因此，我正在制作音乐播放器并使用react-native-video。对于我的输出，我可以播放将其添加到数据为App.js的{{1}}中的所有歌曲。但是当我按下前进按钮时，我可以更改歌曲，但不能随机播放音乐播放器。即使我打开它。我不是我的错，我不能让他们洗牌。
这是我的Track组件
Player这是我的import Controls from './Controls';
import Video from 'react-native-video';
export default class Player extends Component {
constructor(props) {
super(props);
this.state = {
paused: true,
totalLength: 1,
currentPosition: 0,
selectedTrack: 0,
repeatOn: false,
shuffleOn: true,
};
}
setDuration(data) {
// console.log(totalLength);
this.setState({totalLength: Math.floor(data.duration)});
}
setTime(data) {
//console.log(data);
this.setState({currentPosition: Math.floor(data.currentTime)});
}
seek(time) {
time = Math.round(time);
this.refs.audioElement && this.refs.audioElement.seek(time);
this.setState({
currentPosition: time,
paused: false,
});
}
onBack() {
if (this.state.currentPosition < 10 && this.state.selectedTrack > 0) {
this.refs.audioElement && this.refs.audioElement.seek(0);
this.setState({ isChanging: true });
setTimeout(() => this.setState({
currentPosition: 0,
paused: false,
totalLength: 1,
isChanging: false,
selectedTrack: this.state.selectedTrack - 1,
}), 0);
} else {
this.refs.audioElement.seek(0);
this.setState({
currentPosition: 0,
});
}
}
onForward() {
if (this.state.selectedTrack < this.props.tracks.length - 1) {
this.refs.audioElement && this.refs.audioElement.seek(0);
this.setState({ isChanging: true });
setTimeout(() => this.setState({
currentPosition: 0,
totalLength: 1,
paused: false,
isChanging: false,
selectedTrack: this.state.selectedTrack + 1,
}), 0);
}
}
render() {
const track = this.props.tracks[this.state.selectedTrack];
const video = this.state.isChanging ? null : (
<Video source={{uri: track.url}} // Can be a URL or a local file.
ref="audioElement"
paused={this.state.paused} // Pauses playback entirely.
resizeMode="cover" // Fill the whole screen at aspect ratio.
repeat={false} // Repeat forever.
onLoadStart={this.loadStart} // Callback when video starts to load
onLoad={this.setDuration.bind(this)} // Callback when video loads
onProgress={this.setTime.bind(this)} // Callback every ~250ms with currentTime
onEnd={this.onEnd} // Callback when playback finishes
onError={this.videoError} // Callback when video cannot be loaded
style={styles.audioElement} />
);
return (
<View style={styles.container}>
<Controls
onPressRepeat={() => this.setState({repeatOn : !this.state.repeatOn})}
repeatOn={this.state.repeatOn}
shuffleOn={this.state.shuffleOn}
forwardDisabled={this.state.selectedTrack === this.props.tracks.length - 1}
onPressShuffle={() => this.setState({shuffleOn: !this.state.shuffleOn})}
onPressPlay={() => this.setState({paused: false})}
onPressPause={() => this.setState({paused: true})}
onBack={this.onBack.bind(this)}
onForward={this.onForward.bind(this)}
paused={this.state.paused}/>
{video}
</View>
);
}
}
CSS这是我的const styles = {
container: {
flex: 1,
backgroundColor: 'rgb(4,4,4)',
},
audioElement: {
height: 0,
width: 0,
}
};
组件
App.js答案 0 :(得分：0)
如果您有autoPlay变量（我在redux中有该变量），则只需检查以下条件即可进行自动播放。
if(this.props.autoPlay){
if( this.state.currentPosition >= this.state.totalLength ){
this.onForward();
}
}