什么时候不调用 onRestoreInstanceState？

Question

Docs 描述何时调用 onRestoreInstanceState：

This method is called after onStart() when the activity is being re-initialized from a previously saved state, given here in savedInstanceState. (...) This method is called between onStart() and onPostCreate(Bundle). This method is called only when recreating an activity; the method isn't invoked if onStart() is called for any other reason.

我很好奇“onStart() 被称为 出于任何其他原因”在 onRestoreInstanceState 的上下文中是什么意思？

Answer 1

Activity 的正常生命周期如下所示：

• onCreate()
• .
• onStart()
• onResume()
• onPause()
• onStop()
• .
• onDestroy()

如果 Activity 被另一个 Activity 完全遮挡，onStart() 和 onStop() 之间的生命周期回调可能会反复发生。在这种情况下，当 Activity 被另一个 Activity 完全遮挡时，将调用 onStop()。当 Activity 再次可见时，onStart() 将被调用 而 onRestoreInstanceState() 不会被调用 因为 Activity 不会被重新创建。