1、通过重写 ReactActivityDelegate 方法传入参数，Activity代码如下：
import android.app.Activity; import android.os.Bundle; import com.facebook.react.ReactActivity; import com.facebook.react.ReactActivityDelegate; import com.facebook.react.bridge.ReactContext; public class RnTestActivity extends ReactActivity { /** * Returns the name of the main component registered from JavaScript. * This is used to schedule rendering of the component. */ private ReactContext mainreactContext; private boolean ad = true; @Override protected String getMainComponentName() { return "TestProject"; } @Override protected ReactActivityDelegate createReactActivityDelegate() { return new MyReactDelegate(this,getMainComponentName()); } //自定义MyReactDelegate class MyReactDelegate extends ReactActivityDelegate { public MyReactDelegate(Activity activity , @javax.annotation.Nullable String mainComponentName) { super(activity, mainComponentName); } @javax.annotation.Nullable @Override protected Bundle getLaunchOptions() { Bundle bundle = new Bundle(); bundle.putString("params","activity传递的参数"); return bundle; } } }2、在index.android.js中获取参数，js代码如下：
import React,{Component} from 'react'; import {AppRegistry,StyleSheet,Text,View,AppState,TouchableOpacity,Image,Button} from 'react-native'; import app3 from './myapp'; import ChatScreenA from './projectlist'; //从另外一个js文件中获取名为ChatScreenA的Component import codePush from 'react-native-code-push'; //用于热更新，此案例中可以不用管。 import { StackNavigator } from 'react-navigation'; //js界面间的导航，此案例中可以不用管。 let codePushOptions = { checkFrequency: codePush.CheckFrequency.ON_APP_RESUME }; export default class myapp extends Component{ constructor(props){ super(props); this.state ={ message:props.params //这里通过props接收参数,params为获取参数的key值 } } componentDidMount(){ codePush.sync({ updateDialog: true, installMode: codePush.InstallMode.IMMEDIATE }); } render(){ var initProps = this.props.params; return( <View style={styles.container}> <Text style={styles.welcome}> Welcome to React Native! </Text> <Text style={styles.instructions}> To get started </Text> <Text style={styles.instructions}> {this.state.message} //传入的参数在这里展示，展示结果应该是:activity传递的参数 </Text> </View> ); } } const styles = StyleSheet.create({ container:{ flex:1, justifyContent:'center', alignItems:'center', backgroundColor:'#F5FCFF' }, welcome:{ fontSize:20, margin:10, textAlign:'center' }, instructions:{ textAlign:'center', color:'#333333', marginBottom:5 } }); AppRegistry.registerComponent('TestProject',()=>codePush(codePushOptions)(myapp));本文参考以下资料：http://blog.csdn.net/zach_zhou/article/details/71305139
