react-nativeでrun-androidをするとエラーが出る

Question

###前提・実現したいこと
下記のサンプルを動かしたいのですが、エラーが出て動かすことが出来ません。
example-react-native-redux
###発生している問題・エラーメッセージ

example-react-native-redux\Counter\android\app\src\main\java\com\counter\MainApplication.java:19: エラー: <anonymous com.counter.MainApplication$1>のgetUseDeveloperSupport()はReactNativeHostのgetUseDeveloperSupport()をオーバーライドできません
    protected boolean getUseDeveloperSupport() {
                      ^
  (public)より弱いアクセス権限を割り当てようとしました
エラー1個
:app:compileDebugJavaWithJavac FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:compileDebugJavaWithJavac'.
> Compilation failed; see the compiler error output for details.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

Total time: 9 mins 12.35 secs
Could not install the app on the device, read the error above for details.
Make sure you have an Android emulator running or a device connected and have
set up your Android development environment:
https://facebook.github.io/react-native/docs/android-setup.html

###該当のソースコード

package com.counter;

import android.app.Application;
import android.util.Log;

import com.facebook.react.ReactApplication;
import com.facebook.react.ReactInstanceManager;
import com.facebook.react.ReactNativeHost;
import com.facebook.react.ReactPackage;
import com.facebook.react.shell.MainReactPackage;

import java.util.Arrays;
import java.util.List;

public class MainApplication extends Application implements ReactApplication {

  private final ReactNativeHost mReactNativeHost = new ReactNativeHost(this) {
    @Override
    protected boolean getUseDeveloperSupport() {
      return BuildConfig.DEBUG;
    }

    @Override
    protected List<ReactPackage> getPackages() {
      return Arrays.<ReactPackage>asList(
          new MainReactPackage()
      );
    }
  };

  @Override
  public ReactNativeHost getReactNativeHost() {
      return mReactNativeHost;
  }
}

{
  "name": "Counter",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "react-native start",
    "setup_project": "npm run step1; npm run step2",
    "step1": "rm -rf node_modules/react-native/node_modules/react; rm -rf node_modules/react-native/node_modules/fbjs; rm -rf node_modules/react/node_modules/fbjs",
    "step2": "cd node_modules; find . -name .babelrc | grep -v packager | xargs rm"
  },
  "dependencies": {
    "react": "15.5.4",
    "react-native": "0.44.2",
    "react-redux": "5.0.5",
    "redux": "3.6.0",
    "redux-actions": "2.0.3",
    "redux-thunk": "2.2.0"
  }
}

Answer 1

protected boolean getUseDeveloperSupport() {

この部分を

public boolean getUseDeveloperSupport() {

に変える

##その他の注意点
npmでreactを指定してインストールする必要がある

 npm install --save react@16.0.0-alpha.6 react-native

android/gradle/gradle-wrapper.propertiesを

distributionUrl=https\://services.gradle.org/distributions/gradle-2.10-all.zip
↓
distributionUrl=https\://services.gradle.org/distributions/gradle-2.2-all.zip