Pre-Drawables

android/app/build.gradle

@@ -2,86 +2,6 @@ apply plugin: "com.android.application"
 
 import com.android.build.OutputFile
 
-/**
- * The react.gradle file registers a task for each build variant (e.g. bundleDebugJsAndAssets
- * and bundleReleaseJsAndAssets).
- * These basically call `react-native bundle` with the correct arguments during the Android build
- * cycle. By default, bundleDebugJsAndAssets is skipped, as in debug/dev mode we prefer to load the
- * bundle directly from the development server. Below you can see all the possible configurations
- * and their defaults. If you decide to add a configuration block, make sure to add it before the
- * `apply from: "../../node_modules/react-native/react.gradle"` line.
- *
- * project.ext.react = [
- *   // the name of the generated asset file containing your JS bundle
- *   bundleAssetName: "index.android.bundle",
- *
- *   // the entry file for bundle generation
- *   entryFile: "index.android.js",
- *
- *   // whether to bundle JS and assets in debug mode
- *   bundleInDebug: false,
- *
- *   // whether to bundle JS and assets in release mode
- *   bundleInRelease: true,
- *
- *   // whether to bundle JS and assets in another build variant (if configured).
- *   // See http://tools.android.com/tech-docs/new-build-system/user-guide#TOC-Build-Variants
- *   // The configuration property can be in the following formats
- *   //         'bundleIn${productFlavor}${buildType}'
- *   //         'bundleIn${buildType}'
- *   // bundleInFreeDebug: true,
- *   // bundleInPaidRelease: true,
- *   // bundleInBeta: true,
- *
- *   // the root of your project, i.e. where "package.json" lives
- *   root: "../../",
- *
- *   // where to put the JS bundle asset in debug mode
- *   jsBundleDirDebug: "$buildDir/intermediates/assets/debug",
- *
- *   // where to put the JS bundle asset in release mode
- *   jsBundleDirRelease: "$buildDir/intermediates/assets/release",
- *
- *   // where to put drawable resources / React Native assets, e.g. the ones you use via
- *   // require('./image.png')), in debug mode
- *   resourcesDirDebug: "$buildDir/intermediates/res/merged/debug",
- *
- *   // where to put drawable resources / React Native assets, e.g. the ones you use via
- *   // require('./image.png')), in release mode
- *   resourcesDirRelease: "$buildDir/intermediates/res/merged/release",
- *
- *   // by default the gradle tasks are skipped if none of the JS files or assets change; this means
- *   // that we don't look at files in android/ or ios/ to determine whether the tasks are up to
- *   // date; if you have any other folders that you want to ignore for performance reasons (gradle
- *   // indexes the entire tree), add them here. Alternatively, if you have JS files in android/
- *   // for example, you might want to remove it from here.
- *   inputExcludes: ["android/**", "ios/**"],
- *
- *   // override which node gets called and with what additional arguments
- *   nodeExecutableAndArgs: ["node"]
- *
- *   // supply additional arguments to the packager
- *   extraPackagerArgs: []
- * ]
- */
-
-apply from: "../../node_modules/react-native/react.gradle"
-
-/**
- * Set this to true to create two separate APKs instead of one:
- *   - An APK that only works on ARM devices
- *   - An APK that only works on x86 devices
- * The advantage is the size of the APK is reduced by about 4MB.
- * Upload all the APKs to the Play Store and people will download
- * the correct one based on the CPU architecture of their device.
- */
-def enableSeparateBuildPerCPUArchitecture = false
-
-/**
- * Run Proguard to shrink the Java bytecode in release builds.
- */
-def enableProguardInReleaseBuilds = false
-
 android {
     compileSdkVersion 23
     buildToolsVersion "23.0.1"
@@ -96,17 +16,10 @@ android {
             abiFilters "armeabi-v7a", "x86"
         }
     }
-    splits {
-        abi {
-            reset()
-            enable enableSeparateBuildPerCPUArchitecture
-            universalApk false  // If true, also generate a universal APK
-            include "armeabi-v7a", "x86"
-        }
-    }
+
     buildTypes {
         release {
-            minifyEnabled enableProguardInReleaseBuilds
+            minifyEnabled false
             proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
         }
     }
@@ -127,8 +40,8 @@ android {
 
