Question

I am able to now change an image when pressing OnTouch, for example I press image1 make it invisible and show the one i have underneath it…

Now i want to change an image on runtime, basically I have an array if array[i] = 5; then i want to make image5 invisible?

How can I do this?, I tried it with a

try{
     Thread.sleep(2000);
     }
catch
  {
  }

and it blacks out the screen and then shows the backgroung after 2 seconds but i never see the image get invisible;

i would like to be able to do something like this

for(int i=0;i < array.length; i++)
{
 if(array[i] == 1)
     {
          try
          {
         Thread.sleep(1000);
         ImageView image = (ImageView)findById(myImage01);
         image.setVisibility(View.INVISIBLE);      
         Thread.sleep(1000);
         image.setVisibility(View.VISIBLE);  

           }  
         catch(InterruptedException e) 
            {
            }
       }

}

You get the idea… right now if i do this it will black out the screen and then return to the main layout and do nothing 🙁

Thank you in advance

By the way I am new in Android (please consider 🙁 )

Answer 1

Thread.sleep() is a bad idea because it halts the thread. So if it is the UI-thread, it can not refresh the screen anymore. That’s probably what you observe. Use something like

new Handler().postDelayed(new Runnable() { 
  void run() {
      image.setVisibility(View.VISIBLE);
  }
}, 1000);