在片段中使用 FragmentManager？

Question

我真的在这里遇到了麻烦。我正在尝试从片段中打开对话框片段，但我无法让它工作

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;

public class FragmentDiscover extends Fragment
{
    private View rootView;
    private ImageButton folderButton;
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
    {
        // Inflate the layout for this fragment
        rootView = inflater.inflate(R.layout.activity_9a_discover , container, false);
        bindActivity();
        return rootView;
    }
    private void bindActivity()
    {
        cardStack = (SwipeDeck) rootView.findViewById(R.id.main_frag_swipe_deck);
        dragCheckbox = (CheckBox) rootView.findViewById(R.id.main_frag_checkbox_drag);
        dragCheckbox.setVisibility(View.GONE);
        //Folder button
        final android.app.FragmentManager fragmentManager = getFragmentManager();

        FragmentManager fragmentManager1 = getFragmentManager();//RED LINE ERROR?!?!?

        final FoldersDialogFragment foldersDialogFragment = new FoldersDialogFragment();
        folderButton = (ImageButton) rootView.findViewById(R.id.main_button_folders);
        folderButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                foldersDialogFragment.show(fragmentManager, "folderPop");
            }
        });
        makeSomeSampleCards();
    }

所以FragmentManager fragmentManager1 = getFragmentManager();

foldersDialogFragment.show(fragmentManager, "folderPop"); 行变成红线错误。

还有FragmentManager fragmentManager1 = getSupportFragmentManager;
使用 v4 导入，这给了我一个红线错误。

我不知道如何解决这个问题......希望你的家伙的智慧！

干杯！

Answer 1

当您在Fragment 中时，您使用getChildFragmentManager() 检索android.support.v4.app.FragmentManager 以添加子片段（其他片段拥有的片段）。

当然，您还应该确保使用android.support.v4.DialogFragment 作为FoldersDialogFragment 的基类。