问Android中的多个webviews视图

EN

 public void onCreate(Bundle savedInstanceState)
    {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    Intent intent = new Intent(this, WebScreen.class);
    startActivity(intent);
    }

  public class WebScreen extends Activity { 
        private WebView myWebView; 


  @Override 
   public void onCreate(Bundle savedInstanceState) { 
       super.onCreate(savedInstanceState); 
       this.requestWindowFeature(Window.FEATURE_PROGRESS); 

    } 

    public void onClick(View arg0) { 
      return; 
     } 

     @Override 
     protected void onPause() { 
       myWebView = null; 
      super.onPause(); 
      } 

      @Override 
      protected void onStart(){  
       }

      @Override 
       protected void onResume() { 
          super.onResume(); 
          myWebView = new WebView(this); 
          myWebView.getSettings().setJavaScriptEnabled(true); 
          myWebView.loadUrl("myURL"); 
          setContentView(myWebView); 
       }   

        @Override 
        public void onBackPressed() { 
          super.onBackPressed();
          myWebView = null; 
         }