How to simulate Android killing my process

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The best way to test this for me was doing this:

  • Open ActivityD in your application
  • Press Home button
  • Press Terminate Application in Logcat window in Android Studio (this will kill the app process, make sure you select your device and process in Logcat dropdowns at top)
  • Get back to the application with Home long press or opened apps (depends on the device)
  • Application will start in recreated ActivityD (ActivityA, ActivityB, ActivityC are dead and will be recreated when you get back to them)

On some devices you can also get back to application (ActivityD) with Applications -> Your launcher icon but on other devices it will start the ActivityA instead.

This is what Android docs are saying about that:

Normally, the system clears a task (removes all activities from the stack above the root activity) in certain situations when the user re-selects that task from the home screen. Typically, this is done if the user hasn’t visited the task for a certain amount of time, such as 30 minutes.

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