setTimeout了也是duration还是0，奇怪的是另外一个小程序同样的代码，同样的环境是可以获取到的
var src ='share/static/voice/openauto.wav'
var innerAudioContext = wx.createInnerAudioContext()
innerAudioContext.autoplay = true
innerAudioContext.src = src
console.log(innerAudioContext.duration)；
innerAudioContext.onPlay(() => {
console.log('onPlay:开始播放');
});
innerAudioContext.onError((res) => {
console.log("onError:" + res.errMsg);
});
innerAudioContext.onCanplay(()=> {
innerAudioContext.duration;
setTimeout(() => {console.log(innerAudioContext.duration);}, 3000)
});
试试这么写
innerAudioContext.onCanplay(function get_duration() { if (innerAudioContext.duration) { // 做你想做的事情 console.log(innerAudioContext.duration) } else { setTimeout(get_duration, 0) } })const tempAudioContext = wx.createInnerAudioContext()
tempAudioContext .src = 'xxxxxx'
tempAudioContext.onPlay(function() {
console.log(tempAudioContext.duration)
tempAudioContext.stop()
})
tempAudioContext.volume = 0
tempAudioContext.play()
handleInitAudio(src: string) { const audioContext = wx.createInnerAudioContext(); innerAudioContextRef.current = audioContext; audioContext.src = src //解决真机无法获取音频时长，被迫用这么**的写法 audioContext.autoplay = false; const switchAudioPlay = setInterval(() => { audioContext.play(); audioContext.pause(); }, 100) audioContext.onPlay(() => { const getDuration = setInterval(() => { if (audioContext.duration > 0) { const durationStr = this.parseTime(audioContext.duration) this.setData({ durationStr, remainTimeStr: durationStr }) clearInterval(getDuration); clearInterval(switchAudioPlay); } }, 100) }) ... }实在不行，建议结合官方云服务，用node端第三方库计算音频的duration，我的音频因为本身就是在云函数里拿到的，所以直接用第三方nodejs库 music-metadata 算了一下再返回小程序端，这种计算还是服务端靠谱，客户端不同设备有各种坑