By the document, "onPause" is called, when:
when the system is about to start resuming a previous activity.
Compared to "onStop", the difference is:
Called when the activity is no longer visible to the user, because another activity has been resumed and is covering this one.
But when I long-press HW-Home key and the "recent apps" shows up, the "onPause" is not called.
At this moment, I can no long able to interact with the original activity, but it is still visible.
I am confused by this situation. Please help to explain.
Thank you very much. BR, Henry
This actually happens because when the Home key is long pressed, there is no activity being launched. The onPause/onStop will only be called if you select one of the apps present in the "Recent Apps" list.
The docs of onPause() are pretty clear:
Called as part of the activity lifecycle when an activity is going into the background, but has not (yet) been killed.