How to kill an Android activity

Question

I have an application with three activities. FirstActivity, SecondActivity, ThirdActivity.

In FirstActivity there is a button, which starts SecondActivity. In SecondActivity, there are two ways to go to the ThirdActivity. But there is one method with a code:

    Intent intent = new Intent(SecondActivity.this, ThirdActivity.class);
    finish();
    startActivity(intent);

Both variants use this code snippet.

This code runs in a +- 12 seconds automatically
In onBackPressed() method

And here is my problem: when user press Back, ThirdActivity opens, but in a few seconds ThirdActivity opens again from the first variant.

So, how to fully kill an Activity, so it won't start another activity for two times?

Does this answer your question? [How to close activity and go back to previous activity in android](https://stackoverflow.com/questions/15393899/how-to-close-activity-and-go-back-to-previous-activity-in-android) — Haris, Dec 27 '20 at 19:36
@HarisDautović thanks for your suggestion, but unfortunately I have not found solution for my problem there. — Laughing_Man, Dec 27 '20 at 20:50
@Laughing_Man Yes, You must cancel it if you not need it anymore with handler.removeCallbacks(yourRunnable). When you start ThirdActivity from onBackPressed instead handler, remove your future task to stop running anymore. — Amir K. Zarini, Dec 27 '20 at 21:06
@AmirK.Zarini your comment helped me! I've stopped my hadler using removeCallbacksAndMessages(null); Thank you! You could write an answer, and I would accept it. — Laughing_Man, Dec 27 '20 at 21:33

score 0 · Answer 1 · edited Dec 27 '20 at 19:12

0

I'm not sure but try calling finish() after starting the activity maybe that will help I'm not sure though like this:

 Intent intent = new Intent(SecondActivity.this, ThirdActivity.class);
 startActivity(intent);
 finish();

edited Dec 27 '20 at 19:12

Long Luong

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answered Dec 27 '20 at 19:07

Brandon

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Unfortunatelly, it does not help. I've used a debugger, and program runs this method twice. – Laughing_Man Dec 27 '20 at 19:16
@Laughing_Man The code given in answer will work correctly. – Mrudul Tora Dec 27 '20 at 19:24

score 0 · Accepted Answer · answered Dec 28 '20 at 06:53

0

You should cancel your future task if you not need it anymore with

handler.removeCallbacks(yourRunnable)

When you start ThirdActivity from onBackPressed instead handler

answered Dec 28 '20 at 06:53

Amir K. Zarini

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How to kill an Android activity

2 Answers2