Release React Native for Android

This is an early release and there are several things that are known
not to work if you're porting your iOS app to Android.

See the Known Issues guide on the website.

We will work with the community to reach platform parity with iOS.

ReactAndroid/src/main/java/com/facebook/react/modules/fresco/FrescoModule.java

@@ -0,0 +1,76 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ */
+
+package com.facebook.react.modules.fresco;
+
+import android.content.Context;
+
+import com.facebook.cache.common.CacheKey;
+import com.facebook.common.internal.AndroidPredicates;
+import com.facebook.common.soloader.SoLoaderShim;
+import com.facebook.drawee.backends.pipeline.Fresco;
+import com.facebook.imagepipeline.backends.okhttp.OkHttpImagePipelineConfigFactory;
+import com.facebook.imagepipeline.core.ImagePipelineConfig;
+import com.facebook.imagepipeline.core.ImagePipelineFactory;
+import com.facebook.react.bridge.ReactApplicationContext;
+import com.facebook.react.bridge.ReactContextBaseJavaModule;
+import com.facebook.react.modules.common.ModuleDataCleaner;
+import com.facebook.react.modules.network.OkHttpClientProvider;
+import com.facebook.soloader.SoLoader;
+
+import com.squareup.okhttp.OkHttpClient;
+
+/**
+ * Module to initialize the Fresco library.
+ *
+ * <p>Does not expose any methods to JavaScript code. For initialization and cleanup only.
+ */
+public class FrescoModule extends ReactContextBaseJavaModule implements
+    ModuleDataCleaner.Cleanable {
+
+  public FrescoModule(ReactApplicationContext reactContext) {
+    super(reactContext);
+  }
+
+  @Override
+  public void initialize() {
+    super.initialize();
+    // Make sure the SoLoaderShim is configured to use our loader for native libraries.
+    // This code can be removed if using Fresco from Maven rather than from source
+    SoLoaderShim.setHandler(
+        new SoLoaderShim.Handler() {
+          @Override
+          public void loadLibrary(String libraryName) {
+            SoLoader.loadLibrary(libraryName);
+          }
+        });
+    Context context = this.getReactApplicationContext().getApplicationContext();
+    OkHttpClient okHttpClient = OkHttpClientProvider.getOkHttpClient();
+    ImagePipelineConfig config = OkHttpImagePipelineConfigFactory
+        .newBuilder(context, okHttpClient)
+        .setDownsampleEnabled(false)
+        .build();
+    Fresco.initialize(context, config);
+  }
+
+  @Override
+  public String getName() {
+    return "FrescoModule";
+  }
+
+  @Override
+  public void clearSensitiveData() {
+    // Clear image cache.
+    ImagePipelineFactory imagePipelineFactory = Fresco.getImagePipelineFactory();
+    imagePipelineFactory.getBitmapMemoryCache().removeAll(AndroidPredicates.<CacheKey>True());
+    imagePipelineFactory.getEncodedMemoryCache().removeAll(AndroidPredicates.<CacheKey>True());
+    imagePipelineFactory.getMainDiskStorageCache().clearAll();
+    imagePipelineFactory.getSmallImageDiskStorageCache().clearAll();
+  }
+}