In iOS when an Application goes to background or when it becomes active, event handlers in App delegate gets invoked. Is there any similar event handlers for Android’s Multitasking?
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In iOS when an Application goes to background or when it becomes active, event handlers in App delegate gets invoked. Is there any similar event handlers for Android’s Multitasking?
Not that I know of. I needed the same type of notification in my app as well to do some goes to background cleanup and comes to foreground restore type operations. What I did was subclass Activity and have that subclass call to a manager I wrote to track if the app was in foreground or background. In that subclassed activity call the manager to notify on activity “visible lifetime” events. I.E. call to say in foreground in the activites onStart and call to say in background in onStop. See this link for details of “visible lifetime” scroll down about 2 pages.
I then used my new subclassed activity as the bases for every activity in my program. So now your manager will be able to know whenever a foreground state change occurs. I then used the observer pattern in the manager to allow other objects to register to be notified of foreground state changes. This effectively mimics what we are used to coming from iOS. There may be better ways to do this but this works just fine.