All events that would trigger the applicationWillResignActive & applicationDidBecomeActive
<p>I know pressing Command-L can trigger <strong>applicationWillResignActive:</strong> from forum here. </p>

<p>1) Is it only applied to IOS4?</p>

<p>2) Besides, in the real scenario with the device, what would trigger the  <strong>applicationWillResignActive:</strong> &amp; <strong>applicationDidBecomeActive:</strong>? </p>

<p>I searched answers in this forum. Some said it depends the reply of a call, some said sms, some said only an app which pops up a view. Is there a list of events I can find?</p>
