Fix Examples/{UIExplorer,Movies}

Summary:
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UIExplorerActivity.java and MoviesActivity.java should override `getReactNativeHost` method. And this PR will fix https://github.com/facebook/react-native/issues/8215.

**Test plan (required)**

Demonstrate the code is solid. Example: The exact commands you ran and their output, screenshots / videos if the pull request changes UI.

Make sure tests pass on both Travis and Circle CI.

**Code formatting**

Look around. Match the style of the rest of the codebase. See also the simple [style guide](https://github.com/facebook/react-native/blob/master/CONTRIBUTING.md#style-guide).

For more info, see the ["Pull Requests" section of our "Contributing" guidelines](https://github.com/facebook/react-native/blob/master/CONTRIBUTING.md#pull-requests).
Closes https://github.com/facebook/react-native/pull/8223

Differential Revision: D3456957

fbshipit-source-id: cc0b51e5bfaec71d210bfba81b1f7cd06a723d8c

Examples/Movies/android/app/src/main/AndroidManifest.xml

@@ -12,6 +12,7 @@
       android:targetSdkVersion="22" />
 
     <application
+      android:name=".MoviesApplication"
       android:allowBackup="true"
       android:label="@string/app_name"
       android:icon="@drawable/rotten_tomatoes_icon"

Examples/Movies/android/app/src/main/java/com/facebook/react/movies/MoviesActivity.java

@@ -14,39 +14,10 @@
 package com.facebook.react.movies;
 
 import com.facebook.react.ReactActivity;
-import com.facebook.react.ReactPackage;
-import com.facebook.react.shell.MainReactPackage;
-
-import java.util.Arrays;
-import java.util.List;
-
-import javax.annotation.Nullable;
 
 public class MoviesActivity extends ReactActivity {
   @Override
   protected String getMainComponentName() {
     return "MoviesApp";
   }
-
-  @Override
-  protected @Nullable String getBundleAssetName() {
-    return "MoviesApp.android.bundle";
-  };
-
-  @Override
-  protected String getJSMainModuleName() {
-    return "Examples/Movies/MoviesApp.android";
-  }
-
-  @Override
-  protected boolean getUseDeveloperSupport() {
-    return true;
-  }
-
-  @Override
-  protected List<ReactPackage> getPackages() {
-    return Arrays.<ReactPackage>asList(
-      new MainReactPackage()
-    );
-  }
 }

Examples/Movies/android/app/src/main/java/com/facebook/react/movies/MoviesApplication.java

@@ -0,0 +1,58 @@
+/**
+ * The examples provided by Facebook are for non-commercial testing and
+ * evaluation purposes only.
+ *
+ * Facebook reserves all rights not expressly granted.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
+ * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package com.facebook.react.movies;
+
+import android.app.Application;
+
+import com.facebook.react.ReactApplication;
+import com.facebook.react.ReactNativeHost;
+import com.facebook.react.ReactPackage;
+import com.facebook.react.shell.MainReactPackage;
+
+import java.util.Arrays;
+import java.util.List;
+
+import javax.annotation.Nullable;
+
+public class MoviesApplication extends Application implements ReactApplication {
+  private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) {
+    @Override
+    public String getJSMainModuleName() {
+      return "Examples/Movies/MoviesApp.android";
+    }
+
+    @Override
+    public @Nullable String getBundleAssetName() {
+      return "MoviesApp.android.bundle";
+    }
+
+    @Override
+    protected boolean getUseDeveloperSupport() {
+      return true;
+    }
+
+    @Override
+    protected List<ReactPackage> getPackages() {
+      return Arrays.<ReactPackage>asList(
+        new MainReactPackage()
+      );
+    }
+  };
+
+  @Override
+  public ReactNativeHost getReactNativeHost() {
+    return mReactNativeHost;
+  }
+}

Examples/UIExplorer/android/app/src/main/AndroidManifest.xml

@@ -16,6 +16,7 @@
     android:targetSdkVersion="23" />
 
   <application
+      android:name=".UIExplorerApplication"
       android:allowBackup="true"
       android:icon="@drawable/launcher_icon"
       android:label="@string/app_name"

