How can I wait for 10 second without locking application UI in android

Question

I am stuck with a problem, I want to wait 10 second because I want my application to start the code below after that 10 sec but without stopping that person from clicking anything else in the application (without calling Thread.sleep();).

try {
    Log.v("msg", "WAIT CheckFrequencyRun");
    Thread.sleep(10000); // giving time to connect to wifi
    
   } catch (InterruptedException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
   }
   //if no network
   if(wifiManager.getConnectionInfo().getNetworkId()==-1){
    //stop wifi
    wifiManager.setWifiEnabled(false);
    Log.v("msg", "no connection");
    handler.postDelayed(this, checkInterval);
   }
   //else connection
   else{
    Log.v("msg", "connection");
    onDestroy();
   }

postDelayed wont't lock your Ui but Thread.Sleep do. Remove Thread.Sleep and continue your work in your Runnable — Mohsen Afshin, Jun 21 '13 at 14:11
Have a look at these questions, they're looking quite similiar: - https://stackoverflow.com/questions/4111905/how-do-you-have-the-code-pause-for-a-couple-of-seconds-in-android?rq=1 - https://stackoverflow.com/questions/9630681/android-wait-the-main-thread-while-a-dialog-gets-input-in-a-separate-thread?rq=1 - https://stackoverflow.com/questions/9640880/android-waiting-for-an-action?rq=1 - https://stackoverflow.com/questions/13765034/wait-a-time-android?rq=1 — Marvin Emil Brach, Jun 21 '13 at 14:08

score 182 · Answer 1 · edited May 18 '18 at 07:09

182

You can use this:

Handler handler = new Handler();
handler.postDelayed(new Runnable() {
    public void run() {
     // Actions to do after 10 seconds
    }
}, 10000);

For Stop the Handler, You can try this: handler.removeCallbacksAndMessages(null);

edited May 18 '18 at 07:09

abdullahselek

7,893
3
50
40

answered Jun 21 '13 at 14:34

Recaldev

2,836
3
14
6

1

Easy, and worked without any extra effort. I needed something concize and it worked like a charm – user3833732 Nov 04 '16 at 12:37
Beauty!!! Worked like a charm. Thanks! – Joshua Pinter Nov 25 '21 at 22:49

score 20 · Accepted Answer · edited May 23 '17 at 12:18

20

You never want to call thread.sleep() on the UI thread as it sounds like you have figured out. This freezes the UI and is always a bad thing to do. You can use a separate Thread and postDelayed

This SO answer shows how to do that as well as several other options

Handler

TimerTask

You can look at these and see which will work best for your particular situation

edited May 23 '17 at 12:18

Community

1
1

answered Jun 21 '13 at 14:08

codeMagic

44,549
13
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Anton Bevza · Answer 3 · 2013-06-21T14:39:43.583

3

1with handler:

handler.sendEmptyMessageDelayed(1, 10000);
}

private Handler handler = new Handler() {
    @Override
    public void handleMessage(Message msg) {
        if (msg.what == 1) {
           //your code
        }
    }
};

edited Jun 21 '13 at 14:39

answered Jun 21 '13 at 14:18

Anton Bevza

463
7
18

what is the "TRIGGER" because android documentation ask for a int could not put string – DarkVision Jun 21 '13 at 14:26
I was wrong... this is id of your message. Try with 1 – Anton Bevza Jun 21 '13 at 14:29

score 2 · Answer 4 · answered Jun 21 '13 at 14:11

2

do this on a new thread (seperate it from main thread)

 new Thread(new Runnable() {
     @Override
     public void run() {
        // TODO Auto-generated method stub
     }
}).run();

answered Jun 21 '13 at 14:11

Marcis

71
6

How can I wait for 10 second without locking application UI in android

4 Answers4

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