一、前言
9月,又到开学的季节。为每个一直默默努力的自己点赞!最近都沉浸在react native原生app开发中,之前也有使用vue/react/angular等技术开发过聊天室项目,另外还使用RN技术做了个自定义模态弹窗rnPop组件。
一、项目简述
基于react+react-native+react-navigation+react-redux+react-native-swiper+rnPop等技术开发的仿微信原生App界面聊天室——RN_ChatRoom,实现了原生app启动页、AsyncStorage本地存储登录拦截、集成rnPop模态框功能(仿微信popupWindow弹窗菜单)、消息触摸列表、发送消息、表情(动图),图片预览,拍摄图片、发红包、仿微信朋友圈等功能。
二、技术点
- MVVM框架:react / react-native / react-native-cli
- 状态管理:react-redux / redux
- 页面导航:react-navigation
- rn弹窗组件:rnPop
- 打包工具:webpack 2.0
- 轮播组件:react-native-swiper
- 图片/相册:react-native-image-picker
- {
- "name": "RN_ChatRoom",
- "version": "0.0.1",
- "aboutMe": "QQ:282310962 、 wx:xy190310",
- "dependencies": {
- "react": "16.8.6",
- "react-native": "0.60.4"
- },
- "devDependencies": {
- "@babel/core": "^7.5.5",
- "@babel/runtime": "^7.5.5",
- "@react-native-community/async-storage": "^1.6.1",
- "@react-native-community/eslint-config": "^0.0.5",
- "babel-jest": "^24.8.0",
- "eslint": "^6.1.0",
- "jest": "^24.8.0",
- "metro-react-native-babel-preset": "^0.55.0",
- "react-native-gesture-handler": "^1.3.0",
- "react-native-image-picker": "^1.0.2",
- "react-native-swiper": "^1.5.14",
- "react-navigation": "^3.11.1",
- "react-redux": "^7.1.0",
- "react-test-renderer": "16.8.6",
- "redux": "^4.0.4",
- "redux-thunk": "^2.3.0"
- },
- "jest": {
- "preset": "react-native"
- }
- }
















◆ App全屏幕启动页splash模板
react-native如何全屏启动? 设置StatusBar顶部条背景为透明 translucent={true},并配合RN动画Animated
- /**
- * @desc 启动页面
- */
- import React, { Component } from 'react'
- import { StatusBar, Animated, View, Text, Image } from 'react-native'
- export default class Splash extends Component{
- constructor(props){
- super(props)
- this.state = {
- animFadeIn: new Animated.Value(0),
- animFadeOut: new Animated.Value(1),
- }
- }
- render(){
- return (
- <Animated.View style={[GStyle.flex1DC_a_j, {backgroundColor: '#1a4065', opacity: this.state.animFadeOut}]}>
- <StatusBar backgroundColor='transparent' barStyle='light-content' translucent={true} />
-
- <View style={GStyle.flex1_a_j}>
- <Image source={require('../assets/img/ic_default.jpg')} style={{borderRadius: 100, width: 100, height: 100}} />
- </View>
- <View style={[GStyle.align_c, {paddingVertical: 20}]}>
- <Text style={{color: '#dbdbdb', fontSize: 12, textAlign: 'center',}}>RN-ChatRoom v1.0.0</Text>
- </View>
- </Animated.View>
- )
- }
- componentDidMount(){
- // 判断是否登录
- storage.get('hasLogin', (err, object) => {
- setTimeout(() => {
- Animated.timing(
- this.state.animFadeOut, {duration: 300, toValue: 0}
- ).start(()=>{
- // 跳转页面
- util.navigationReset(this.props.navigation, (!err && object && object.hasLogin) ? 'Index' : 'Login')
- })
- }, 1500);
- })
- }
- }
◆ RN本地存储技术async-storage
- /**
- * @desc 本地存储函数
- */
- import AsyncStorage from '@react-native-community/async-storage'
- export default class Storage{
- static get(key, callback){
- return AsyncStorage.getItem(key, (err, object) => {
- callback(err, JSON.parse(object))
- })
- }
- static set(key, data, callback){
- return AsyncStorage.setItem(key, JSON.stringify(data), callback)
- }
- static del(key){
- return AsyncStorage.removeItem(key)
- }
- static clear(){
- AsyncStorage.clear()
- }
- }
- global.storage = Storage
声明全局global变量,只需在App.js页面一次引入、多个页面均可调用。
storage.set('hasLogin', { hasLogin: true })
storage.get('hasLogin', (err, object) => { ... })
◆ App主页面模板及全局引入组件
- import React, { Fragment, Component } from 'react'
- import { StatusBar } from 'react-native'
-
- // 引入公共js
- import './src/utils/util'
- import './src/utils/storage'
-
- // 导入样式
- import './src/assets/css/common'
- // 导入rnPop弹窗
- import './src/assets/js/rnPop/rnPop.js'
-
- // 引入页面路由
- import PageRouter from './src/router'
- class App extends Component{
- render(){
- return (
