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AN4430 bảng dữ liệu(PDF) 13 Page - STMicroelectronics

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Giải thích chi tiết về linh kiện  Designing an NFC Android Application for M24SR and M24LR devices
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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AN4430 bảng dữ liệu(HTML) 13 Page - STMicroelectronics

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AN4430
Android Application Overview
41
Figure 4 is an activity skeleton to show which callback method set has to be implemented to
handle the fundamental lifecycles methods. Taken together, those callbacks define the
entire life cycle of an activity managed by the android system. The same figure shows that
developer can manage three different nested loops in the activity life cycle
•
Entire lifetime: Bound within the onCreate() and onDestroy() calls, activity should setup
or release resources on onCreate() and onDestroy() system call respectively.
•
Visible lifetime: Bound within onStart() and onStop() calls, user can see the activity on-
screen and the required resources by the activity have to be maintains.
•
Foreground lifetime: Bound within the onResume() and onPause() calls, user can
interact with the activity’s screen.
Figure 4. Activity life cycle



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