Java how to wait before going on

Question

I want my runnable to wait a couple of seconds before starting again, any advice on how to do this?

if i use this.wait(); it doesn't work because that stops everthing in my program and i just want the runnable to pause.

Related: http://stackoverflow.com/questions/11548864/how-to-make-an-android-program-wait — Sufian, Aug 02 '16 at 10:23
try this http://stackoverflow.com/questions/15874117/how-to-set-delay-in-android — Meo_3_the, Aug 02 '16 at 10:26

score 0 · Accepted Answer · answered Aug 02 '16 at 10:23

Here is an example for 2 second delayed Runnable

final Handler handler = new Handler();
final Runnable runnable = new Runnable() {
    @Override
    public void run() {
        // Do stuff

        handler.postDelayed(this, 2000);
    }
};

handler.postDelayed(runnable, 2000);

score 0 · Answer 2 · answered Aug 02 '16 at 10:26

Hope this helps

Handler handler = new Handler();
final Runnable runner = new Runnable()
{
  public void run() 
   {
   //Restarts       
    handler.postDelayed(this, 1000);
  }
};

Thread thread = new Thread()
{
@Override
public void run() {
    try {
        while(true) {
            sleep(1000);
            handler.post(runner);
        }
    } catch (InterruptedException e) {
        e.printStackTrace();
    }
}
};

thread.start();

score 0 · Answer 3 · answered Aug 02 '16 at 10:30

It sounds that the main-thread is blocked in your example. See the example below. Here the main thread isn't blocked by calling wait.

public void onClick(View v) {
new Thread(new Runnable() {
    public void run() {
        try {
                synchronized (this) {
                    wait(1000); 
                }
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
    }
  }).start();
}

Look here is an example for threads: Android.com / processes and threads

Java how to wait before going on

3 Answers3