- <Fragment>
- {/* <StatusBar backgroundColor={GStyle.headerBackgroundColor} barStyle='light-content' /> */}
- {/* 页面 */}
- <PageRouter />
- {/* 弹窗模板 */}
- <RNPop />
- </Fragment>
- )
- }
- }
- export default App
◆ react-navigation页面导航器/地址路由、底部tabbar
由于react-navigation官方顶部导航器不能满足需求,如是自己封装了一个,功能效果有些类似微信导航。

- export default class HeaderBar extends Component {
- constructor(props){
- super(props)
- this.state = {
- searchInput: ''
- }
- }
- render() {
- /**
- * 更新
- * @param { navigation | 页面导航 }
- * @param { title | 标题 }
- * @param { center | 标题是否居中 }
- * @param { search | 是否显示搜索 }
- * @param { headerRight | 右侧Icon按钮 }
- */
- let{ navigation, title, bg, center, search, headerRight } = this.props
- return (
- <View style={GStyle.flex_col}>
- <StatusBar backgroundColor={bg ? bg : GStyle.headerBackgroundColor} barStyle='light-content' translucent={true} />
- <View style={[styles.rnim__topBar, GStyle.flex_row, {backgroundColor: bg ? bg : GStyle.headerBackgroundColor}]}>
- {/* 返回 */}
- <TouchableOpacity style={[styles.iconBack]} activeOpacity={.5} onPress={this.goBack}><Text style={[GStyle.iconfont, GStyle.c_fff, GStyle.fs_18]}></Text></TouchableOpacity>
- {/* 标题 */}
- { !search && center ? <View style={GStyle.flex1} /> : null }
- {
- search ?
- (
- <View style={[styles.barSearch, GStyle.flex1, GStyle.flex_row]}>
- <TextInput onChangeText={text=>{this.setState({searchInput: text})}} style={styles.barSearchText} placeholder='搜索' placeholderTextColor='rgba(255,255,255,.6)' />
- </View>
- )
- :
- (
- <View style={[styles.barTit, GStyle.flex1, GStyle.flex_row, center ? styles.barTitCenter : null]}>
- { title ? <Text style={[styles.barCell, {fontSize: 16, paddingLeft: 0}]}>{title}</Text> : null }
- </View>
- )
- }
- {/* 右侧 */}
- <View style={[styles.barBtn, GStyle.flex_row]}>
- {
- !headerRight ? null : headerRight.map((item, index) => {
- return(
- <TouchableOpacity style={[styles.iconItem]} activeOpacity={.5} key={index} onPress={()=>item.press ? item.press(this.state.searchInput) : null}>
- {
- item.type === 'iconfont' ? item.title : (
- typeof item.title === 'string' ?
- <Text style={item.style ? item.style : null}>{`${item.title}`}</Text>
- :
- <Image source={item.title} style={{width: 24, height: 24, resizeMode: 'contain'}} />
- )
- }
- {/* 圆点 */}
- { item.badge ? <View style={[styles.iconBadge, GStyle.badge]}><Text style={GStyle.badge_text}>{item.badge}</Text></View> : null }
- { item.badgeDot ? <View style={[styles.iconBadgeDot, GStyle.badge_dot]}></View> : null }
- </TouchableOpacity>
- )
- })
- }
- </View>
- </View>
- </View>
- )
- }
- goBack = () => {
- this.props.navigation.goBack()
- }
- }
- // 创建底部TabBar
- const tabNavigator = createBottomTabNavigator(
- // tabbar路由(消息、通讯录、我)
- {
- Index: {
- screen: Index,
- navigationOptions: ({navigation}) => ({
- tabBarLabel: '消息',
- tabBarIcon: ({focused, tintColor}) => (
- <View>
- <Text style={[ GStyle.iconfont, GStyle.fs_20, {color: (focused ? tintColor : '#999')} ]}></Text>
- <View style={[GStyle.badge, {position: 'absolute', top: -2, right: -15,}]}><Text style={GStyle.badge_text}>12</Text></View>
- </View>
- )
- })
- },
- Contact: {
- screen: Contact,
- navigationOptions: {
- tabBarLabel: '通讯录',
- tabBarIcon: ({focused, tintColor}) => (
- <View>
- <Text style={[ GStyle.iconfont, GStyle.fs_20, {color: (focused ? tintColor : '#999')} ]}></Text>
- </View>
- )
- }
- },
- Ucenter: {
- screen: Ucenter,
- navigationOptions: {
- tabBarLabel: '我',
- tabBarIcon: ({focused, tintColor}) => (
- <View>
- <Text style={[ GStyle.iconfont, GStyle.fs_20, {color: (focused ? tintColor : '#999')} ]}></Text>
- <View style={[GStyle.badge_dot, {position: 'absolute', top: -2, right: -6,}]}></View>
- </View>
- )
- }
- }
- },
- // tabbar配置
- {
- ...
