How to use handler as a timer in android?

Question

    Handler handler = new Handler();    
    if (v.getId() == R.id.play){    
       handler.postDelayed(new Runnable() {                    
       public void run() {
           play.setBackgroundResource(R.drawable.ilk);
       }
   }, 2000);    
       play.setText("Play");    
}

I want to set background first and then after 2 seconds later, code will continue next line which is play.setText("Play"); and goes like that. Instead of this, first text appears. 2 seconds later background changes.

Answer 1

Handler.postDelayed returns immediately. And next line is executed. After indicated milliseconds, the Runnable will be executed.

So your code should be like this:

void doFirstWork() {
    Handler handler = new Handler();

    if (v.getId() == R.id.play){

       handler.postDelayed(new Runnable() {
           public void run() {
               play.setText("Play");
               doNextWork();
           }
       }, 2000);

       play.setBackgroundResource(R.drawable.ilk);
    }
}

void doNextWork() {
    ...
}