问题
i am not able to autoplay my video please help in this. my sdk version
android:minSdkVersion="14"
android:targetSdkVersion="19" />
i tried to put java script as specifed in code:
public void onPageFinished(WebView view, String url) { webView.loadUrl("javascript:(function() { document.getElementsByTagName('video')[0].play(); })()"); }
});
i also try to append autoplay in URL but not working
//webView.loadUrl("http://youtube.com/embed/oY2OxMpCUVY?autoplay=1");
my web settings `
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());
`
回答1:
Inspired by Orsi's answer, I was able to mimic onClick() event on the center of the WebView that showed video player. This ultimately played the video automatically, or rather, without user's interaction.
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);
}
}
Somewhere,
myWebView.setWebViewClient(new AutoPlayVideoWebViewClient());
回答2:
First used below code :
webSettings.setMediaPlaybackRequiresUserGesture(false);
After that used below method for loading:
webView.loadDataWithBaseURL("https://www.youtube.com/", HTML.replace("CUSTOM_ID","YOUR_YOUTUBE_VIDEO_ID"), "text/html", "utf-8", null);
In HTML string pass below Code with YouTube API (Replaced your YouTube video 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>
回答3:
Finally I made it.. You need to use this API to play the video on "OnReady" event: https://developers.google.com/youtube/iframe_api_reference#Getting_Started
Load the page that contains the code from this example.
And make sure you have
webSettings.setMediaPlaybackRequiresUserGesture(false);
(API 16+)
回答4:
You can't do autoplay with JavaScript on the webview. In order to enhance user experience , WebKit disables the option to autoplay videos on mobile browsers.
回答5:
The autoplay issue is a known problem, please take a look to my answer here.
回答6:
The C# version of the code posted by bonnyz in his answer here. Just in case someone needs it for Xamarin :) I tested it and it works. It was the only solution I have found to autoplay youtube videos in a webview.
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);
}
}
To use it:
webView.SetWebViewClient(new MyWebViewClient());
来源：https://stackoverflow.com/questions/28039209/android-webview-youtube-embed-video-autoplay-not-working