Playing HTML5 video on fullscreen in android webview

Question

Well  I ve been searching few days already  how to display HTML5 video in full-screen mode on android WebView   I managed to play HTML5 videos on my webview  Problems are arising when displaying video in fullscreen mode   As I figured out  android has two ways of handling the  lt  video   tag    On android versions  lt   2 3 3  the onShowCustomView method is fired  and I can have the VideoView instance  and set listeners when the video completes  set controllers etc  So far so good  On ICS  and probably 3 0 and above   it looks like the  lt  video   is handled in different way  When the HTML5 video is played the onShowCustomView isn t being called on normal mode - it looks like there is an internal business inside the WebView that plays the video  and all the controls that are defined in the  lt  video   tag are shown - I can t access it in any way  Actually  if the video is played in normal mode this is OK because the controls are there and are working    That led me to the big problem  when displaying the video in full screen mode the onShowCustomView is being called - but on ICS the  view  parameter isn t an instance of VideoView   I managed to find out that the instance is of VideoSurfaceView  a private inner class of HTML5VideoFullScreen class  The only way we can access this inner-class is via reflection   After looking at GrepCode for this class  I learnt that unlike VideoView  the HTML5VideoFullScreen VideoSurfaceView doesn t hold a MediaPlayer instance that I can listen to its events or access its controls  The only thing I can do is take this VideoSurfaceView as it is and put it inside a full-screen-layout without controlling it   Bottom line - When displaying video in full-screen  I don t know when the video ends  its controls aren t shown - this is pretty sad  I can t get the trigger for closing the full-screen   I tried few unsuccessful workarounds    Reflection  I tried to reach the HTML5VideoFullScreen instance  which holds a MediaPlayer member  from the inner-class VideoSurfaceView  I didn t manage to get it  I m not sure this is possible  ViewSurfaceView doesn t hold its owner s instance   Register for the video events via Javascript  onended  for example   and handle what I need back in JAVA via JavascriptInterface  I found this solution isn t reliable because while doing this I encountered another problem  the  lt  video   tag can be nested in an   The iframe source isn t mine and I can t get its content  getElementById or getElementsByTagName i  are nulls  - which means  I can t reach the  lt  video   element inside the iframe    I m still searching for a solution  very little is written about this issue  Did anyone manage to solve it  Help would be much appreciated   VideoView class  Here  has MediaPlayer   HTML5VideoFullScreen VideoSurfaceView class  Here  doesn t have MediaPlayer

User · Answer

This is great  But if you want your website links to open in the app itself  add this code in your ExampleActivity java   webView setWebViewClient new WebViewClient              Override         public boolean shouldOverrideUrlLoading WebView view  String url                if  Uri parse url  getHost   endsWith  yourwebsite com                      return false                             Intent intent   new Intent Intent ACTION VIEW  Uri parse url                view getContext   startActivity intent               return true

User · Answer

Thank you so much for that class  Cristian   I made a minor tweak to it so that the custom loading view is optional  like so      Override     public View getVideoLoadingProgressView      Video will start loading  only called in the case of VideoView  typically API level 10-                if  loadingView    null                        return super getVideoLoadingProgressView                      else                       loadingView setVisibility View VISIBLE               return loadingView                    I also added a new constructor that just takes two parameters  Anyway  just a minor simplification if you don t need the loading view  Thanks again for providing this

User · Answer

Just set     mWebView setWebChromeClient new WebChromeClient       and video plays as normally wont need any custom view

User · Answer

Edit  please see my other answer  as you probably don t need this now   As you said  in API levels 11  a HTML5VideoFullScreen VideoSurfaceView is passed  But I don t think you are right when you say that  it doens t have a MediaPlayer    This is the way to reach the MediaPlayer instance from the HTML5VideoFullScreen VideoSurfaceView instance using reflection    SuppressWarnings  rawtypes   Class c1   Class forName  android webkit HTML5VideoFullScreen VideoSurfaceView    Field f1   c1 getDeclaredField  this 0    f1 setAccessible true     SuppressWarnings  rawtypes   Class c2   f1 getType   getSuperclass    Field f2   c2 getDeclaredField  mPlayer    f2 setAccessible true    Object    html5VideoViewInstance   f1 get focusedChild      Look at the code in my other answer to this same question to see whats focusedChild  Object    mpInstance   f2 get    html5VideoViewInstance      This is the MediaPlayer instance    So  now you could set the onCompletion listener of the MediaPlayer instance like this   OnCompletionListener ocl   new OnCompletionListener          Override     public void onCompletion MediaPlayer mp                   Do stuff           Method m1   f2 getType   getMethod  setOnCompletionListener   new Class     Class forName  android media MediaPlayer OnCompletionListener       m1 invoke    mpInstance  ocl     The code doesn t fail but I m not completely sure if that onCompletion listener will really be called or if it could be useful to your situation  But just in case someone would like to try it

