How to simulate killing activity to conserve memor

Question

Android doc say:

"When the system, rather than the user, shuts down an activity to conserve memory, ... "

But how to simulate this situation?I want to debug the onRestoreInstanceState(Bundle) method,but don't know how to.

Answer 1

Use the SetAlwaysFinish app (works on a real device and in the emulator) or use the Google DevTools app (works in the emulator only).

These apps use the hidden AlwaysFinish setting of the ActivityManagerNative class to change the behavior of the OS and cause it to immediate unload every activity as soon as it's no longer in the foreground. This will reliably trigger the onSaveInstanceState and onRestoreInstanceState events.

See link below for more details: http://bricolsoftconsulting.com/how-to-test-onsaveinstancestate-and-onrestoreinstancestate-on-a-real-device/

Answer 2

There's a decent solution for this in Android 6 and newer. See my answer here: Simulate killing of activity in emulator