Videos not playing in fullscreen mode

Question

I am getting a NPE when trying to play embeded video in webview in FULLSCREEN. It is working fine with 3.0 honeycomb but not with ICS 4.0+. Any idea how this can be resolved?

java.lang.NullPointerException
    at android.webkit.PluginFullScreenHolder.show(PluginFullScreenHolder.java:85)
    at android.webkit.WebView$PrivateHandler.handleMessage(WebView.java:8849)
    at android.os.Handler.dispatchMessage(Handler.java:99)
    at android.os.Looper.loop(Looper.java:137)
    at android.app.ActivityThread.main(ActivityThread.java:4424)
    at java.lang.reflect.Method.invokeNative(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:511)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
    at dalvik.system.NativeStart.main(Native Method)

Any suggestion will be really appreciated. Thanks

Dulciana

If you get Java stacktrace it's Android bug. You may or may not have workaround, most likely not. Hopefully fixed in the future ICS releases. – Barley

Answer 1

Try adding a WebChromeClient to your WebView:

webView.setWebChromeClient(new WebChromeClient());

That should stop the crash (I think it's similar to what we were experiencing) but I don't think it will get the video to play in full screen.

To do that I think you will have to do something like this: Android ICS 4.0 Placing Flash WebView into full screen calls hideAll Method? Which I am still trying to figure out.

Dustproof

Answer 2

The problem is a bug in android OS. You need a work around to resolve this problem.
I was facing the same problem. The following work around worked for me.
Hope this will help some people:
Create the FullscreenableChromeClient and add this line:

WebView.setWebChromeClient( new FullscreenableChromeClient(this));

    public class FullscreenableChromeClient extends WebChromeClient {
        protected Activity mActivity = null;

        private View mCustomView;
        private WebChromeClient.CustomViewCallback mCustomViewCallback;
        private int mOriginalOrientation;

        private FrameLayout mContentView;
        private FrameLayout mFullscreenContainer;

        private static final FrameLayout.LayoutParams COVER_SCREEN_PARAMS = new FrameLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);

        public FullscreenableChromeClient(Activity activity) {
            this.mActivity = activity;
        }

        @Override
        public void onShowCustomView(View view, int requestedOrientation, WebChromeClient.CustomViewCallback callback) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.ICE_CREAM_SANDWICH) {
                if (mCustomView != null) {
                    callback.onCustomViewHidden();
                    return;
                }

                mOriginalOrientation = mActivity.getRequestedOrientation();
                FrameLayout decor = (FrameLayout) mActivity.getWindow().getDecorView();
                mFullscreenContainer = new FullscreenHolder(mActivity);
                mFullscreenContainer.addView(view, COVER_SCREEN_PARAMS);
                decor.addView(mFullscreenContainer, COVER_SCREEN_PARAMS);
                mCustomView = view;
                setFullscreen(true);
                mCustomViewCallback = callback;
                mActivity.setRequestedOrientation(requestedOrientation);
            }

            super.onShowCustomView(view, requestedOrientation, callback);
        }

        @Override
        public void onHideCustomView() {
            if (mCustomView == null) {
                return;
            }

            setFullscreen(false);
            FrameLayout decor = (FrameLayout) mActivity.getWindow().getDecorView();
            decor.removeView(mFullscreenContainer);
            mFullscreenContainer = null;
            mCustomView = null;
            mCustomViewCallback.onCustomViewHidden();
            mActivity.setRequestedOrientation(mOriginalOrientation);
        }

        private void setFullscreen(boolean enabled) {
            Window win = mActivity.getWindow();
            WindowManager.LayoutParams winParams = win.getAttributes();
            final int bits = WindowManager.LayoutParams.FLAG_FULLSCREEN;
            if (enabled) {
                winParams.flags |= bits;
            } else {
                winParams.flags &= ~bits;
                if (mCustomView != null) {
                    mCustomView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
                } else {
                    mContentView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
                }
            }
            win.setAttributes(winParams);
        }

        private static class FullscreenHolder extends FrameLayout {
            public FullscreenHolder(Context ctx) {
                super(ctx);
                setBackgroundColor(ctx.getResources().getColor(android.R.color.black));
            }

            @Override
            public boolean onTouchEvent(MotionEvent evt) {
            return true;
        }
    }
}

Apyretic