User · Answer

It seems that in lollipop and up  or maybe just a different WebView Version  that calling cprcrack s onHideCustomView   method does not work  It works if it is called from the exit fullscreen button but when you specifically call the method it will only exit fullscreen but the webView stays blank  A way around it is to simply add these lines of code to onHideCustomView     String js    javascript    js     var  ytrp html5 video   document getElementsByTagName  video   0     js      ytrp html5 video webkitExitFullscreen      webView loadUrl js     This will notify the webView that fullscreen has exited

User · Answer

Tested on Android 9 0 version  None of the answers worked for me   This is the final thing worked   import android annotation SuppressLint  import android content Context  import android graphics Bitmap  import android graphics BitmapFactory  import android net ConnectivityManager  import android net NetworkInfo  import android support v7 app AppCompatActivity  import android os Bundle  import android view View  import android webkit WebChromeClient  import android webkit WebSettings  import android webkit WebView  import android webkit WebViewClient  import android widget FrameLayout  import android widget ProgressBar   public class MainActivity extends AppCompatActivity        WebView mWebView         SuppressLint  SetJavaScriptEnabled        Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main             mWebView    WebView  findViewById R id webView             mWebView setWebViewClient new WebViewClient             mWebView setWebChromeClient new MyChrome             WebSettings webSettings   mWebView getSettings            webSettings setJavaScriptEnabled true           webSettings setAllowFileAccess true           webSettings setAppCacheEnabled true           if  savedInstanceState    null              mWebView loadUrl  https   www youtube com                           private class MyChrome extends WebChromeClient            private View mCustomView          private WebChromeClient CustomViewCallback mCustomViewCallback          protected FrameLayout mFullscreenContainer          private int mOriginalOrientation          private int mOriginalSystemUiVisibility           MyChrome               public Bitmap getDefaultVideoPoster                         if  mCustomView    null                    return null                            return BitmapFactory decodeResource getApplicationContext   getResources    2130837573                      public void onHideCustomView                           FrameLayout getWindow   getDecorView    removeView this mCustomView               this mCustomView   null              getWindow   getDecorView   setSystemUiVisibility this mOriginalSystemUiVisibility               setRequestedOrientation this mOriginalOrientation               this mCustomViewCallback onCustomViewHidden                this mCustomViewCallback   null                     public void onShowCustomView View paramView  WebChromeClient CustomViewCallback paramCustomViewCallback                        if  this mCustomView    null                                onHideCustomView                    return                            this mCustomView   paramView              this mOriginalSystemUiVisibility   getWindow   getDecorView   getSystemUiVisibility                this mOriginalOrientation   getRequestedOrientation                this mCustomViewCallback   paramCustomViewCallback                FrameLayout getWindow   getDecorView    addView this mCustomView  new FrameLayout LayoutParams -1  -1                getWindow   getDecorView   setSystemUiVisibility 3846   View SYSTEM UI FLAG LAYOUT STABLE                      Override     protected void onSaveInstanceState Bundle outState            super onSaveInstanceState outState           mWebView saveState outState               Override     protected void onRestoreInstanceState Bundle savedInstanceState            super onRestoreInstanceState savedInstanceState           mWebView restoreState savedInstanceState             In AndroidManifest xml   lt activity   android name   MainActivity    android configChanges  orientation screenSize    gt    Source Monster Techno

