React native 移植原生android module

第一步:创建一个普通的module

第二步:添加依赖

compile 'com.facebook.react:react-native:0.20.1'

第三步:添加网络权限

   <uses-permission android:name="android.permission.INTERNET"/>

第四步:添加原生代码:

package com.xuan.reactnativetest;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.KeyEvent;

import com.facebook.react.LifecycleState;
import com.facebook.react.ReactInstanceManager;
import com.facebook.react.ReactRootView;
import com.facebook.react.modules.core.DefaultHardwareBackBtnHandler;
import com.facebook.react.shell.MainReactPackage;

public class MainActivity extends AppCompatActivity implements DefaultHardwareBackBtnHandler {

    private ReactRootView reactRootView;
    private ReactInstanceManager reactInstanceManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        reactRootView = new ReactRootView(this);
        //ReactInstanceManager 来管理activity的生命周期
        reactInstanceManager = ReactInstanceManager.builder()
                .setApplication(getApplication())
                .setBundleAssetName("index.android.bundle")
                .setJSMainModuleName("index.android")
                .addPackage(new MainReactPackage())
                .setUseDeveloperSupport(BuildConfig.DEBUG)
                .setInitialLifecycleState(LifecycleState.RESUMED)
                .build();
        reactRootView.startReactApplication(reactInstanceManager, "module name:hello world", null);
        setContentView(reactRootView);
    }

    @Override
    public void onBackPressed() {
        if (reactInstanceManager != null) {
            reactInstanceManager.onBackPressed();
        } else {
            super.onBackPressed();
        }
    }

    @Override
    protected void onPause() {
        super.onPause();
        if (reactInstanceManager != null) {
            reactInstanceManager.onPause();
        }
    }

    @Override
    protected void onResume() {
        super.onResume();
        if (reactInstanceManager != null) {
            reactInstanceManager.onResume(this, this);
        }
    }

    @Override
    public void invokeDefaultOnBackPressed() {
        super.onBackPressed();
    }

    @Override
    public boolean onKeyUp(int keyCode, KeyEvent event) {
        if (keyCode == KeyEvent.KEYCODE_MENU && reactInstanceManager != null) {
            reactInstanceManager.showDevOptionsDialog();
            return true;
        }
        return super.onKeyUp(keyCode, event);

    }
}