我有一个 html5 的 js 音频播放器。在 iPhone 上的浏览器（任何）中在后台播放音乐时，曲目不会自动切换。
我的js音频播放器：
function createTrackItem(index,name,duration){
var trackItem = document.createElement('div');
trackItem.setAttribute("class", "playlist-track-ctn");
trackItem.setAttribute("id", "ptc-"+index);
trackItem.setAttribute("data-index", index);
document.querySelector(".playlist-ctn").appendChild(trackItem);
var playBtnItem = document.createElement('div');
playBtnItem.setAttribute("class", "playlist-btn-play");
playBtnItem.setAttribute("id", "pbp-"+index);
document.querySelector("#ptc-"+index).appendChild(playBtnItem);
var btnImg = document.createElement('i');
btnImg.setAttribute("class", "fas fa-play");
btnImg.setAttribute("height", "40");
btnImg.setAttribute("width", "40");
btnImg.setAttribute("id", "p-img-"+index);
document.querySelector("#pbp-"+index).appendChild(btnImg);
var trackInfoItem = document.createElement('div');
trackInfoItem.setAttribute("class", "playlist-info-track");
trackInfoItem.innerHTML = name
document.querySelector("#ptc-"+index).appendChild(trackInfoItem);
var trackDurationItem = document.createElement('div');
trackDurationItem.setAttribute("class", "playlist-duration");
trackDurationItem.innerHTML = duration
document.querySelector("#ptc-"+index).appendChild(trackDurationItem);
}
for (var i = 0; i < listAudio.length; i++) {
createTrackItem(i,listAudio[i].name,listAudio[i].duration);
}
var indexAudio = 0;
function loadNewTrack(index){
var player = document.querySelector('#source-audio')
player.src = listAudio[index].file
document.querySelector('.title').innerHTML = listAudio[index].name
document.title = listAudio[index].name
this.currentAudio = document.getElementById("myAudio");
this.currentAudio.load()
this.toggleAudio()
this.updateStylePlaylist(this.indexAudio,index)
this.indexAudio = index;
}
var playListItems = document.querySelectorAll(".playlist-track-ctn");
for (let i = 0; i < playListItems.length; i++){
playListItems[i].addEventListener("click", getClickedElement.bind(this));
}
function getClickedElement(event) {
for (let i = 0; i < playListItems.length; i++){
if(playListItems[i] == event.target){
var clickedIndex = event.target.getAttribute("data-index")
if (clickedIndex == this.indexAudio ) { // alert('Same audio');
this.toggleAudio()
}else{
loadNewTrack(clickedIndex);
}
}
}
}
document.querySelector('#source-audio').src = listAudio[indexAudio].file
document.querySelector('.title').innerHTML = listAudio[indexAudio].name
var currentAudio = document.getElementById("myAudio");
currentAudio.load()
currentAudio.onloadedmetadata = function() {
document.getElementsByClassName('duration')[0].innerHTML = this.getMinutes(this.currentAudio.duration)
}.bind(this);
var interval1;
function toggleAudio() {
if (this.currentAudio.paused) {
document.querySelector('#icon-play').style.display = 'none';
document.querySelector('#icon-pause').style.display = 'block';
document.querySelector('#ptc-'+this.indexAudio).classList.add("active-track");
this.playToPause(this.indexAudio)
this.currentAudio.play();
}else{
document.querySelector('#icon-play').style.display = 'block';
document.querySelector('#icon-pause').style.display = 'none';
this.pauseToPlay(this.indexAudio)
this.currentAudio.pause();
}
}
function pauseAudio() {
this.currentAudio.pause();
clearInterval(interval1);
}
var timer = document.getElementsByClassName('timer')[0]
var barProgress = document.getElementById("myBar");
var width = 0;
function onTimeUpdate() {
var t = this.currentAudio.currentTime
timer.innerHTML = this.getMinutes(t);
this.setBarProgress();
if (this.currentAudio.ended) {
document.querySelector('#icon-play').style.display = 'block';
document.querySelector('#icon-pause').style.display = 'none';
this.pauseToPlay(this.indexAudio)
if (this.indexAudio < listAudio.length-1) {
var index = parseInt(this.indexAudio)+1
this.loadNewTrack(index)
}
}
}
function setBarProgress(){
var progress = (this.currentAudio.currentTime/this.currentAudio.duration)*100;
document.getElementById("myBar").style.width = progress + "%";
}
function getMinutes(t){
var min = parseInt(parseInt(t)/60);
var sec = parseInt(t%60);
if (sec < 10) {
sec = "0"+sec
}
if (min < 10) {
min = "0"+min
}
return min+":"+sec
}
var progressbar = document.querySelector('#myProgress')
progressbar.addEventListener("click", seek.bind(this));
function seek(event) {
var percent = event.offsetX / progressbar.offsetWidth;
this.currentAudio.currentTime = percent * this.currentAudio.duration;
barProgress.style.width = percent*100 + "%";
}
function forward(){
this.currentAudio.currentTime = this.currentAudio.currentTime + 5
this.setBarProgress();
}
function rewind(){
this.currentAudio.currentTime = this.currentAudio.currentTime - 5
this.setBarProgress();
}
function next(){
if (this.indexAudio <listAudio.length-1) {
var oldIndex = this.indexAudio
this.indexAudio++;
updateStylePlaylist(oldIndex,this.indexAudio)
this.loadNewTrack(this.indexAudio);
}
}
function previous(){
if (this.indexAudio>0) {
var oldIndex = this.indexAudio
this.indexAudio--;
updateStylePlaylist(oldIndex,this.indexAudio)
this.loadNewTrack(this.indexAudio);
}
}
function updateStylePlaylist(oldIndex,newIndex){
document.querySelector('#ptc-'+oldIndex).classList.remove("active-track");
this.pauseToPlay(oldIndex);
document.querySelector('#ptc-'+newIndex).classList.add("active-track");
this.playToPause(newIndex)
}
function playToPause(index){
var ele = document.querySelector('#p-img-'+index)
ele.classList.remove("fa-play");
ele.classList.add("fa-pause");
}
function pauseToPlay(index){
var ele = document.querySelector('#p-img-'+index)
ele.classList.remove("fa-pause");
ele.classList.add("fa-play");
}
function toggleMute(){
var btnMute = document.querySelector('#toggleMute');
var volUp = document.querySelector('#icon-vol-up');
var volMute = document.querySelector('#icon-vol-mute');
if (this.currentAudio.muted == false) {
this.currentAudio.muted = true
volUp.style.display = "none"
volMute.style.display = "block"
}else{
this.currentAudio.muted = false
volMute.style.display = "none"
volUp.style.display = "block"
}
}
我尝试在 Android 11 上自动切换曲目并在后台运行音乐。我正在寻找有关 safari 和 js 的具体信息
有同样的问题。你找到解决办法了吗？