User · Answer

Cprcrack s answer works very well for API levels 19 and under   Just a minor addition to cprcrack s onShowCustomView will get it working on API level 21   if  Build VERSION SDK INT  gt   21          videoViewContainer setBackgroundColor Color BLACK           ViewGroup  webView getParent    addView videoViewContainer         webView scrollTo 0 0       centers full screen view    else         activityNonVideoView setVisibility View INVISIBLE         ViewGroup LayoutParams vg   new ViewGroup LayoutParams ViewGroup LayoutParams MATCH PARENT                      ViewGroup LayoutParams MATCH PARENT         activityVideoView addView videoViewContainer vg         activityVideoView setVisibility View VISIBLE       You will also need to reflect the changes in onHideCustomView

User · Answer

Edit 2014 10  by popular demand I m maintaining and moving this to GitHub  Please check cprcrack VideoEnabledWebView for the last version  Will keep this answer only for reference   Edit 2014 01  improved example usage to include the nonVideoLayout  videoLayout  and videoLoading views  for those users requesting more example code for better understading   Edit 2013 12  some bug fixes related to Sony Xperia devices compatibility  but which in fact affected all devices   Edit 2013 11  after the release of Android 4 4 KitKat  API level 19  with its new Chromium webview  I had to work hard again  Several improvements were made  You should update to this new version  I release this source under WTFPL   Edit 2013 04  after 1 week of hard work  I finally have achieved everything I needed  I think this two generic classes that I have created can solve all you problems   VideoEnabledWebChromeClient can be used alone if you do not require the functionality that VideoEnabledWebView adds  But VideoEnabledWebView must always rely on a VideoEnabledWebChromeClient  Please read all the comments of the both classes carefully   VideoEnabledWebChromeClient class  import android media MediaPlayer  import android media MediaPlayer OnCompletionListener  import android media MediaPlayer OnErrorListener  import android media MediaPlayer OnPreparedListener  import android view SurfaceView  import android view View  import android view ViewGroup  import android view ViewGroup LayoutParams  import android webkit WebChromeClient  import android widget FrameLayout          This class serves as a WebChromeClient to be set to a WebView  allowing it to play video     Video will play differently depending on target API level  in-line  fullscreen  or both         It has been tested with the following video classes     - android widget VideoView  typically API level  lt 11     - android webkit HTML5VideoFullScreen VideoSurfaceView VideoTextureView  typically API level 11-18     - com android org chromium content browser ContentVideoView VideoSurfaceView  typically API level 19          Important notes     - For API level 11   android hardwareAccelerated  true  must be set in the application manifest     - The invoking activity must call VideoEnabledWebChromeClient s onBackPressed   inside of its own onBackPressed       - Tested in Android API levels 8-19  Only tested on http   m youtube com         author Cristian Perez  http   cpr name         public class VideoEnabledWebChromeClient extends WebChromeClient implements OnPreparedListener  OnCompletionListener  OnErrorListener       public interface ToggledFullscreenCallback               public void toggledFullscreen boolean fullscreen              private View activityNonVideoView      private ViewGroup activityVideoView      private View loadingView      private VideoEnabledWebView webView       private boolean isVideoFullscreen     Indicates if the video is being displayed using a custom view  typically full-screen      private FrameLayout videoViewContainer      private CustomViewCallback videoViewCallback       private ToggledFullscreenCallback toggledFullscreenCallback                  Never use this constructor alone         This constructor allows this class to be defined as an inline inner class in which the user can override methods              SuppressWarnings  unused       public VideoEnabledWebChromeClient                               Builds a video enabled WebChromeClient          param activityNonVideoView A View in the activity s layout that contains every other view that should be hidden when the video goes full-screen          param activityVideoView A ViewGroup in the activity s layout that will display the video  Typically you would like this to fill the whole layout               SuppressWarnings  unused       public VideoEnabledWebChromeClient View activityNonVideoView  ViewGroup activityVideoView                this activityNonVideoView   activityNonVideoView          this activityVideoView   activityVideoView          this loadingView   null          this webView   null          this isVideoFullscreen   false                        Builds a video enabled WebChromeClient          param activityNonVideoView A View in the activity s layout that contains every other view that should be hidden when the video goes full-screen          param activityVideoView A ViewGroup in the activity s layout that will display the video  Typically you would like this to fill the whole layout          param loadingView A View to be shown while the video is loading  typically only used in API level  lt 11   Must be already inflated and without a parent view               SuppressWarnings  unused       public VideoEnabledWebChromeClient View activityNonVideoView  ViewGroup activityVideoView  View loadingView                this activityNonVideoView   activityNonVideoView          this activityVideoView   activityVideoView          this loadingView   loadingView          this webView   null          this isVideoFullscreen   