如何解决HTML5微信播放全屏问题

*{

            padding: 0;

            margin: 0;

        }

    #videobox{position: absolute;width: 100%;height: 100%;background-color: green;background-image: url(1.jpg);background-size: 100% 100%;background-position: top;overflow: hidden;}

    #videoALL{

  height: auto;

  position: absolute;

  width: 100%;

  top: 0;

  left: 0;

  object-fit: fill;

  display: block;

  background-size: cover;

  overflow: hidden;}

    #btn,#againbtn{width: 81px;height: 75px;position: absolute;top: 50%;left:50%;margin-top: -37.5px;margin-left: -40.5px;background-image: url(btn.png);background-size: 100% 100%;}

    #videoend{position: absolute;background-color: pink;display: none;background-image: url(2.jpg);background-size: cover;background-position: top;}

<script>

var videoALL = document.getElementById('videoALL'),

    videobox = document.getElementById('videobox'),

    btn = document.getElementById('btn'),

    videoend =  document.getElementById('videoend');

var clientWidth = document.documentElement.clientWidth;

var clientHeight = document.documentElement.clientHeight;

videoALL.style.width = clientWidth + 'px';

videoALL.style.height = 'auto';

document.addEventListener('touchmove', function(e){e.preventDefault()}, false);

function stylep(pId){

    pId.style.width = clientWidth + 'px';

    pId.style.height = clientHeight +200+ 'px';

}

stylep(videobox);

stylep(videoend);

var u = navigator.userAgent;

var isAndroid = u.indexOf('Android') > -1 || u.indexOf('Adr') > -1; //android终端

var isiOS = !!u.match(/\(i[^;]+;( U;)? CPU.+Mac OS X/); //ios终端

function playcontr(){

    if (isAndroid) {

       videoALL.style.width = window.screen.width + 'px';

       videoALL.style.height = window.screen.height + 'px';

    }

    videobox.style.display = "block";

    videoALL.play();

    btn.style.display = "none";

    videoend.style.display = "none";

};

videoALL.addEventListener('pause',function(){ 

    videoALL.style.width = clientWidth + 'px';

    btn.style.display = "block";

}) 

videoALL.addEventListener("ended",function(){

    videoALL.pause();

    videobox.style.display = "none";

    videoend.style.display = "block";

});

</script>