 dependencies {
     compile fileTree(dir: "libs", include: ["*.jar"])
+    compile project(":library")
     compile "com.android.support:appcompat-v7:23.0.1"
-    compile "com.facebook.react:react-native:+"  // From node_modules
 }
 
 // Run this once to be able to run the application with BUCK

android/app/src/main/AndroidManifest.xml

@@ -17,7 +17,7 @@
       android:icon="@mipmap/ic_launcher"
       android:theme="@style/AppTheme">
       <activity
-        android:name=".MainActivity"
+        android:name="com.example.library.MainActivity"
         android:label="@string/app_name"
         android:configChanges="keyboard|keyboardHidden|orientation|screenSize"
         android:windowSoftInputMode="adjustResize">

android/library/.gitignore

@@ -0,0 +1 @@
+/build

android/library/build.gradle

@@ -0,0 +1,120 @@
+apply plugin: 'com.android.library'
+
+/**
+ * The react.gradle file registers a task for each build variant (e.g. bundleDebugJsAndAssets
+ * and bundleReleaseJsAndAssets).
+ * These basically call `react-native bundle` with the correct arguments during the Android build
+ * cycle. By default, bundleDebugJsAndAssets is skipped, as in debug/dev mode we prefer to load the
+ * bundle directly from the development server. Below you can see all the possible configurations
+ * and their defaults. If you decide to add a configuration block, make sure to add it before the
+ * `apply from: "../../node_modules/react-native/react.gradle"` line.
+ *
+ * project.ext.react = [
+ *   // the name of the generated asset file containing your JS bundle
+ *   bundleAssetName: "index.android.bundle",
+ *
+ *   // the entry file for bundle generation
+ *   entryFile: "index.android.js",
+ *
+ *   // whether to bundle JS and assets in debug mode
+ *   bundleInDebug: false,
+ *
+ *   // whether to bundle JS and assets in release mode
+ *   bundleInRelease: true,
+ *
+ *   // whether to bundle JS and assets in another build variant (if configured).
+ *   // See http://tools.android.com/tech-docs/new-build-system/user-guide#TOC-Build-Variants
+ *   // The configuration property can be in the following formats
+ *   //         'bundleIn${productFlavor}${buildType}'
+ *   //         'bundleIn${buildType}'
+ *   // bundleInFreeDebug: true,
+ *   // bundleInPaidRelease: true,
+ *   // bundleInBeta: true,
+ *
+ *   // the root of your project, i.e. where "package.json" lives
+ *   root: "../../",
+ *
+ *   // where to put the JS bundle asset in debug mode
+ *   jsBundleDirDebug: "$buildDir/intermediates/assets/debug",
+ *
+ *   // where to put the JS bundle asset in release mode
+ *   jsBundleDirRelease: "$buildDir/intermediates/assets/release",
+ *
+ *   // where to put drawable resources / React Native assets, e.g. the ones you use via
+ *   // require('./image.png')), in debug mode
+ *   resourcesDirDebug: "$buildDir/intermediates/res/merged/debug",
+ *
+ *   // where to put drawable resources / React Native assets, e.g. the ones you use via
+ *   // require('./image.png')), in release mode
+ *   resourcesDirRelease: "$buildDir/intermediates/res/merged/release",
+ *
+ *   // by default the gradle tasks are skipped if none of the JS files or assets change; this means
+ *   // that we don't look at files in android/ or ios/ to determine whether the tasks are up to
+ *   // date; if you have any other folders that you want to ignore for performance reasons (gradle
+ *   // indexes the entire tree), add them here. Alternatively, if you have JS files in android/
+ *   // for example, you might want to remove it from here.
+ *   inputExcludes: ["android/**", "ios/**"],
+ *
+ *   // override which node gets called and with what additional arguments
+ *   nodeExecutableAndArgs: ["node"]
+ *
+ *   // supply additional arguments to the packager
+ *   extraPackagerArgs: []
+ * ]
+ */
+
+apply from: "../../node_modules/react-native/react.gradle"
+
+/**
+ * Set this to true to create two separate APKs instead of one:
+ *   - An APK that only works on ARM devices
+ *   - An APK that only works on x86 devices
+ * The advantage is the size of the APK is reduced by about 4MB.
+ * Upload all the APKs to the Play Store and people will download
+ * the correct one based on the CPU architecture of their device.
+ */
+def enableSeparateBuildPerCPUArchitecture = false
+
+/**
+ * Run Proguard to shrink the Java bytecode in release builds.
+ */
+def enableProguardInReleaseBuilds = false
+
+android {
+    compileSdkVersion 23
+    buildToolsVersion "23.0.1"
+
+    defaultConfig {
+        minSdkVersion 16
+        targetSdkVersion 22
+        versionCode 1
+        versionName "1.0"
+
+        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
+
+    }
+    splits {
+        abi {
+            reset()
+            enable enableSeparateBuildPerCPUArchitecture
+            universalApk false  // If true, also generate a universal APK
+            include "armeabi-v7a", "x86"
+        }
+    }
+    buildTypes {
+        release {
+            minifyEnabled enableProguardInReleaseBuilds
+            proguardFiles getDefaultProguardFile("proguard-android.txt"), "proguard-rules.pro"
+        }
+    }
+}
+
+dependencies {
+    compile fileTree(dir: 'libs', include: ['*.jar'])
+    androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
+        exclude group: 'com.android.support', module: 'support-annotations'
+    })
+    compile 'com.android.support:appcompat-v7:23.4.0'
+    compile "com.facebook.react:react-native:+"  // From node_modules
+    testCompile 'junit:junit:4.12'
+}

