
今天给大家分享的是 RN 聊天室项目,基于 react-native+react-navigation+react-redux+react-native-image-picker+rnPop 等技术实现高仿微信聊天 APP 界面,从搭建到开发完 前前后后发了两周左右吧,多半是晚上挤出时间来弄,开发过程采坑不少,好在 reactNative 社区比较完善,很多困难都在网上找到了解决方法。

{ "name": "RN_ChatRoom", "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" } } <View style={[GStyle.borT, GStyle.bg_45cff5, GStyle.mt_10]}></View> global.GStyle = { pixel: 1 / PixelRatio.get(), // 边框 borT: {borderTopWidth: 1 / PixelRatio.get(), borderTopColor: '#dedede',}, borB: {borderBottomWidth: 1 / PixelRatio.get(), borderBottomColor: '#dedede',}, /* __ 布局控制 */ align_l: {textAlign: 'left'}, align_c: {textAlign: 'center'}, align_r: {textAlign: 'right'}, pos_rel: {position: 'relative'}, pos_abs: {position: 'absolute'}, /* __ 颜色(背景、文字) */ bg_fff: {backgroundColor: '#fff'}, bg_45cff5: {backgroundColor: '#45cff5'}, c_fff: {color: '#fff'}, c_999: {color: '#999'}, c_45cff5: {color: '#45cff5'}, /* __ 字号 */ fs_14: {fontSize: 14}, fs_16: {fontSize: 16}, fs_20: {fontSize: 20}, fs_24: {fontSize: 24}, /* __ 字体 */ ff_ic: {fontFamily: 'iconfont'}, ff_ar: {fontFamily: 'arial'}, iconfont: {fontFamily: 'iconfont', fontSize: 16,}, /* __ 间距( 5/10/15/20/25/30/50 ) */ mt_10: {marginTop: 10}, mt_15: {marginTop: 15}, mt_20: {marginTop: 20}, mb_10: {marginBottom: 10}, mb_15: {marginBottom: 15}, mb_20: {marginBottom: 20}, /* __ 行高 */ lh_20: {lineHeight: 20}, lh_25: {lineHeight: 25}, lh_30: {lineHeight: 30}, lh_35: {lineHeight: 35}, lh_40: {lineHeight: 40}, flex1: {flex: 1}, flex2: {flex: 2}, flex_alignC: {alignItems: 'center'}, flex_alignT: {alignItems: 'flex-start'}, flex_alignB: {alignItems: 'flex-end'}, } 













reactNative 全屏启动页制作(隐藏状态栏,实现沉浸式) 只需把 StatusBar 设置为透明即可,这样状态栏和背景页面一体了。 <statusbar backgroundcolor="transparent" barstyle="light-content" translucent="{true}"></statusbar>
/** * @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); }) } } 
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() } } 由于 RN 提供的弹窗有时不能满足项目需求,这时就需要自己重新定制弹窗,不过依旧基于 Modal 来实现。 看看下面这个,自己开发的 rnPop 弹窗组件, 功能效果还不错~~ 支持多种调用方式,具体的可以去看看这篇文章介绍 https://www.cnblogs.com/xiaoyan2017/p/11292096.html

static defaultProps = { isVisible: false, //弹窗显示 title: '', //标题 content: '', //内容 style: null, //自定义弹窗样式 {object} contentStyle: null, //内容样式 skin: '', //自定义弹窗风格 icon: '', //自定义弹窗图标 shade: true, //遮罩层 shadeClose: true, //点击遮罩层关闭 opacity: '', //遮罩层透明度 time: 0, //弹窗自动关闭秒数 xtime: false, //显示关闭秒数 end: null, //销毁弹窗时回调函数 anim: 'scaleIn', //弹窗动画( scaleIn / fadeIn / top / bottom / left / right ) follow: null, //跟随定位(适用于在长按位置定位弹窗) position: '', //弹窗位置 btns: null, //弹窗按钮(不设置则不显示按钮)[{...options}, {...options}] }
在社交软件中,基本上都会有 emoji 表情功能。聊天中要显示文字和 emoji 表情的混排(下图所示),在原生 iOS 开发时,可以用富文本 NSAttributedString 实现,安卓中用 SpannableString 实现。当用到 React-Native 来开发这个功能的时候,貌似没有直接的现成的实现方案。 方法一: 通过特殊符处理,[高兴] (:88 类似这样的,处理起来比较麻烦,而且图片多了会影响页面性能。 具体实现方法可参考: https://www.jianshu.com/p/2331860db169 方法二: 使用 emoj 表情符,这种方式处理比较简单,网上很多表情符可用,而且不需要特殊处理,性能也还不错。如果要求不高,推荐这种方式。
faceList: [ { nodes: [ '','','','','','','', '','','''','','','', '','','','','','','del', ] }, { nodes: [ '','','','','','','', '','','','','','','', '','','','','','','del', ] }, { nodes: [ '','','','','','','', '','','','','','','', '','','','','','','del', ] }, ... ] 好了,以上就是今天的分享,希望以后能给大家分享更多知识。希望能喜欢
