Android 4.0 about html5webview HOT 6 OPEN

That method wasn't called when I've tried to open youtube video.
Sound is playing fine but it shows black screen instead of video

[deleted comment]

I am facing the exact same issue i am trying to load a url which has youtube 
video embedded using iframe. I have added hardwareacceleration as true in 
manifest file.
I am only able to hear sound and i see a black screen.

The onShowCustomView and getVideoLoadingProgressView do not get called
and this is what i see in the logcat when the video is loaded.

07-05 18:45:29.790: E/libEGL(1143): call to OpenGL ES API with no current 
context (logged once per thread)
07-05 18:45:29.800: D/MediaPlayer(1143): Couldn't open file on client side, 
trying server side
07-05 18:45:30.079: E/libEGL(1143): call to OpenGL ES API with no current 
context (logged once per thread)
07-05 18:45:30.079: D/ShaderProgram(1143): couldn't load the vertex shader!
07-05 18:45:30.079: E/libEGL(1143): call to OpenGL ES API with no current 
context (logged once per thread)
07-05 18:45:30.079: D/ShaderProgram(1143): couldn't load the vertex shader!
07-05 18:45:30.079: E/libEGL(1143): call to OpenGL ES API with no current 
context (logged once per thread)
07-05 18:45:30.079: D/ShaderProgram(1143): couldn't load the vertex shader!
07-05 18:45:30.079: E/libEGL(1143): call to OpenGL ES API with no current 
context (logged once per thread)
07-05 18:45:30.079: D/ShaderProgram(1143): couldn't load the vertex shader!
07-05 18:45:30.079: E/libEGL(1143): call to OpenGL ES API with no current 
context (logged once per thread)
07-05 18:45:30.079: D/ShaderProgram(1143): couldn't load the vertex shader!

NOTE: This works perfectly fine on android gingerbread
Can anyone help me out on this?

I also tried the new method onShowCustomView(View view, int 
requestedOrientation, WebChromeClient.CustomViewCallback callback)
as suggested in the first comment but it is not working

Write this code in onBackPressed() or in onPause()

Class.forName("com.***.HTML5WebView").getMethod("onPause", (Class[]) 
null).invoke(html5WebView, (Object[]) null);

It worked for me in 4.2

I think adding  android:hardwareAccelerate="true" to manifest file will solve 
most of your problems. For <iframe>, simple solution is to change 
shouldOverrideUrlLoading() to always return false.

You can try to set an user agent to the webView it works for me on ICS like 
this:
String ua = "Mozilla/5.0 (Android; Tablet; rv:20.0) Gecko/20.0 Firefox/20.0";

WebSettings s = getSettings();
s.setUserAgentString(ua);

if it don't work look at this link for other user agents:
http://android-er.blogspot.com/2013/05/set-user-agent-string-of-webview.html

Good luck