false                        Builds a video enabled WebChromeClient          param activityNonVideoView A View in the activity s layout that contains every other view that should be hidden when the video goes full-screen          param activityVideoView A ViewGroup in the activity s layout that will display the video  Typically you would like this to fill the whole layout          param loadingView A View to be shown while the video is loading  typically only used in API level  lt 11   Must be already inflated and without a parent view          param webView The owner VideoEnabledWebView  Passing it will enable the VideoEnabledWebChromeClient to detect the HTML5 video ended event and exit full-screen         Note  The web page must only contain one video tag in order for the HTML5 video ended event to work  This could be improved if needed  see Javascript code               public VideoEnabledWebChromeClient View activityNonVideoView  ViewGroup activityVideoView  View loadingView  VideoEnabledWebView webView                this activityNonVideoView   activityNonVideoView          this activityVideoView   activityVideoView          this loadingView   loadingView          this webView   webView          this isVideoFullscreen   false                        Indicates if the video is being displayed using a custom view  typically full-screen          return true it the video is being displayed using a custom view  typically full-screen              public boolean isVideoFullscreen                 return isVideoFullscreen                        Set a callback that will be fired when the video starts or finishes displaying using a custom view  typically full-screen          param callback A VideoEnabledWebChromeClient ToggledFullscreenCallback callback             public void setOnToggledFullscreen ToggledFullscreenCallback callback                this toggledFullscreenCallback   callback              Override     public void onShowCustomView View view  CustomViewCallback callback                if  view instanceof FrameLayout                           A video wants to be shown             FrameLayout frameLayout    FrameLayout  view              View focusedChild   frameLayout getFocusedChild                    Save video related variables             this isVideoFullscreen   true              this videoViewContainer   frameLayout              this videoViewCallback   callback                  Hide the non-video view  add the video view  and show it             activityNonVideoView setVisibility View INVISIBLE               activityVideoView addView videoViewContainer  new LayoutParams LayoutParams MATCH PARENT  LayoutParams MATCH PARENT                activityVideoView setVisibility View VISIBLE                if  focusedChild instanceof android widget VideoView                                   android widget VideoView  typically API level  lt 11                  android widget VideoView videoView    android widget VideoView  focusedChild                      Handle all the required events                 videoView setOnPreparedListener this                   videoView setOnCompletionListener this                   videoView setOnErrorListener this                             else                                  Other classes  including                     - android webkit HTML5VideoFullScreen VideoSurfaceView  which inherits from android view SurfaceView  typically API level 11-18                     - android webkit HTML5VideoFullScreen VideoTextureView  which inherits from android view TextureView  typically API level 11-18                     - com android org chromium content browser ContentVideoView VideoSurfaceView  which inherits from android view SurfaceView  typically API level 19                       Handle HTML5 video ended event only if the class is a SurfaceView                    Test case  TextureView of Sony Xperia T API level 16 doesn t work fullscreen when loading the javascript below                 if  webView    null  amp  amp  webView getSettings   getJavaScriptEnabled    amp  amp  focusedChild instanceof SurfaceView                                           Run javascript code that detects the video end and notifies the Javascript interface                     String js    javascript                        js     var  ytrp html5 video last                        js     var  ytrp html5 video   document getElementsByTagName  video   0                         js     if   ytrp html5 video    undefined  amp  amp   ytrp html5 video     ytrp html5 video last                                                    js      ytrp html5 video last    ytrp html5 video                            js     function  ytrp html5 video ended                                                             js      VideoEnabledWebView notifyVideoEnd         Must match Javascript interface name and method of VideoEnableWebView                                                   js                                 js      ytrp html5 video addEventListener  ended    ytrp html5 video ended                                               js                             webView loadUrl js                                                   Notify full-screen change             if  toggledFullscreenCallback    null                                toggledFullscreenCallback toggledFullscreen true                                       Override  SuppressWarnings  deprecation       public void onShowCustomView View view  int requestedOrientation  CustomViewCallback callback     Available in API level 14   deprecated in API level 18                onShowCustomView view  callback               Override     public void onHideCustomView                    This method should be manually called on video end in all cases because it s not always called automatically             This method