How to back to my activity from another activity when I press home key?
<p>I launch activity B from activity A, now I want to go back to activity A rather than Launcher when I press home key, how to implement?</p>

<p>I found a similar case, the LockPatternKeyguardView, which launches a emergency dialer, then press home key, can back to LockPatternKeyguardView again, how to do this?</p>
