了解片段事务过程中的生命周期方法调用

Question

getActivity().getSupportFragmentManager().beginTransaction().add(R.id.container, fragementB).addToBackStack(null).commit();

片段B

奥纳塔奇

OnCreate

停止-片段不可见。宿主活动已停止，或者片段已从活动中移除，但已添加到后堆栈中。停止的片段仍处于活动状态（系统保留所有状态和成员信息）。但是，它对用户不再可见，如果活动被杀死，它将被杀死。

这是否意味着当在同一活动中添加新片段时，不调用当前片段的方法？

然后在片段B中使用popbackstack()

我所期待的是？

片断A的onStart方法被调用，因为片断A现在可见

案例2

getActivity().getSupportFragmentManager().beginTransaction().replace(R.id.container, fragementB).commit();

片段A

停顿

停止

 getActivity().getSupportFragmentManager().beginTransaction().replace(R.id.container, fragementB).addToBackStack("tag").commit();

奥纳塔奇

OnCreate

OnCreateView

然后在片段B中使用popbackstack()

片段A

OnCreateView

OnDestroy

翁德塔奇

Answer 1

我运行了一些日志以查看如下结果（就像这里的活动中所做的那样:https://stackoverflow.com/A/61299029/3904109

分段启动

On Fragment Launched (First Time)
———————————————————————
onAttach: 
onCreateView:
onViewCreated: 
onActivityCreated: 
onStart: 
onResume: 


On Coming Back To Fragment (From another fragment)
———————————————————————
onCreateView: 
onViewCreated: 
onActivityCreated: 
onStart: 
onResume: 


OnMaximize(Square Button-After Back Pressed)
———————————————————————
onAttach: 
onCreateView: 
onViewCreated: 
onActivityCreated: 
onStart: 
onResume: 


OnMaximize(Square Button-After Circle Button)
———————————————————————
onStart: 
onResume:


OnMaximize(After Circle Button)
————————————————————————————————————————————————
onStart: 
onResume:

片断停止

On Going To Another Fragment (Skipping 1 Fragment)
———————————————————————
onPause: 
onStop: 
onDestroyView: 


On BackPressed - Reverse Triangle Button (App Minimized)
———————————————————————
onPause: 
onStop: 
onDestroyView: 
onDestroy: 
onDetach: 


OnMinimize (Circle Button)
————————————————————————————————————————————————
onPause: 
onStop: 


OnMinimize (Square Button)
————————————————————————————————————————————————
onPause: 
onStop: 


Going To Another Activity
————————————————————————————————————————————————
onPause: 
onStop: 


Close The App
————————————————————————————————————————————————
onDestroyView: 
onDestroy:

public View onCreateView(@NonNull LayoutInflater inflater,
                         @Nullable ViewGroup container,
                         @Nullable Bundle savedInstanceState) {

    Log.d("TAG",
          "onCreateView: ");
}

@Override
public void onAttach(Context context) {
    Log.d("TAG",
          "onAttach: ");
    super.onAttach(context);
}

@Override
public void onViewCreated(@NonNull View view,
                          @Nullable Bundle savedInstanceState) {

    Log.d("TAG",
          "onViewCreated: ");
    super.onViewCreated(view,
                        savedInstanceState);
}

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    Log.d("TAG",
          "onActivityCreated: ");
    super.onActivityCreated(savedInstanceState);
}

@Override
public void onStart() {
    Log.d("TAG",
          "onStart: ");
    super.onStart();
}

@Override
public void onResume() {

    Log.d("TAG",
          "onResume: ");

    reAttachListeners();
    super.onResume();
}

@Override
public void onPause() {
    super.onPause();

    Log.d("TAG",
          "onPause: ");
    removeListeners();

}

@Override
public void onStop() {
    Log.d("TAG",
          "onStop: ");
    super.onStop();
}

@Override
public void onDestroyView() {
    Log.d("TAG",
          "onDestroyView: ");
    super.onDestroyView();
}

@Override
public void onDestroy() {
    Log.d("TAG",
          "onDestroy: ");
    super.onDestroy();
}

@Override
public void onDetach() {

    Log.d("TAG",
          "onDetach: ");
    super.onDetach();
}