How change activity background color

Question

I have button called color. How can I change the Activity background color every 5 seconds?

Answer 1

Quick google search: How to set background color of an Activity to white programmatically?

Put that in a loop with a Thread.sleep(5000) and wrap it with a function that sets the colors you want.

Answer 2

Do not sleep a thread , its a bad practice Create the object of your parent view in layout and use Async task to update the UI after a fixed interval in below method

 protected void onProgressUpdate(Integer... progress) {
         // interact with UI here
     }

see the docs for AsyncTask implementation.

Answer 3

You could use TimerTask

e.g.

Time timer = new Timer();
timer.scheduleAtFixedRate( new TimerTask(){
                public void run(){
                  //here set background
                }
                },0,5000);

For more details, http://developer.android.com/reference/java/util/Timer.html