Init project.

example/android/app/src/main/AndroidManifest.xml

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+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+  package="com.example">
+
+    <uses-permission android:name="android.permission.INTERNET" />
+
+    <application
+      android:name=".MainApplication"
+      android:label="@string/app_name"
+      android:icon="@mipmap/ic_launcher"
+      android:roundIcon="@mipmap/ic_launcher_round"
+      android:allowBackup="false"
+      android:theme="@style/AppTheme">
+      <activity
+        android:name=".MainActivity"
+        android:label="@string/app_name"
+        android:configChanges="keyboard|keyboardHidden|orientation|screenSize|uiMode"
+        android:launchMode="singleTask"
+        android:windowSoftInputMode="adjustResize">
+        <intent-filter>
+            <action android:name="android.intent.action.MAIN" />
+            <category android:name="android.intent.category.LAUNCHER" />
+        </intent-filter>
+      </activity>
+      <activity android:name="com.facebook.react.devsupport.DevSettingsActivity" />
+    </application>
+
+</manifest>

example/android/app/src/main/java/com/example/MainActivity.java

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+package com.example;
+
+import com.facebook.react.ReactActivity;
+
+public class MainActivity extends ReactActivity {
+
+  /**
+   * Returns the name of the main component registered from JavaScript. This is used to schedule
+   * rendering of the component.
+   */
+  @Override
+  protected String getMainComponentName() {
+    return "example";
+  }
+}

example/android/app/src/main/java/com/example/MainApplication.java

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+package com.example;
+
+import android.app.Application;
+import android.content.Context;
+import com.facebook.react.PackageList;
+import com.facebook.react.ReactApplication;
+import com.facebook.react.ReactInstanceManager;
+import com.facebook.react.ReactNativeHost;
+import com.facebook.react.ReactPackage;
+import com.facebook.soloader.SoLoader;
+import java.lang.reflect.InvocationTargetException;
+import java.util.List;
+
+public class MainApplication extends Application implements ReactApplication {
+
+  private final ReactNativeHost mReactNativeHost =
+      new ReactNativeHost(this) {
+        @Override
+        public boolean getUseDeveloperSupport() {
+          return BuildConfig.DEBUG;
+        }
+
+        @Override
+        protected List<ReactPackage> getPackages() {
+          @SuppressWarnings("UnnecessaryLocalVariable")
+          List<ReactPackage> packages = new PackageList(this).getPackages();
+          // Packages that cannot be autolinked yet can be added manually here, for example:
+          // packages.add(new MyReactNativePackage());
+          return packages;
+        }
+
+        @Override
+        protected String getJSMainModuleName() {
+          return "index";
+        }
+      };
+
+  @Override
+  public ReactNativeHost getReactNativeHost() {
+    return mReactNativeHost;
+  }
+
+  @Override
+  public void onCreate() {
+    super.onCreate();
+    SoLoader.init(this, /* native exopackage */ false);
+    initializeFlipper(this, getReactNativeHost().getReactInstanceManager());
+  }
+
+  /**
+   * Loads Flipper in React Native templates. Call this in the onCreate method with something like
+   * initializeFlipper(this, getReactNativeHost().getReactInstanceManager());
+   *
+   * @param context
+   * @param reactInstanceManager
+   */
+  private static void initializeFlipper(
+      Context context, ReactInstanceManager reactInstanceManager) {
+    if (BuildConfig.DEBUG) {
+      try {
+        /*
+         We use reflection here to pick up the class that initializes Flipper,
+        since Flipper library is not available in release mode
+        */
+        Class<?> aClass = Class.forName("com.example.ReactNativeFlipper");
+        aClass
+            .getMethod("initializeFlipper", Context.class, ReactInstanceManager.class)
+            .invoke(null, context, reactInstanceManager);
+      } catch (ClassNotFoundException e) {
+        e.printStackTrace();
+      } catch (NoSuchMethodException e) {
+        e.printStackTrace();
+      } catch (IllegalAccessException e) {
+        e.printStackTrace();
+      } catch (InvocationTargetException e) {
+        e.printStackTrace();
+      }
+    }
+  }
+}

example/android/app/src/main/res/values/strings.xml

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+<resources>
+    <string name="app_name">example</string>
+</resources>

example/android/app/src/main/res/values/styles.xml

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+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
+        <!-- Customize your theme here. -->
+        <item name="android:textColor">#000000</item>
+    </style>
+
+</resources>