "cash.z.ecc.android:sdk-testnet:$version"
+        }
+    }
+    object Grpc : Version("1.25.0") {
+        val ANDROID = "io.grpc:grpc-android:$version"
+        val OKHTTP = "io.grpc:grpc-okhttp:$version"
+        val PROTOBUG ="io.grpc:grpc-protobuf-lite:$version"
+        val STUB = "io.grpc:grpc-stub:$version"
+    }
+}
+
+open class Version(@JvmField val version: String)