我无法自动播放我的视频，请帮忙。我的sdk版本
android:minSdkVersion="14"
android:targetSdkVersion="19" />
我试图在代码中指定javascript：
public void onPageFinished(WebView view, String url) { webView.loadUrl("javascript:(function() { document.getElementsByTagName('video')[0].play(); })()"); }
});
我也试图在URL中附加自动播放但不工作//webView.loadUrl("http://youtube.com/embed/oY2OxMpCUVY?autoplay=1");
我的网页设置`
customViewContainer = (FrameLayout)rootView.findViewById(R.id.customViewContainer);
webView = (WebView) rootView.findViewById(R.id.HelpView_Video);
final GlobleClass globalVariable = (GlobleClass) GlobleClass.getContext();
mWebViewClient = new HelpWebViewClient();
webView.setWebViewClient(mWebViewClient);
mWebChromeClient = new myWebChromeClient();
webView.setWebChromeClient(mWebChromeClient);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setPluginState(PluginState.ON);
webView.setWebViewClient(new WebViewClient() {
// autoplay when finished loading via javascript injection
public void onPageFinished(WebView view, String url) { webView.loadUrl("javascript:(function() { document.getElementsByTagName('video')[0].play(); })()"); }
});
// if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
// webView.getSettings().setMediaPlaybackRequiresUserGesture(false);
// }
webView.getSettings().setAppCacheEnabled(true);
//webView.getSettings().setBuiltInZoomControls(true);
// webView.getSettings().setSaveFormData(true);
//webView.loadUrl("http://youtube.com/embed/oY2OxMpCUVY?autoplay=1");
webView.loadUrl(globalVariable.getHelpVideoUrl());
`
受到Orsi的answer的启发，我能够模仿显示视频播放器的WebView中心的onClick（）事件。这最终会自动播放视频，或者更确切地说，无需用户的互动。
private class AutoPlayVideoWebViewClient extends WebViewClient {
@Override
public void onPageFinished(WebView view, String url) {
super.onPageFinished(view, url);
// mimic onClick() event on the center of the WebView
long delta = 100;
long downTime = SystemClock.uptimeMillis();
float x = view.getLeft() + (view.getWidth()/2);
float y = view.getTop() + (view.getHeight()/2);
MotionEvent tapDownEvent = MotionEvent.obtain(downTime, downTime + delta, MotionEvent.ACTION_DOWN, x, y, 0);
tapDownEvent.setSource(InputDevice.SOURCE_CLASS_POINTER);
MotionEvent tapUpEvent = MotionEvent.obtain(downTime, downTime + delta + 2, MotionEvent.ACTION_UP, x, y, 0);
tapUpEvent.setSource(InputDevice.SOURCE_CLASS_POINTER);
view.dispatchTouchEvent(tapDownEvent);
view.dispatchTouchEvent(tapUpEvent);
}
}
某处，
myWebView.setWebViewClient(new AutoPlayVideoWebViewClient());
首先使用下面的代码：
webSettings.setMediaPlaybackRequiresUserGesture(false);
之后使用以下方法加载：
webView.loadDataWithBaseURL("https://www.youtube.com/", HTML.replace("CUSTOM_ID","YOUR_YOUTUBE_VIDEO_ID"), "text/html", "utf-8", null);
在HTML字符串下面使用YouTube API传递代码（替换了您的YouTube视频ID）
<!DOCTYPE html>
<html>
<style type="text/css">
html, body {
height: 100%;
width: 100%;
margin: 0;
padding: 0;
background-color: #000000;
overflow: hidden;
position: fixed;
}
</style>
<body>
<div id="player"></div>
<script>
var tag = document.createElement('script');
tag.src = "https://www.youtube.com/player_api";
var firstScriptTag = document.getElementsByTagName('script')[0];
firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
var player;
function onYouTubePlayerAPIReady() {
player = new YT.Player('player', {
height: '100%',
width: '100%',
videoId: 'CUSTOM_ID',
events: {
'onReady': onPlayerReady,
'onStateChange': onPlayerStateChange
},
playerVars: {
'autoplay': 0,
'showinfo': 1,
'controls': 1
}
});
}
function onPlayerReady(event) {
event.target.playVideo();
}
var done = false;
function onPlayerStateChange(event) {
if (event.data == YT.PlayerState.PLAYING && !done) {
done = true;
}
}
function stopVideo() {
player.stopVideo();
}
</script>
</body>
</html>
最后我做到了..你需要使用这个API在“OnReady”事件上播放视频：https://developers.google.com/youtube/iframe_api_reference#Getting_Started
加载包含此示例中的代码的页面。
并确保你有
webSettings.setMediaPlaybackRequiresUserGesture(false);
（API 16+）
您无法在webview上使用JavaScript进行自动播放。为了增强用户体验，WebKit禁用了在移动浏览器上自动播放视频的选项。
自动播放问题是一个已知问题，请看看我的答案here。
Bonnyz在他的回答here中发布的代码的C＃版本。以防有人需要它为Xamarin :)我测试它，它的工作原理。这是我发现在webview中自动播放youtube视频的唯一解决方案。
public class MyWebViewClient : WebViewClient
{
WebView webView;
MotionEvent motionEvent, motionEvent2;
public override void OnPageFinished(WebView view, string url)
{
long delta = 100;
long downTime = SystemClock.UptimeMillis();
float x = view.Left + view.Width / 2;
float y = view.Top + view.Height / 2;
webView = view;
motionEvent = MotionEvent.Obtain(downTime, downTime + delta, MotionEventActions.Down, x, y, 0);
motionEvent2 = MotionEvent.Obtain(downTime + delta + 1, downTime + delta * 2, MotionEventActions.Up, x, y, 0);
int delay = 100;
view.PostDelayed(TapDown, delay);
delay += 100;
view.PostDelayed(TapUp, delay);
}
private void TapDown()
{
webView.DispatchTouchEvent(motionEvent);
}
private void TapUp()
{
webView.DispatchTouchEvent(motionEvent2);
}
}
要使用它：
webView.SetWebViewClient(new MyWebViewClient());