Java 如何保存片段的状态

我有多个片段，其中包含我想要保存的数据，并且能够从不同的片段进行访问

如果我只想保存一个特定片段的状态，我将如何保存

以下是我目前的导航方式：

片段“1”

片段“2”

我还尝试通过将值存储在散列图中，然后在暂停和恢复时使用来传递键来传递数据，但没有成功/

@Override
public void onCreate(Bundle savedInstanceState) {
    ...
    if (savedInstanceState != null) {
        mContent = getSupportFragmentManager().getFragment(
                    savedInstanceState, "mContent");
    }
}

@Override
protected void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
getSupportFragmentManager().putFragment(outState, "mContent", mContent); 
}

switch(v.getId()){


case R.id.imageButton2:
    Fragment fragment;
    fragment = new Frag1();
    fragment.setArguments(fragment.getArguments());
    android.app.FragmentManager frgManager = getFragmentManager();
    frgManager.beginTransaction().replace(R.id.content_frame, fragment)
            .commit();  
    break;

case R.id.imageButton1:     
    fragment = new  LifeFrag3();
    android.app.FragmentManager frgManage = getFragmentManager();
    frgManage.beginTransaction().replace(R.id.content_frame, fragment)
            .commit();
    break;

@Override
public void onCreate(Bundle savedInstanceState) {
    ...
    if (savedInstanceState != null) {
        mContent = getSupportFragmentManager().getFragment(
                    savedInstanceState, "mContent");
    }
}

@Override
protected void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
getSupportFragmentManager().putFragment(outState, "mContent", mContent); 
}