显示来自其他DialogFragment的DialogFragment

Question

我有一个向用户显示选项列表的DialogFragment，其中一个选项是“删除”选项，当用户按下删除选项时，我想显示另一个DialogFragment作为确认，不幸的是，确认对话框没有显示。

以下是我的代码

第一个片段代码

public class ContactDialogOption extends SherlockDialogFragment {

    public static final String TAG = ContactDialogOption.class.getSimpleName();

    public ContactDialogOption() {
        super();
        // TODO Auto-generated constructor stub
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) {
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());

        builder.setIcon(R.drawable.ic_launcher);
        builder.setTitle(R.string.options);

        builder.setItems(new String[] {

        getString(R.string.call), getString(R.string.send_message),
                getString(R.string.copy), getString(R.string.edit),
                getString(R.string.delete)

        }, new DialogInterface.OnClickListener() {

            @Override
            public void onClick(DialogInterface dialog, int which) {
                          if(which == 4) //delete
                          {
FragmentManager mgr = getActivity().getSupportFragmentManager();
    FragmentTransaction ft = mgr.beginTransaction();
        Fragment old = mgr.findFragmentByTag("SecondFragment");
        if (old != null) {
            ft.remove(old);
        }
        ft.addToBackStack(null);


fragment.show(ft, fragmentTag);
                          }
            }
        });

        return builder.create();
    }
}

Answer 1

我遇到了完全相同的问题，当你试图从Fragment打开DialogFragment时，这种情况不会发生。

我找到的唯一解决方案是修改以下调用：

fragment.show(ft, fragmentTag);

至：

fragment.show(getFragmentManager(), fragmentTag);

这个解决方案的问题是我们不能在FragmentTransition上工作。

我不明白为什么行为与片段不同。

Answer 2

我遇到了同样的问题，无法从第一个DialogFragment的正面和负面点击侦听器中显示另一个DialogFragment。我的解决方案是立即弹出第一个片段，这样就可以成功附加和显示第二个DialogFragment。

// Call this before adding the second dialog fragment activity.getSupportFragmentManager().popBackStackImmediate();

Answer 3

请检查以下代码。希望这能对你们中的许多人有所帮助！

public class SubcategoryFragment extends DialogFragment {

public SubcategoryFragment() {

}

public static SubcategoryFragment newInstance(Integer code, String name) {
    SubcategoryFragment fragment = new SubcategoryFragment();

    mCode = code;
    mTitle = name;
    return fragment;
}


@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
    super.onViewCreated(view, savedInstanceState);

    liststring = new ArrayList<>();

    getAdapter();

}


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

    View view = inflater.inflate(R.layout.fragment_subcategory, container, false);
    gridView = (GridView) view.findViewById(R.id.sub_grid);


    return view;

}

@Override
public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    closeDialog = (ImageView) getDialog().findViewById(R.id.closeDialog);
    title = (TextView) getDialog().findViewById(R.id.dialogTitle);
    gridView = (GridView) getDialog().findViewById(R.id.sub_grid);

    title.setText(String.format("Choose %s", mTitle));
    closeDialog.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            getDialog().dismiss();
        }
    });


}

@Override
public Dialog onCreateDialog(@NonNull Bundle savedInstanceState) {
    Dialog dialog = super.onCreateDialog(savedInstanceState);


    // request a window without the title
    dialog.getWindow().requestFeature(Window.FEATURE_NO_TITLE);

    //  closeDialog = (ImageView) dialog.findViewById(R.id.closeDialog);

    return dialog;

}



public void getAdapter() {

        gridAdapter = new HomeSubGridViewAdapter(getContext(), R.layout.gridview_custom_layout, liststring);
        gridView.setAdapter(gridAdapter);

}


}

这是从片段中调用对话框的方法

  fragmentManager = ((FragmentActivity) context).getSupportFragmentManager();
                    SubcategoryFragment postalFragment = SubcategoryFragment.newInstance(Integer.valueOf(item.getId()), item.getName());
                    postalFragment.show(fragmentManager, "SubcategoryFragment");

如果您觉得有任何问题，请随时询问