react-native聊天室|RN版聊天App仿微信实例|RN仿微信界面

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]}>&#xe63f;</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')} ]}>&#xe642;</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')} ]}>&#xe640;</Text>
                    </View>
                )
            }
        },
        Ucenter: {
            screen: Ucenter,
            navigationOptions: {
                tabBarLabel: '我',
                tabBarIcon: ({focused, tintColor}) => (
                    <View>
                        <Text style={[ GStyle.iconfont, GStyle.fs_20, {color: (focused ? tintColor : '#999')} ]}>&#xe61e;</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

 

posted @ 2019-09-01 03:13 xiaoyan2017 阅读(...) 评论(...) 编辑 收藏
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