Showing Timer in android

问题

My objective is to display a simple timer clock on my screen where it starts from 20 and goes on decreasing and when it becomes 0 I want to start an action. How to achieve this ? Thanks in advance

回答1:

I don't know how you want to display it but you can do this also just by taking a TextView and keep changing its Text every second.

static int i = 20;
 new CountdownTimer(20000, 1000) {

     public void onTick(long millisUntilFinished) {
         i = i-1;
         mTextField.setText(String.valuOf(i));
     }

     public void onFinish() {
         //do your stuff here
     }
  }.start();

来源：https://stackoverflow.com/questions/7592863/showing-timer-in-android