Unable to Full Screen Youtube Video Inside Custom Webview

问题

Update

I have updated my question to hide confidential code.

If still there is some confusion pls msg me in comments.

Question

I have written an custom Webview for playing youtube video embedded in my website to go full Screen.

But its still not Working.. . kindly Help

   public class MainActivity extends Activity  implements OnClickListener {

          final Context context = this;
        private WebView webView;
         private ImageButton btnrefresh;    
         private TextView txtrefresh;
           private myWebChromeClient mWebChromeClient;
         private Menu optionsMenu;
         private WebChromeClient.CustomViewCallback customViewCallback;
            private View mCustomView;       
            private FrameLayout customViewContainer;


        @SuppressWarnings("deprecation")
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);

            //Tushar
              customViewContainer = (FrameLayout) findViewById(R.id.customViewContainer);
            //Tushar
            //define button 
            btnrefresh = (ImageButton) findViewById(R.id.imageButton1);

            btnrefresh.setOnClickListener(this);
            btnrefresh.setVisibility(View.GONE);

            //define textView
            txtrefresh = (TextView)findViewById((R.id.textView1));
            txtrefresh.setVisibility(View.GONE);


            if(isConnected())
            {

                webView = (WebView) findViewById(R.id.webView1);
                webView.getSettings().setJavaScriptEnabled(true);       
                   webView.getSettings().setAppCacheEnabled(true);

                    webView.getSettings().setRenderPriority(RenderPriority.HIGH);
                    webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);
                    webView.getSettings().setSaveFormData(true);
            //  webView.getSettings().setPluginState(PluginState.ON);
              webView.setWebViewClient(new WebViewClient()
              {
              @Override
              public boolean shouldOverrideUrlLoading(WebView view, String url) {


                  if (url.startsWith("mailto:")) {
                      sendEmail(url.substring(7));
                      return true;
                  }

                  return false;
              }

            });


                initWebView(webView);                         
                webView.loadUrl("http://Example.com/");             

                }


            else
            {

            RelativeLayout rel = (RelativeLayout)findViewById(R.id.relativelayout1);
            rel.setOnClickListener(new View.OnClickListener(){
               @Override
               public void onClick(View v){
                 refresh();
               }
           });
                btnrefresh.setVisibility(View.VISIBLE); 
                txtrefresh.setVisibility(View.VISIBLE);
                Toast.makeText(getBaseContext(), "No Internet Connection !!", Toast.LENGTH_SHORT).show();


            }       
        }

        public boolean inCustomView() {
            return (mCustomView != null);
        }

        public void hideCustomView() {
            mWebChromeClient.onHideCustomView();
        }

        @Override
        protected void onPause() {
            super.onPause();    //To change body of overridden methods use File | Settings | File Templates.
            webView.onPause();
        }

        @Override
        protected void onResume() {
            super.onResume();    //To change body of overridden methods use File | Settings | File Templates.
            webView.onResume();
        }

        @Override
        protected void onStop() {
            super.onStop();    //To change body of overridden methods use File | Settings | File Templates.
            if (inCustomView()) {
                hideCustomView();
            }
        }

        //tushar
        class myWebChromeClient extends WebChromeClient {
            private Bitmap mDefaultVideoPoster;
            private View mVideoProgressView;

            @Override
            public void onShowCustomView(View view, int requestedOrientation, CustomViewCallback callback) {
               onShowCustomView(view, callback);    //To change body of overridden methods use File | Settings | File Templates.
            }

            @Override
            public void onShowCustomView(View view,CustomViewCallback callback) {

                // if a view already exists then immediately terminate the new one
                if (mCustomView != null) {
                    callback.onCustomViewHidden();
                    return;
                }
                mCustomView = view;
                webView.setVisibility(View.GONE);
                customViewContainer.setVisibility(View.VISIBLE);
                customViewContainer.addView(view);
                customViewCallback = callback;
            }

            @Override
            public View getVideoLoadingProgressView() {

                if (mVideoProgressView == null) {
                    LayoutInflater inflater = LayoutInflater.from(MainActivity.this);
                    mVideoProgressView = inflater.inflate(R.layout.video_progress, null);
                }
                return mVideoProgressView;
            }

            @Override
            public void onHideCustomView() {
                super.onHideCustomView();    //To change body of overridden methods use File | Settings | File Templates.
                if (mCustomView == null)
                    return;

                webView.setVisibility(View.VISIBLE);
                customViewContainer.setVisibility(View.GONE);

                // Hide the custom view.
                mCustomView.setVisibility(View.GONE);

                // Remove the custom view from its container.
                customViewContainer.removeView(mCustomView);
                customViewCallback.onCustomViewHidden();

                mCustomView = null;
            }
        }

回答1:

To achieve this you should:

1. Implement showCustomView and hideCustomView methods of WebChromeClient.
2. Set android:hardwareAccelerated="true" to your MainActivity in AndroidManifest.xml.

There are two classes that inherit the WebChromeClient in your code (myWebChromeClient and MyWebChromeClient). The first implements showCustomView and hideCustomView methods and it seems fully working with full-screen video. The second one don't. But you (accidentally?) set the second as WebChromeClient to your WebView.

To fix this just change the line

webView.setWebChromeClient(new MyWebChromeClient());

to

mWebChromeClient = new myWebChromeClient();
webView.setWebChromeClient(mWebChromeClient);

in your initWebView() method.

UPD:

To lock orientation on portrait in normal (not full-screen) mode add following line into onHideCustomView() method:

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);

To let the system decide the best orientation in full-screen mode add this line to onShowCustomView(View view, CustomViewCallback callback) method:

setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_UNSPECIFIED);

来源：https://stackoverflow.com/questions/30748519/unable-to-full-screen-youtube-video-inside-custom-webview