BlackBerry - Invoke a click event on bitmap Field

问题

can anyone help me for solving the below question. I am making an application for blackberry in that from one bitmapField i have to invoke a new screen by clicking on the bitmapField. I want the code for the same... how to invoke a new screen by clicking on a bitmapField... and i am using blackberry JDE 4.7

回答1:

Try making the BitmapField focusable

BitmapField bm = new BitmapField(bitmap, BitmapField.FOCUSABLE);

This might help

回答2:

BitmapField bmpField = new BitmapField(bitmap, BitmapField.FOCUSABLE)

   protected boolean navigationClick(int status, int time)
   {
      if(bmpField.isFocus)
      {
          UiApplication.getUiApplication().pushScreen(new MyScreen());
      }
      return true;
   }
}

i have used on a Storm and it works.

If even this does not work, u can go ahead and use touchEvent instead of navigationClick

回答3:

This must work

BitmapField bmpField = new BitmapField(bitmap, BitmapField.FOCUSABLE){

   protected void drawFocus(Graphics graphics, boolean on){
      //the simplies way to draw a rectangle and this will be the focus
   }                               

   protected boolean navigationClick(int status, int time)
   {
      //write here your code what you want to run the user clicks to the bitmap
      //try something like this
      UiApplication.getUiApplication().pushScreen(new MyScreen());
      return true;
   }
}

来源：https://stackoverflow.com/questions/2145163/blackberry-invoke-a-click-event-on-bitmap-field