audio自动播放完美兼容实现方案
前述:*近解决的一个疑难杂症,是关于audio自动播放与监听audio加载完成在ios上的兼容性问题,其表现为pc,安卓谷歌浏览器正常,ios微信,谷歌浏览器不正常。
需求:在音频加载前放置一个全局loading,音频加载完成后取消loading,并自动播放;项目为vue前端项目,兼容pc,移动端。
解决方案1(失败):
that.audioTimer=setTimeout(function(){
that.audioLoading = that.$loading({
lock: true,
text: ‘音频加载中…’,
spinner: ‘el-icon-loading’,
background: ‘rgba(0, 0, 0, 0.7)’
});
},200);
//兼容谷歌浏览器
audioElement.addEventListener(“progress”, function() {
//关闭loading并让audio.paly()
});
audioElement.addEventListener(“canplay”, function() {
//关闭loading并让audio.paly()
});
//兼容微信浏览器
document.addEventListener(“WeixinJSBridgeReady”, function () {
alert(“微信”)
//关闭loading并让audio.paly()
}, false)
问题在于addEventListener(“canplay”)与(“progress”)在ios微信浏览器不兼容,而在微信浏览器上类似上述的兼容微信浏览器代码根本难以实现,并且兼容这些浏览器需要写很多重复的代码,复用性不高;
解决方案2(成功):
思路,用全局自定义方法get请求替换监听音频加载是否完成方案;
*步,封装axios get方法
import axios from ‘axios’
import { Loading } from ‘element-ui’
const get = function(path, callback){
//配置路径
let fainalPath = path;
if(path.indexOf(“http”) < 0){
fainalPath = “http://” + Host + path;
}
//延时Loading
let getloadtimer = null;
let getloading = null;
getloadtimer = setTimeout(function(){
getloading = Loading.service({
lock: true,
text: ‘资源加载中…’,
spinner: ‘el-icon-loading’,
background: ‘rgba(0, 0, 0, 0.7)’
});
},200);
//网络不稳定Loading
let setIntvar = null;
let setIntvarnum = 0;
let netLoading = null;
setIntvar = setInterval(function(){
if(setIntvarnum>=10){
if(getloading != null) {
getloading.close();
}
netLoading = Loading.service({
lock: true,
text: ‘网络环境不稳定,请您刷新或者重新登录…’,
spinner: ‘el-icon-loading’,
background: ‘rgba(0, 0, 0, 0.7)’
});
}else {
setIntvarnum += 1
}
},1000);
//网络请求
axios.get(fainalPath
,{headers: {
‘Content-Type’:’application/json;charset=UTF-8′,
‘Accept’:’application/json’
}})
.then(function (response) {
closeAll(getloadtimer,setIntvar,getloading,netLoading);
callback(response)
})
.catch(function (error) {
closeAll(getloadtimer,setIntvar,getloading,netLoading);
if (error.response) {
console.log(error.response.data);
console.log(error.response.status);
tipError(error.response.data.code,error.response.status,path)
}
})
};
<audio id=”playButton” :src=”audioSrc” :autoplay=”autoplay” @ended=”audioEnd”></audio>
第二步:在vue页面中,监听数据变幻,并加载音频;
watch: {
‘response’: ‘renderData’
}
response是父组件传来的数据;renderData是子组件的数据初始化方法;在renderData里做下面的方法。
let audioSrc = “http://xxxx.com/测试.mp3”;
let audioElement = document.getElementById(‘playButton’);
api.get(audioSrc,function(response){
//audioElement.load();
audioElement.play();
})
第三步:当你点击音频时不需要重复加载,它会从cache里去拿;
choiceAudio (id) {
this.isEnded = ‘pause’;
let audioSrc = “http:/xxxx”+ id +”.mp3″;
document.getElementById(‘playButton’).setAttribute(‘src’, audioSrc);
document.getElementById(‘playButton’).load();
document.getElementById(‘playButton’).play();
},
总结:经过方案二,在pc,安卓,ios里都能正常运行,完美!