How to clear previously opened activity in Android

Question

Intent intent = new Intent(MainActivity.this, Payment.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);

Opening coupon activity to apply coupon:

Intent intent = new Intent(Payment.this, Coupon.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);

From coupon activity opening payment activity with updated data

Intent intent = new Intent(Coupon.this, Payment.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);

The problem is, when I click on the back button on payment activity after applying the coupon, it opens the previously opened payment activity again (not the main activity).

onBackPressed() I don't want to do it static (like Intent intent = new Intent(Payment.this, MainActivity.class); and also don't want to use finish(); in payment activity.

Please help.

Why don't you want to call the MainActivity from onBackPressed or call finish()? — Luca Murra, Sep 10 '21 at 16:26
Because Payment activity opens from more than one activities — Gaurav Dureja, Sep 11 '21 at 05:55
How do you start your application? From an IDE (Android Studio) or from the installer? — David Wasser, Sep 13 '21 at 13:27
Try this please: launch `Payment`, then `Coupon`, then `Payment` again. Before pressing BACK button, use `adb shell dumpsys activity activities`, find the task stack for your app and paste that in the question. — David Wasser, Sep 13 '21 at 13:28

score 0 · Answer 1 · answered Sep 10 '21 at 18:41

0

You can use FLAG_ACTIVITY_NO_HISTORY when launching the Payment activity.

See: https://developer.android.com/reference/android/content/Intent#FLAG_ACTIVITY_NO_HISTORY

answered Sep 10 '21 at 18:41

Kilian

275
2
8

score 0 · Answer 2 · answered Sep 11 '21 at 09:54

This is a Simple Use case of startActivityForResult don't make it complicated with Intent Flags and launch modes.

Whenever you Open your Activity Coupon just use startActivityForResult and upon applying coupon send the result back to previous Activity (success/failure) or whatever result you want . Then you can change the UI as per the result you got in onActivityResult() . You can follow How to manage startActivityForResult on Android or the latest way from the doc Getting a result from an activity .

How to clear previously opened activity in Android

2 Answers2