Android : How to determing home key is pressed

How do I determine if the Home key is presse开发者_Python百科d? If it's pressed I want to do some handling and finish the activity since I don't want it to resume next time it's started. I can't handle it in onStop, since from the activity I start another activity(so onStop will get called even in this case).

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How do I determine if the Home key is pressed?

You don't.

If it's pressed I want to do some handling and finish the activity since I don't want it to resume next time it's started. I can't handle it in onStop, since from the activity I start another activity(so onStop will get called even in this case).

There are many ways in which a user can leave one of your activities, including:

1. By you starting another activity
2. By the user pressing HOME
3. By the user pressing BACK
4. By the user receiving a phone call, or some other activity popping up out of nowhere (e.g., alarm clock)
5. By the user responding to a notification
6. By the user rotating the device, putting it in a dock, or otherwise triggering a configuration change

Generally speaking, you have no idea which of those has occurred. isFinishing() will cover #3, and there are a couple of ways to identify #6, but the others are indistinguishable from a system standpoint.

If you wish to treat scenario #1 as special -- doing something different because the user is moving to one of your activities rather than something else -- then that's up to you to implement.