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Editorial Team
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Asked: 2026-05-26T04:46:37+00:00

I have a Notification which starts an Activity B with FLAG_ACTIVITY_NEW_TASK. The documentation says:

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I have a Notification which starts an Activity B with FLAG_ACTIVITY_NEW_TASK. The documentation says:

[…] if a task is already running for the activity you are now starting, then a new activity will not be started; instead, the current task will simply be brought to the front […]

In the case that the user taps the Notification while in Home Screen or a different app, this works fine. But if the user is in an Activity of my app, let’s say in Activity “A”, and then taps the Notification multiple times, Activity “B” is started multiple times. This leads to Back key not bringing back to Activity “A”.

What am I doing wrong here? And where’s the difference between being in home screen or a different app and being in Activity A of my app?

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1 Answer

  1. Editorial Team

    You probably want FLAG_ACTIVITY_CLEAR_TOP|FLAG_ACTIVITY_SINGLE_TOP for the notification activity. That will make sure that there is only one instance of Activity B, and it is re-used .

    The difference is that when your Activity A is in the foreground you already have task running , otherwise (most probably) not. Read this for more info about tasks.

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