当我第一次从主要活动开始活动时，它先经过onCreate（）然后再经过onStart（）。在应用程序中时，如果我关闭屏幕，它将转到onPause（），其中保存了一些数据。然后立即转到onStop（），然后转到onDestroy（），然后再次转到，而无需在屏幕上转到onCreate（），onStart（）和onPause（）。
它应该在onDestroy（）之后立即转到onCreate（），onStart（），而无需我做任何事情吗？
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_timegame);
}
@Override
protected void onResume() {
super.onStart();
if (checkFirstTimeRun())
initializeGame();
else
resumeGame();
}
@Override
protected void onPause() {
super.onPause();
saveGameData();
}
最佳答案
简短说明（Considering you are not using fragments）：
活动的创建为OnCreate，OnStart，OnResume
旋转屏幕OnPause，OnStop，OnDestroy-再次OnCreate，OnStart，OnResume，因为在方向更改时活动被销毁并重新创建
因此，如果您不旋转OnCreate，OnStart，OnResume，则不会第二次触发！
了解执行哪些事件以及何时执行：
Have a look at one of my answers i posted in stackoverflow - Click Here
用例示例（Considering you are using fragments）：
示例项目：
我有一个开放源代码项目Download it here并执行它，然后查看日志以了解>事件序列是一个接一个地执行的（我在项目中也有片段，如果不需要的话，请>片段日志除外）
项目观察
如果路径是Activity-FragmentOne并第一次更改方向，则触发的事件如下MainActivity-onCreate-FragmentOne-onAttach-FragmentOne-onCreate-FragmentOne-onCreateView-FragmentOne-onActivityCreated-FragmentOne-onStart-FragmentOne-onResume
如果路径为Activity-FragmentOne-orientationchange并首次更改方向，则触发的事件如下MainActivity-onCreate-FragmentOne-onAttach-FragmentOne-onCreate-FragmentOne-onCreateView-FragmentOne-onActivityCreated-FragmentOne-onStart-FragmentOne-onResume-FragmentOne-onPause-FragmentOne-onSaveInstanceState-FragmentOne-onStop-FragmentOne-onDestroy-FragmentOne-onDetach-MainActivity-onCreate-FragmentOne-onAttach-FragmentOne-onCreate-FragmentOne-onCreateView-FragmentOne-onActivityCreated-FragmentOne-onStart-FragmentOne-onResume
如果路径为Activity-FragmentOne-orientationchange-orientationchange并首次更改方向，则触发的事件如下MainActivity-onCreate-FragmentOne-onAttach-FragmentOne-onCreate-FragmentOne-onCreateView-FragmentOne-onActivityCreated-FragmentOne-onStart-FragmentOne-onResume-FragmentOne-onPause-FragmentOne-onSaveInstanceState-FragmentOne-onStop-FragmentOne-onDestroy-FragmentOne-onDetach-MainActivity-onCreate-FragmentOne-onAttach-FragmentOne-onCreate-FragmentOne-onCreateView-FragmentOne-onActivityCreated-FragmentOne-onStart-FragmentOne-onResume-FragmentOne-onPause-FragmentOne-onSaveInstanceState-FragmentOne-onStop-FragmentOne-onDestroy-FragmentOne-onDetach-MainActivity-onCreate-FragmentOne-onAttach-FragmentOne-onCreate-FragmentOne-onCreateView-FragmentOne-onActivityCreated-FragmentOne-onStart-FragmentOne-onResume
如果路径为Activity-FragmentOne-orientationchange-orientationchange-FragmentTwo并首次更改方向，则触发的事件如下MainActivity-onCreate-FragmentOne-onAttach-FragmentOne-onCreate-FragmentOne-onCreateView-FragmentOne-onActivityCreated-FragmentOne-onStart-FragmentOne-onResume-FragmentOne-onPause-FragmentOne-onSaveInstanceState-FragmentOne-onStop-FragmentOne-onDestroy-FragmentOne-onDetach-MainActivity-onCreate-FragmentOne-onAttach-FragmentOne-onCreate-FragmentOne-onCreateView-FragmentOne-onActivityCreated-FragmentOne-onStart-FragmentOne-onResume-FragmentOne-onPause-FragmentOne-onSaveInstanceState-FragmentOne-onStop-FragmentOne-onDestroy-FragmentOne-onDetach-MainActivity-onCreate-FragmentOne-onAttach-FragmentOne-onCreate-FragmentOne-onCreateView-FragmentOne-onActivityCreated-FragmentOne-onStart-FragmentOne-onResume-FragmentOne-onStop-FragmentOne-onAttach-FragmentOne-onCreate-FragmentOne-onCreateView-FragmentTwo-onActivityCreated-FragmentOne-onStart-FragmentOne-onResume
如果路径为Activity-FragmentOne-orientationchange-orientationchange-FragmentTwo-orientationchange并首次更改方向，则触发的事件如下MainActivity-onCreate-FragmentOne-onAttach-FragmentOne-onCreate-FragmentOne-onCreateView-FragmentOne-onActivityCreated-FragmentOne-onStart-FragmentOne-onResume-FragmentOne-onPause-FragmentOne-onSaveInstanceState-FragmentOne-onStop-FragmentOne-onDestroy-FragmentOne-onDetach-MainActivity-onCreate-FragmentOne-onAttach-FragmentOne-onCreate-FragmentOne-onCreateView-FragmentOne-onActivityCreated-FragmentOne-onStart-FragmentOne-onResume-FragmentOne-onPause-FragmentOne-onSaveInstanceState-FragmentOne-onStop-FragmentOne-onDestroy-FragmentOne-onDetach-MainActivity-onCreate-FragmentOne-onAttach-FragmentOne-onCreate-FragmentOne-onCreateView-FragmentOne-onActivityCreated-FragmentOne-onStart-FragmentOne-onResume-FragmentOne-onStop-FragmentOne-onAttach-FragmentOne-onCreate-FragmentOne-onCreateView-FragmentTwo-onActivityCreated-FragmentOne-onStart-FragmentOne-onResume-FragmentOne-onPause-FragmentOne-onSaveInstanceState-FragmentOne-onSaveInstanceState-FragmentOne-onStop-FragmentOne-onDestroy-FragmentOne-onDetach-FragmentOne-onDestroy-FragmentOne-onDetach-MainActivity-onCreate-FragmentOne-onAttach-FragmentOne-onCreate-FragmentOne-onAttach-FragmentOne-onCreate-FragmentOne-onCreateView-FragmentTwo-onActivityCreated-FragmentOne-onStart-FragmentOne-onResume