must be manually called on back key press  from this class  onBackPressed   method            if  isVideoFullscreen                           Hide the video view  remove it  and show the non-video view             activityVideoView setVisibility View INVISIBLE               activityVideoView removeView videoViewContainer               activityNonVideoView setVisibility View VISIBLE                   Call back  only in API level  lt 19  because in API level 19  with chromium webview it crashes              if  videoViewCallback    null  amp  amp   videoViewCallback getClass   getName   contains   chromium                                   videoViewCallback onCustomViewHidden                                  Reset video related variables             isVideoFullscreen   false              videoViewContainer   null              videoViewCallback   null                  Notify full-screen change             if  toggledFullscreenCallback    null                                toggledFullscreenCallback toggledFullscreen false                                       Override     public View getVideoLoadingProgressView      Video will start loading               if  loadingView    null                        loadingView setVisibility View VISIBLE               return loadingView                    else                       return super getVideoLoadingProgressView                          Override     public void onPrepared MediaPlayer mp     Video will start playing  only called in the case of android widget VideoView  typically API level  lt 11                if  loadingView    null                        loadingView setVisibility View GONE                         Override     public void onCompletion MediaPlayer mp     Video finished playing  only called in the case of android widget VideoView  typically API level  lt 11                onHideCustomView                Override     public boolean onError MediaPlayer mp  int what  int extra     Error while playing video  only called in the case of android widget VideoView  typically API level  lt 11                return false     By returning false  onCompletion   will be called                       Notifies the class that the back key has been pressed by the user         This must be called from the Activity s onBackPressed    and if it returns false  the activity itself should handle it  Otherwise don t do anything          return Returns true if the event was handled  and false if was not  video view is not visible              public boolean onBackPressed                 if  isVideoFullscreen                        onHideCustomView                return true                    else                       return false                       VideoEnabledWebView class  import android annotation SuppressLint  import android content Context  import android os Handler  import android os Looper  import android util AttributeSet  import android webkit WebChromeClient  import android webkit WebView   import java util Map          This class serves as a WebView to be used in conjunction with a VideoEnabledWebChromeClient     It makes possible     - To detect the HTML5 video ended event so that the VideoEnabledWebChromeClient can exit full-screen         Important notes     - Javascript is enabled by default and must not be disabled with getSettings   setJavaScriptEnabled false      - setWebChromeClient   must be called before any loadData    loadDataWithBaseURL   or loadUrl   method         author Cristian Perez  http   cpr name         public class VideoEnabledWebView extends WebView       public class JavascriptInterface                android webkit JavascriptInterface         public void notifyVideoEnd      Must match Javascript interface method of VideoEnabledWebChromeClient                          This code is not executed in the UI thread  so we must force that to happen             new Handler Looper getMainLooper    post new Runnable                                  Override                 public void run                                         if  videoEnabledWebChromeClient    null                                                videoEnabledWebChromeClient onHideCustomView                                                                                 private VideoEnabledWebChromeClient videoEnabledWebChromeClient      private boolean addedJavascriptInterface       public VideoEnabledWebView Context context                super context           addedJavascriptInterface   false              SuppressWarnings  unused       public VideoEnabledWebView Context context  AttributeSet attrs                super context  attrs           addedJavascriptInterface   false              SuppressWarnings  unused       public VideoEnabledWebView Context context  AttributeSet attrs  int defStyle                super context  attrs  defStyle           addedJavascriptInterface   false                        Indicates if the video is being displayed using a custom view  typically full-screen          return true it the video is being displayed using a custom view  typically full-screen              public boolean isVideoFullscreen                 return videoEnabledWebChromeClient    null  amp  amp  videoEnabledWebChromeClient isVideoFullscreen                          Pass only a VideoEnabledWebChromeClient instance               Override  SuppressLint  SetJavaScriptEnabled       public void setWebChromeClient WebChromeClient client                getSettings   setJavaScriptEnabled true            if  client instanceof VideoEnabledWebChromeClient                        this videoEnabledWebChromeClient    VideoEnabledWebChromeClient  client                     super setWebChromeClient client               Override     public void loadData String data  String mimeType  String encoding                addJavascriptInterface            