我有一个通用的视频包装器,我试图让它响应移动设备。我想做的是动态改变视口,这样视频就可以在任何方向上总是适合它。我以为这很简单,但我正在拔头发。只换风景
基本上,视频的高度和宽度是在页面顶部配置的,并将此信息传递给 JW 播放器,它会相应地制作 Flash 或 HTML5 视频播放器。我还使用此信息,结合客户端宽度和高度来尝试设置视口,以便页面的视频部分始终可以整齐地放入其中,而无需缩放。
我已经在我的 Android Galaxy S II 上完成了我想要的设置,但它在 iPhone 上看起来仍然一团糟。而且我必须手动设置一个缩放比例,我知道这并不能帮助我找到一个通用的解决方案。
这是我到目前为止的要点:
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width = device-width, height = device-height" id="mvp" />
<script>
/************ Bunch of player config stuff I've omitted *****************/
// These are the width and height of your player. For type "audio", the height is ignored. Default is 480x360.
var width = 480;
var height = 360;
</script>
<script type="text/javascript">
// Detect whether device supports orientationchange event, otherwise fall back to
// the resize event.
var supportsOrientationChange = "onorientationchange" in window, orientationEvent = supportsOrientationChange ? "orientationchange" : "resize";
window.addEventListener(orientationEvent, resizeView, false);
// see if the height or width of the player is greater than the viewport, if so, resize it
function resizeView() {
if (document.documentElement.clientWidth < width) {
mvp.setAttribute('content', 'width=' + width, + ', height = device-height');
}
if (document.documentElement.clientHeight < height) {
mvp.setAttribute('content','height=' + height + ', initial-scale=0.6666, maximum-scale=0.6666'); // scale hacks to make this at least do what I want on my Droid, doesn't look nice on iPhone
}
};
</script>
</head>
<body>
<h2 id="title">title</h2>
<div id="blurb">blah blah blah</div>
<div role="main">
<div id="mediaspace">
I'll be replaced by the JW Player
</div>
<script src="http://cdn.cengage.com/js/jwplayer/5.8/jwplayer.js" type="text/javascript">
</script>
<script src="player_mobile.js" type="text/javascript">
</script>
<script type="text/javascript">
resizeView();
</script>
</body>
</html>
也许 devicePixelRatio 会有所帮助?不确定!