android/library/proguard-rules.pro

@@ -0,0 +1,25 @@
+# Add project specific ProGuard rules here.
+# By default, the flags in this file are appended to flags specified
+# in /Users/johnshelley/Library/Android/sdk/tools/proguard/proguard-android.txt
+# You can edit the include path and order by changing the proguardFiles
+# directive in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# Add any project specific keep options here:
+
+# 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

android/library/src/androidTest/java/com/example/library/ExampleInstrumentedTest.java

@@ -0,0 +1,26 @@
+package com.example.library;
+
+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.*;
+
+/**
+ * Instrumentation 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() throws Exception {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getTargetContext();
+
+        assertEquals("com.example.library.test", appContext.getPackageName());
+    }
+}

android/library/src/main/AndroidManifest.xml

@@ -0,0 +1,10 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+
+    package="com.example.library">
+
+    <application android:allowBackup="true" android:label="@string/app_name"
+        android:supportsRtl="true">
+
+    </application>
+
+</manifest>

android/app/src/main/java/com/demoandroidlibrary/MainActivity.java → android/library/src/main/java/com/example/library/MainActivity.java

@@ -1,4 +1,4 @@
-package com.demoandroidlibrary;
+package com.example.library;
 
 import com.facebook.react.ReactActivity;
 

android/library/src/main/res/values/strings.xml

@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">Library</string>
+</resources>

android/library/src/test/java/com/example/library/ExampleUnitTest.java

@@ -0,0 +1,17 @@
+package com.example.library;
+
+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() throws Exception {
+        assertEquals(4, 2 + 2);
+    }
+}

android/settings.gradle

@@ -1,3 +1,3 @@
 rootProject.name = 'DemoAndroidLibrary'
 
-include ':app'
+include ':app', ':library'