c sqlserver mysql_sqlserver模仿mysql函数FIND_IN_SET,group_concat的功能

最新推荐文章于 2023-07-04 10:26:50 发布

原创最新推荐文章于 2023-07-04 10:26:50 发布 · 166 阅读

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#c sqlserver mysql

本文介绍了一个React Native应用如何集成极光推送服务。通过使用jpush-react-native模块，可以轻松实现推送消息接收、通知监听等功能。文章展示了关键代码片段，包括组件挂载时初始化推送服务、监听不同事件及组件卸载时清理监听器等。

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风云坤：import React, { Component } from 'react';|@|import {|@| AppRegistry,|@| BackAndroid,|@| StyleSheet,|@| Text,|@| View|@|} from 'react-native';|@|import JPushModule from 'jpush-react-native';|@||@|export default class xuexi6 extends Component {|@||@| constructor(props) {|@| super(props);|@||@| this.state = {|@| bg: '#ffffff',|@| appkey: 'AppKey',|@| imei: 'IMEI',|@| package: 'PackageName',|@| deviceId: 'DeviceId',|@| version: 'Version',|@| pushMsg: 'PushMessage',|@| registrationId: 'registrationId',|@| };|@| |@| }|@||@| componentDidMount() {|@| JPushModule.getInfo((map) => {|@| this.setState({|@| appkey: map.myAppKey,|@| imei: map.myImei,|@| package: map.myPackageName,|@| deviceId: map.myDeviceId,|@| version: map.myVersion|@| });|@| });|@| JPushModule.notifyJSDidLoad((resultCode) => {|@| if (resultCode === 0) {|@| }|@| });|@| JPushModule.addReceiveCustomMsgListener((map) => {|@| this.setState({|@| pushMsg: map.message|@| });|@| console.log("extras: " ＋ map.extras);|@| });|@| JPushModule.addReceiveNotificationListener((map) => {|@| console.log("alertContent: " ＋ map.alertContent);|@| console.log("extras: " ＋ map.extras);|@| // var extra = JSON.parse(map.extras);|@| // console.log(extra.key ＋ ": " ＋ extra.value);|@| });|@| JPushModule.addReceiveOpenNotificationListener((map) => {|@| console.log("Opening notification!");|@| console.log("map.extra: " ＋ map.extras);|@| //JPushModule.jumpToPushActivity("SecondActivity");|@| });|@| JPushModule.addGetRegistrationIdListener((registrationId) => {|@| console.log("Device register succeed, registrationId " ＋ registrationId);|@| });|@| }|@||@| componentWillUnmount() {|@| JPushModule.removeReceiveCustomMsgListener(receiveCustomMsgEvent);|@| JPushModule.removeReceiveNotificationListener(receiveNotificationEvent);|@| JPushModule.removeReceiveOpenNotificationListener(openNotificationEvent);|@| JPushModule.removeGetRegistrationIdListener(getRegistrationIdEvent);|@| console.log("Will clear all notifications");|@| JPushModule.clearAllNotifications();|@| }|@||@| render() {|@| return (|@| |@| |@| Welcome to React Native!dddddddddddddddd|@| |@| |@| To get started, edit index.android.js|@| |@| |@| Double tap R on your keyboard to reload,{'\n'}|@| Shake or press menu button for dev menu|@| |@| |@| );|@| }|@|}|@||@|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,|@| },|@|});|@||@|AppRegistry.registerComponent('xuexi6', () => xuexi6);