Post Delay Method - Android

Question

I used postedDelayed method to refresh my Activity, which works fine. But the problem is that even when I press the Back button postdelayed method call back the previous activity..

//handler for 30000 milli-secs post delay refreshment of the activity

mHandler.postDelayed(new Runnable() {
public void run() {
 dostuff();
 }
 }, 30000);
 }
protected void dostuff() {
Intent intent = getIntent();
finish();startActivity(intent);
Toast.makeText(getApplicationContext(), "refreshed", Toast.LENGTH_LONG).show();
}
public void onBackPressed() {
 super.onBackPressed();
 finish();
 mHandler.removeCallbacks(null);
 }
protected void onStop() {
 mHandler.removeCallbacks(null);
 super.onStop();
 }

• androidgeek: Please post your code ........to check the problem

Answer 1

You can use removeCallbacks(runnable) method of the handler using which you are calling postDelayed() method. For example, if you used:

mHandler.postDelayed(mRunnable, mTime)

for refreshing the activity, then use

mHandler.removeCallbacks(mRunnable)

in onPause() method of the activity.

• Salman Khakwani: It is still making the Application crash and i am not getting any logs for this.

Answer 2

Make a sign of boolean in your postdelayed method. Init the sign as true,when the activity is finnished , set the value of sign as false.

• Simon McKenzie: Your answer's not clear. Perhaps a code sample would make this easier to understand.

Answer 3

You can use this piece of code to run after a 3 sec delay.

new Timer().schedule(new TimerTask() { 
 @Override
 public void run() {
 // run your code here 
 }
}, 3000);