Examples/UIExplorer/android/app/src/main/java/UIExplorerActivity.java

@@ -1,78 +0,0 @@
-/**
- * The examples provided by Facebook are for non-commercial testing and
- * evaluation purposes only.
- *
- * Facebook reserves all rights not expressly granted.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
- * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
-package com.facebook.react.uiapp;
-
-import com.facebook.react.ReactActivity;
-import com.facebook.react.ReactPackage;
-import com.facebook.react.shell.MainReactPackage;
-import com.facebook.react.uiapp.R;
-
-import java.util.Arrays;
-import java.util.List;
-import javax.annotation.Nullable;
-
-import android.os.Bundle;
-
-public class UIExplorerActivity extends ReactActivity {
-  private final String PARAM_ROUTE = "route";
-  private Bundle mInitialProps = null;
-
-  @Override
-  protected void onCreate(Bundle savedInstanceState) {
-      // Get remote param before calling super which uses it
-      Bundle bundle = getIntent().getExtras();
-      if (bundle != null && bundle.containsKey(PARAM_ROUTE)) {
-          String routeUri = new StringBuilder("rnuiexplorer://example/")
-            .append(bundle.getString(PARAM_ROUTE))
-            .append("Example")
-            .toString();
-          mInitialProps = new Bundle();
-          mInitialProps.putString("exampleFromAppetizeParams", routeUri);
-      }
-      super.onCreate(savedInstanceState);
-  }
-
-  @Override
-  protected Bundle getLaunchOptions() {
-      return mInitialProps;
-  }
-
-  @Override
-  protected String getMainComponentName() {
-      return "UIExplorerApp";
-  }
-
-  @Override
-  protected @Nullable String getBundleAssetName() {
-    return "UIExplorerApp.android.bundle";
-  };
-
-  @Override
-  protected String getJSMainModuleName() {
-    return "Examples/UIExplorer/UIExplorerApp.android";
-  }
-
-  @Override
-  protected boolean getUseDeveloperSupport() {
-      return true;
-  }
-
-  @Override
-  protected List<ReactPackage> getPackages() {
-    return Arrays.<ReactPackage>asList(
-      new MainReactPackage()
-    );
-  }
-}

Examples/UIExplorer/android/app/src/main/java/com/facebook/react/uiapp/UIExplorerActivity.java

@@ -0,0 +1,49 @@
+/**
+ * The examples provided by Facebook are for non-commercial testing and
+ * evaluation purposes only.
+ *
+ * Facebook reserves all rights not expressly granted.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
+ * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package com.facebook.react.uiapp;
+
+import android.os.Bundle;
+
+import com.facebook.react.ReactActivity;
+
+public class UIExplorerActivity extends ReactActivity {
+  private final String PARAM_ROUTE = "route";
+  private Bundle mInitialProps = null;
+
+  @Override
+  protected void onCreate(Bundle savedInstanceState) {
+    // Get remote param before calling super which uses it
+    Bundle bundle = getIntent().getExtras();
+    if (bundle != null && bundle.containsKey(PARAM_ROUTE)) {
+      String routeUri = new StringBuilder("rnuiexplorer://example/")
+        .append(bundle.getString(PARAM_ROUTE))
+        .append("Example")
+        .toString();
+      mInitialProps = new Bundle();
+      mInitialProps.putString("exampleFromAppetizeParams", routeUri);
+    }
+    super.onCreate(savedInstanceState);
+  }
+
+  @Override
+  protected Bundle getLaunchOptions() {
+    return mInitialProps;
+  }
+
+  @Override
+  protected String getMainComponentName() {
+    return "UIExplorerApp";
+  }
+}

Examples/UIExplorer/android/app/src/main/java/com/facebook/react/uiapp/UIExplorerApplication.java

@@ -0,0 +1,58 @@
+/**
+ * The examples provided by Facebook are for non-commercial testing and
+ * evaluation purposes only.
+ *
+ * Facebook reserves all rights not expressly granted.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON INFRINGEMENT. IN NO EVENT SHALL
+ * FACEBOOK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+package com.facebook.react.uiapp;
+
+import android.app.Application;
+
+import com.facebook.react.ReactApplication;
+import com.facebook.react.ReactNativeHost;
+import com.facebook.react.ReactPackage;
+import com.facebook.react.shell.MainReactPackage;
+
+import java.util.Arrays;
+import java.util.List;
+
+import javax.annotation.Nullable;
+
+public class UIExplorerApplication extends Application implements ReactApplication {
+  private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) {
+    @Override
+    public String getJSMainModuleName() {
+      return "Examples/UIExplorer/UIExplorerApp.android";
+    }
+
+    @Override
+    public @Nullable String getBundleAssetName() {
+      return "UIExplorerApp.android.bundle";
+    }
+
+    @Override
+    public boolean getUseDeveloperSupport() {
+      return true;
+    }
+
+    @Override
+    public List<ReactPackage> getPackages() {
+      return Arrays.<ReactPackage>asList(
+        new MainReactPackage()
+      );
+    }
+  };
+
+  @Override
+  public ReactNativeHost getReactNativeHost() {
+    return mReactNativeHost;
+  }
+};