一、所需要的第三方库:
yarn add react-native-vector-icons react-native-video
package.json
{
"name": "myReactNative",
"version": "0.0.1",
"private": true,
"scripts": {
"android": "react-native run-android",
"ios": "react-native run-ios",
"start": "react-native start",
"test": "jest",
"lint": "eslint ."
},
"dependencies": {
"react": "17.0.1",
"react-native": "0.64.1",
"react-native-vector-icons": "^8.1.0",
"react-native-video": "^5.1.1"
},
"devDependencies": {
"@babel/core": "^7.12.9",
"@babel/runtime": "^7.12.5",
"@react-native-community/eslint-config": "^2.0.0",
"babel-jest": "^26.6.3",
"eslint": "7.14.0",
"jest": "^26.6.3",
"metro-react-native-babel-preset": "^0.64.0",
"react-test-renderer": "17.0.1"
},
"jest": {
"preset": "react-native"
}
}
二、示例代码:
import React, { Component } from 'react'
import { View,Animated,StyleSheet,TouchableHighlight } from 'react-native'
import { linear } from 'react-native/Libraries/Animated/Easing'
import Entypo from 'react-native-vector-icons/Entypo'
import Video from 'react-native-video'
//音乐和图像的部分,可以根据情况进行更换
let uri="http://39.100.242.209/cafe/ice.jpeg"
let musicUri="http://39.100.242.209/mp3/"
let music=['yong.mp3','skycity.mp3','我.mp3']
export default class App extends Component {
state={rotate:new Animated.Value(0),paused:true,index:0}
currentRotate=0
componentDidMount(){
//获取动画的当前值
this.state.rotate.addListener(({value})=>{this.currentRotate=value})
}
_play=()=>{
//toValue每次启动时,在当前值的基础上增加360的补偿
let an=Animated.loop(Animated.timing(this.state.rotate,
{useNativeDriver:true,duration:5000,toValue:this.currentRotate+360,easing:linear}))
let paused=this.state.paused
if(paused) an.start()
else an.stop()
this.setState({paused:!paused})
}
render() {
//利用插值方法进行映射
let style={transform:[{rotate:this.state.rotate.interpolate({
inputRange:[0,360],outputRange:['0deg','360deg']
})}]}
return (
<View style={{flex:1,backgroundColor:'antiquewhite',alignItems:'center'}}>
<Video paused={this.state.paused}
source={{uri:musicUri+music[this.state.index]}}/>
<View style={{flex:1,justifyContent:'center',alignItems:'center'}}>
<Animated.Image style={[styles.disc,style]} source={{uri:uri}}/>
</View>
<TouchableHighlight style={styles.btn} onPress={this._play} >
<Entypo name={this.state.paused?"controller-play":"controller-paus"} size={60} color={"blue"}/>
</TouchableHighlight>
</View>
)
}
}
const styles = StyleSheet.create({
disc:{width:400,height:400,borderRadius:200},
btn:{justifyContent:'center',alignItems:'center'
,width:90,height:90,borderRadius:45,borderBottomColor:'blue',borderWidth:1}
})