- }
- )
◆ RN聊天页面功能模块
1、表情处理:原本是想着使用图片表情gif,可是在RN里面textInput文本框不能插入图片,只能通过定义一些特殊字符 :66: (:12 [奋斗] 解析表情,处理起来有些麻烦,而且图片多了影响性能,如是就改用emoj表情符。

- faceList: [
- {
- nodes: [
- '??','??','??','??','??','??','??',
- '??','??','??','??','??','??','??',
- '??','??','??','??','??','??','del',
- ]
- },
- ...
- {
- nodes: [
- '??','??','??','??','??','??','??',
- '??','??','??','??','??','????','????',
- '????','????','????','??????','??????','??????','del',
- ]
- },
- ...
- ]
2、光标定位:在指定光标处插入内容,textInput提供了光标起始位置
let selection = this.textInput._lastNativeSelection || null;
this.textInput.setNativeProps({
selection : { start : xxx, end : xxx}
})
3、textInput判断内容是否为空,过滤空格、回车
isEmpty = (html) => {
return html.replace(/\r\n|\n|\r/, "").replace(/(?:^[ \t\n\r]+)|(?:[ \t\n\r]+$)/g, "") == ""
}
- /**
- * 聊天模块JS----------------------------------------------------
- */
- // ...滚动至聊天底部
- scrollToBottom = (t) => {
- let that = this
- this._timer = setTimeout(() => {
- that.refs.scrollView.scrollToEnd({animated: false})
- }, t ? 16 : 0);
- }
- // ...隐藏键盘
- hideKeyboard = () => {
- Keyboard && Keyboard.dismiss()
- }
- // 点击表情
- handlePressEmotion = (img) => {
- if(img === 'del') return
- let selection = this.editorInput._lastNativeSelection || null;
- if (!selection){
- this.setState({
- editorText : this.state.editorText + `${img}`,
- lastRange: this.state.editorText.length
- })
- }
- else {
- let startStr = this.state.editorText.substr(0 , this.state.lastRange ? this.state.lastRange : selection.start)
- let endStr = this.state.editorText.substr(this.state.lastRange ? this.state.lastRange : selection.end)
- this.setState({
- editorText : startStr + `${img}` + endStr,
- lastRange: (startStr + `${img}`).length
- })
- }
- }
- // 发送消息
- isEmpty = (html) => {
- return html.replace(/\r\n|\n|\r/, "").replace(/(?:^[ \t\n\r]+)|(?:[ \t\n\r]+$)/g, "") == ""
- }
- handleSubmit = () => {
- // 判断是否为空值
- if(this.isEmpty(this.state.editorText)) return
- let _msg = this.state.__messageJson
- let _len = _msg.length
- // 消息队列
- let _data = {
- id: `msg${++_len}`,
- msgtype: 3,
- isme: true,
- avator: require('../../../assets/img/uimg/u__chat_img11.jpg'),
- author: '王梅(Fine)',
- msg: this.state.editorText,
- imgsrc: '',
- videosrc: ''
- }
- _msg = _msg.concat(_data)
- this.setState({ __messageJson: _msg, editorText: '' })
- this.scrollToBottom(true)
- }
- // >>> 【选择区功能模块】------------------------------------------
- // 选择图片
- handleLaunchImage = () => {
- let that = this
- ImagePicker.launchImageLibrary({
- // title: '请选择图片来源',
- // cancelButtonTitle: '取消',
- // takePhotoButtonTitle: '拍照',
- // chooseFromLibraryButtonTitle: '相册图片',
- // customButtons: [
- // {name: 'baidu', title: 'baidu.com图片'},
- // ],
- // cameraType: 'back',
- // mediaType: 'photo',
- // videoQuality: 'high',
- // maxWidth: 300,
- // maxHeight: 300,
- // quality: .8,
- // noData: true,
- storageOptions: {
- skipBackup: true,
- },
- }, (response) => {
- // console.log(response)
-
- if(response.didCancel){
- console.log('user cancelled')
- }else if(response.error){
- console.log('ImagePicker Error')
- }else{
- let source = { uri: response.uri }
- // let source = {uri: 'data:image/jpeg;base64,' + response.data}
- that.setState({ imgsrc: source })
- that.scrollToBottom(true)
- }
- })
- }
◆ 附上vue/react/angular聊天室IM实例
Vue网页版聊天室:https://www.cnblogs.com/xiaoyan2017/p/10793728.html
React版聊天室:https://www.cnblogs.com/xiaoyan2017/p/11106246.html
Angular聊天室:https://www.cnblogs.com/xiaoyan2017/p/11194828.html
