index.android.js

/**
 * Sample React Native App
 * https://github.com/facebook/react-native
 * @flow
 */

import React, { Component } from "react";
import {
  AppRegistry,
  StyleSheet,
  Text,
  View,
  TouchableOpacity
} from "react-native";
import codePush from "react-native-code-push";

class MyApp extends Component {
  onPress = () => {
    codePush.sync({
      updateDialog: true,
      installMode: codePush.InstallMode.IMMEDIATE
    });
  };
  render() {
    return (
      <View style={styles.container}>
        <Text style={styles.welcome}>Welcome to React Native!</Text>
        <Text style={styles.instructions}>
          To get started, edit index.android.js
        </Text>
        <Text style={{ color: "#eb4f38" }}>更新啦</Text>
        <TouchableOpacity onPress={this.onPress}>
          <Text>检查要不要更新哦</Text>
        </TouchableOpacity>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: "center",
    alignItems: "center",
    backgroundColor: "#F5FCFF"
  },
  welcome: {
    fontSize: 20,
    textAlign: "center",
    margin: 10
  },
  instructions: {
    textAlign: "center",
    color: "#333333",
    marginBottom: 5
  }
});

export default codePush(MyApp);

AppRegistry.registerComponent("MyApp", () => MyApp);