Using sleep to pause a method for a second

Question

I'm trying to create a simon says game so to let the user know which buttons to hit I decided I wanted to do something like upon a button click change background wait a second then change it back it doesn't work right though the button waits 1 second to click but the drawable doesn't change

What I have looks something like this

view.setBackgroundResource(R.drawable.black);

try {
      TimeUnit.SECONDS.sleep(5);           
} catch(InterruptedException ex) {
    Thread.currentThread().interrupt();
}

view.setBackgroundResource(R.drawable.green);

Look here at handler : https://stackoverflow.com/a/9166354/940834 . Put your code inside the handler, that sets it back. with delay in milliseconds — IAmGroot, Jul 26 '17 at 09:22

score 3 · Answer 1 · edited Jul 30 '17 at 20:41

3

You can achieve this using Handler. In my example, I set a 5sec delay after which I change the background color via view.setBackgroundResource(R.drawable.green);.

 Handler handler = new Handler();
    handler.postDelayed(new Runnable() {
      @Override
      public void run() {
          view.setBackgroundResource(R.drawable.green);
      }
    }, 5000);

edited Jul 30 '17 at 20:41

robinCTS

5,568
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answered Jul 26 '17 at 09:25

Mahesh Gawhane

313
3
19

score 1 · Answer 2 · answered Jul 26 '17 at 09:23

You can try CountDownTimer.

// You can change millisInFuture and countDownInterval according to your need.
long millisInFuture = 5000;
long countDownInterval = 1000;

new CountDownTimer(millisInFuture, countDownInterval) {
     @Override
     public void onTick(long l) {

     }

     @Override
     public void onFinish() {
         // Change your background color here
         view.setBackgroundResource(R.drawable.green);
     }
}.start();

score 1 · Answer 3 · edited Jul 26 '17 at 12:19

1

you can use new Handler()try something below like this.

view.setBackgroundResource(R.drawable.black);

     new Handler().postDelayed(new Runnable() {
      @Override
      public void run() {
          view.setBackgroundResource(R.drawable.green);
      }
    }, 5000);

edited Jul 26 '17 at 12:19

ItamarG3

3,974
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42

answered Jul 26 '17 at 09:27

UserSharma

442
5
20

score 0 · Answer 4 · answered Jul 26 '17 at 09:22

0

Try changing the view background in runOnUiThread and invalidating the view.

answered Jul 26 '17 at 09:22

Aditi

389
4
13

1

This should be a comment...post some code snippet useful to OP – Akshay Jul 26 '17 at 09:27

Using sleep to pause a method for a second

4 Answers4