我正在使用TabLayout播放片段。一旦我從TabLayout片段移動到下一個片段，然后按返回鍵。默認的TabLayout片段上的內容消失了。我在帖子中找到了可能的解決方案。以下是TabLayout的代碼。public class IndividualCollectionSheetFragment extends MifosBaseFragment {private TabLayout tabLayout;private ViewPager viewPager;private View rootView;public IndividualCollectionSheetFragment() {}public static IndividualCollectionSheetFragment newInstance() {    Bundle args = new Bundle();    IndividualCollectionSheetFragment fragment = new IndividualCollectionSheetFragment();    fragment.setArguments(args);    return fragment;}@Overridepublic void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);}@Nullable@Overridepublic View onCreateView(LayoutInflater inflater,                         @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {    rootView = inflater.inflate(R.layout.fragment_individual_recycler, container, false);    ButterKnife.bind(this, rootView);    setToolbarTitle(getStringMessage(R.string.individual_collection_sheet));    viewPager = rootView.findViewById(R.id.viewpager);    setupViewPager(viewPager);    tabLayout = rootView.findViewById(R.id.tabs);    tabLayout.setupWithViewPager(viewPager);    return rootView;}帖子中的解決方案建議使用getChildFramentManager而不是getSupportFragmentManager。我一改成getChildFragmentManager。我得到了錯誤。        java.lang.IllegalStateException: Fragment CollectionSheetDialogFragment{572dd42 #0 Identifier Dialog Fragment} declared target fragment NewIndividualCollectionSheetFragment{45e8153 #0 id=0x7f090361 android:switcher:2131297121:0} that does not belong to this FragmentManager!這可能是由于擴展了DialogFragment的CollectionSheetDialogFragment類造成的，并且與所使用的不同片段管理器之間必須存在不一致之處。