super loadData data  mimeType  encoding               Override     public void loadDataWithBaseURL String baseUrl  String data  String mimeType  String encoding  String historyUrl                addJavascriptInterface            super loadDataWithBaseURL baseUrl  data  mimeType  encoding  historyUrl               Override     public void loadUrl String url                addJavascriptInterface            super loadUrl url               Override     public void loadUrl String url  Map lt String  String gt  additionalHttpHeaders                addJavascriptInterface            super loadUrl url  additionalHttpHeaders              private void addJavascriptInterface                 if   addedJavascriptInterface                           Add javascript interface to be called when the video ends  must be done before page load              addJavascriptInterface new JavascriptInterface      VideoEnabledWebView       Must match Javascript interface name of VideoEnabledWebChromeClient              addedJavascriptInterface   true                       Example usage   Main layout activity main xml in which we put a VideoEnabledWebView and other used views    lt RelativeLayout     xmlns android  http   schemas android com apk res android      xmlns tools  http   schemas android com tools      android layout width  match parent      android layout height  match parent      tools context   MainActivity   gt        lt  -- View that will be hidden when video goes fullscreen -- gt       lt RelativeLayout         android id    id nonVideoLayout          android layout width  match parent          android layout height  match parent   gt            lt your package VideoEnabledWebView             android id    id webView              android layout width  match parent              android layout height  match parent    gt        lt  RelativeLayout gt           lt  -- View where the video will be shown when video goes fullscreen -- gt       lt RelativeLayout         android id    id videoLayout          android layout width  match parent          android layout height  match parent   gt            lt  -- View that will be shown while the fullscreen video loads  maybe include a spinner and a  Loading     message  -- gt           lt View             android id    id videoLoading              android layout width  wrap content              android layout height  wrap content              android layout centerInParent  true              android visibility  invisible    gt        lt  RelativeLayout gt    lt  RelativeLayout gt    Activity s onCreate    in which we initialize it   private VideoEnabledWebView webView  private VideoEnabledWebChromeClient webChromeClient    Override protected void onCreate Bundle savedInstanceState        super onCreate savedInstanceState           Set layout     setContentView R layout activity main           Save the web view     webView    VideoEnabledWebView  findViewById R id webView           Initialize the VideoEnabledWebChromeClient and set event handlers     View nonVideoLayout   findViewById R id nonVideoLayout      Your own view  read class comments     ViewGroup videoLayout    ViewGroup  findViewById R id videoLayout      Your own view  read class comments     View loadingView   getLayoutInflater   inflate R layout view loading video  null      Your own view  read class comments     webChromeClient   new VideoEnabledWebChromeClient nonVideoLayout  videoLayout  loadingView  webView     See all available constructors                     Subscribe to standard events  such as onProgressChanged               Override         public void onProgressChanged WebView view  int progress                           Your code                         webChromeClient setOnToggledFullscreen new VideoEnabledWebChromeClient ToggledFullscreenCallback                  Override         public void toggledFullscreen boolean fullscreen                           Your code to handle the full-screen change  for example showing and hiding the title bar  Example              if  fullscreen                                WindowManager LayoutParams attrs   getWindow   getAttributes                    attrs flags    WindowManager LayoutParams FLAG FULLSCREEN                  attrs flags    WindowManager LayoutParams FLAG KEEP SCREEN ON                  getWindow   setAttributes attrs                   if  android os Build VERSION SDK INT  gt   14                                        getWindow   getDecorView   setSystemUiVisibility View SYSTEM UI FLAG LOW PROFILE                                               else                               WindowManager LayoutParams attrs   getWindow   getAttributes                    attrs flags  amp    WindowManager LayoutParams FLAG FULLSCREEN                  attrs flags  amp    WindowManager LayoutParams FLAG KEEP SCREEN ON                  getWindow   setAttributes attrs                   if  android os Build VERSION SDK INT  gt   14                                        getWindow   getDecorView   setSystemUiVisibility View SYSTEM UI FLAG VISIBLE                                                          webView setWebChromeClient webChromeClient           Navigate everywhere you want  this classes have only been tested on YouTube s mobile site     webView loadUrl  http   m youtube com        And don t forget to call onBackPressed      Override public void onBackPressed            Notify the VideoEnabledWebChromeClient  and handle it ourselves if it doesn t handle it     if   webChromeClient onBackPressed                  if  webView canGoBack                          webView goBack                      else                          Close app  presumably              super onBackPressed

[android] Playing HTML5 video on fullscreen in android webview

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