1.当一个Activity启动另一个时,它们的生命周期回调有部分是重合的,回调的时序搞错也可能引发一些问题。
Activity A starts Activity B:
- Activity A's
onPause()
method executes. - Then, Activity B's
onCreate()
,onStart()
, andonResume()
methods execute in sequence. (Activity B now has user focus.) - Then, if Activity A is no longer visible on screen, its
onStop()
method executes.