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public class MainActivity extends Activity {
    protected LinearLayout webViewPlaceholder;
    protected WebView webView;
    private LinearLayout mContentView;
    private MyWebChromeClient mWebChromeClient = null;
    private View mCustomView;
    private FrameLayout mCustomViewContainer;
    private WebChromeClient.CustomViewCallback mCustomViewCallback;
    private boolean isFullScreen = false;
     Button b;
    FrameLayout.LayoutParams LayoutParameters = new FrameLayout.LayoutParams(FrameLayout.LayoutParams.MATCH_PARENT,
            FrameLayout.LayoutParams.MATCH_PARENT);
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        System.out.println("Oncreate is getting called ---------------------------");
        // Initialize the UI
        if(savedInstanceState == null){
            initUI();
        }

      }

      protected void initUI()
      {
        // Retrieve UI elements
        webViewPlaceholder = ((LinearLayout)findViewById(R.id.webViewPlaceholder));
        mContentView = webViewPlaceholder;
        // Initialize the WebView if necessary


        if (webView == null)
        {
            System.out.println("webView == null -----------------------------------");
          // Create the webview
          webView = new WebView(this);
          LinearLayout.LayoutParams webViewLayoutParameters = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT,
                  LinearLayout.LayoutParams.WRAP_CONTENT);

          webView.setLayoutParams(webViewLayoutParameters);
          webView.setBackgroundColor(Color.BLUE);
          WebSettings webSettings = webView.getSettings();
          webSettings.setJavaScriptEnabled(true);
            webSettings.setDomStorageEnabled(true);
            webSettings.setAllowContentAccess(true);
            webSettings.setDomStorageEnabled(true);
            webSettings.setRenderPriority(RenderPriority.HIGH);
            webSettings.setCacheMode(WebSettings.LOAD_NO_CACHE);
            webSettings.setJavaScriptCanOpenWindowsAutomatically(true);
            if (Build.VERSION.SDK_INT < 8) {
                webSettings.setPluginsEnabled(true);
            } else {
                webSettings.setPluginState(PluginState.ON);
            }
          mWebChromeClient = new MyWebChromeClient();
          // Load a page
          loadWebView("asfas");
        }

        // Attach the WebView to its placeholder
        webViewPlaceholder.addView(webView);
        webView.setWebChromeClient(mWebChromeClient);
      }

      private void loadWebView(final String url) {
            String s = ReadFromfile("link.txt", MainActivity.this);
            s ="<html><head><body>"+s+"</body></html>";
            webView.loadDataWithBaseURL("",Html.fromHtml(s).toString(),"text/html", "UTF-8",null);
        }

        public String ReadFromfile(String fileName, Context context) {
            StringBuilder ReturnString = new StringBuilder();
            InputStream fIn = null;
            InputStreamReader isr = null;
            BufferedReader input = null;
            try {
                fIn = context.getResources().getAssets()
                        .open(fileName, context.MODE_WORLD_READABLE);
                isr = new InputStreamReader(fIn);
                input = new BufferedReader(isr);
                String line = "";
                while ((line = input.readLine()) != null) {
                    ReturnString.append(line);
                }
            } catch (Exception e) {
                e.getMessage();
            } finally {
                try {
                    if (isr != null)
                        isr.close();
                    if (fIn != null)
                        fIn.close();
                    if (input != null)
                        input.close();
                } catch (Exception e2) {
                    e2.getMessage();
                }
            }
            return ReturnString.toString();
        }


      @Override
      public void onConfigurationChanged(Configuration newConfig)
      {
        super.onConfigurationChanged(newConfig);
      }

      @Override
      protected void onSaveInstanceState(Bundle outState)
      {
        super.onSaveInstanceState(outState);
        System.out.println("onSaveInstanceState -------------------------");
        // Save the state of the WebView
        webView.saveState(outState);
      }

      @Override
      protected void onRestoreInstanceState(Bundle savedInstanceState)
      {
        super.onRestoreInstanceState(savedInstanceState);
        System.out.println("onRestoreInstanceState -------------------------");
        // Restore the state of the WebView
        webView.restoreState(savedInstanceState);
      }
      private class MyWebChromeClient extends WebChromeClient implements OnCompletionListener,android.media.MediaPlayer.OnErrorListener{

            @Override
            public void onShowCustomView(View view, CustomViewCallback callback) {
                // if a view already exists then immediately terminate the new one
                 System.out.println("onShowCustomView -------------------------");
                if (mCustomView != null) {
                    callback.onCustomViewHidden();
                    return;
                }
                isFullScreen = true;
                mContentView.setVisibility(View.GONE);
                mCustomViewContainer = new FrameLayout(MainActivity.this);
                mCustomViewContainer.setLayoutParams(LayoutParameters);
                mCustomViewContainer.setBackgroundResource(android.R.color.black);
                view.setLayoutParams(LayoutParameters);
                // Sometimes getting remove view first it parent excepetion on moto devices
                //webViewPlaceholder.removeView(webView);
               // webViewPlaceholder.removeView(webView);
                mCustomViewContainer.addView(view);
                mCustomView = view;
                mCustomViewCallback = callback;
                mCustomViewContainer.setVisibility(View.VISIBLE);
                setContentView(mCustomViewContainer);
            }


            @Override
            public void onHideCustomView() {
                isFullScreen = false;
                if (mCustomView == null) {
                    return;
                } else {
                    System.out.println("Hiding the things properly :-------------------------------");
                    // Hide the custom view.
                    mCustomView.setVisibility(View.GONE);
                    // Remove the custom view from its container.
                    if(mContentView.getParent() != null){
                        ((LinearLayout)mContentView.getParent()).removeAllViews();
                    }
                  // mCustomViewContainer.removeView(mCustomView);
                    mCustomView = null;
                    mCustomViewContainer.setVisibility(View.GONE);
                    mCustomViewCallback.onCustomViewHidden();
                    // Show the content view.
                    mContentView.setVisibility(View.VISIBLE);
                    setContentView(mContentView);//////
                }
            }


            @Override
            public void onCompletion(MediaPlayer mp) {
                System.out.println("onCompletion :---------------------------");

            }


            @Override
            public boolean onError(MediaPlayer mp, int what, int extra) {
                Log.e("WebView","onError :---------------------------");
                return false;
            }

        }

     @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
         if(keyCode == KeyEvent.KEYCODE_BACK){
             Log.e("WebView","back pressed :---------------------------");
             if (mCustomViewContainer != null && isFullScreen){
                 mWebChromeClient.onHideCustomView();
             return true;
             }
         }else if(keyCode == KeyEvent.KEYCODE_HOME){
             Log.e("WebView","home pressed :---------------------------");
             mWebChromeClient.onHideCustomView();
         }
         return super.onKeyDown(keyCode, event);
    }

     /* @Override
        public void onBackPressed() {
            if (mCustomViewContainer != null)
                mWebChromeClient.onHideCustomView();
            else
                super.onBackPressed();
        }*/
}