从Fragment调用DialogFragment(不是FragmentActivity)? [英] Calling DialogFragment from Fragment (not FragmentActivity)?

问题描述

我确实有一个FragmentActivity，其中包含一个Fragment列表(带有在它们之间导航的方法). 在那些片段之一中，我需要调用DialogFragment来显示"zoom".在该片段中包含的图片上.

I do have a FragmentActivity which contains a Fragment list (with methods to navigate between them). In one of those fragments I need to call a DialogFragment to display a "zoom" on a Picture contained in that fragment.

但是似乎您不能直接从Fragment调用DialogFragment.

But it seems that you can't call a DialogFragment directly from a Fragment.

有没有办法得到某种回叫"?到FragmentActivity，以使其在片段上方显示DialogFragment.

Is there any way to get some kind of "callback" to the FragmentActivity to make this display the DialogFragment over the fragment.

或者只是一个小故障"直接从Fragment调用它.

Or simply a "glitch" to call it directly from the Fragment.

如果是这种情况，我有什么选择?

If that is the case what are my options?

推荐答案

创建新的Dialog时，可以使用Fragment中的这个(非常)简单的方法来简单地调用它.

When you create a new Dialog, you can simply call it using this (very) simple method from a Fragment.

DialogFragment dialog = DialogFragment.instantiate(getActivity(), "Hello world");
dialog.show(getFragmentManager(), "dialog");

如果要使用自己的对话框，请使用这种代码.

If you want to use your own dialog, please use that kind of code.

public class MyDialogFragment extends DialogFragment
{
    //private View pic;

    public MyDialogFragment()
    {
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState)
    {
        View view = getActivity().getLayoutInflater().inflate(R.layout.fragment_my_dialog, new LinearLayout(getActivity()), false);

        // Retrieve layout elements
        TextView title = (TextView) view.findViewById(R.id.text_title);

        // Set values
        title.setText("Not perfect yet");

        // Build dialog
        Dialog builder = new Dialog(getActivity());
        builder.requestWindowFeature(Window.FEATURE_NO_TITLE);
        builder.getWindow().setBackgroundDrawable(new ColorDrawable(android.graphics.Color.TRANSPARENT));
        builder.setContentView(view);
        return builder;
    }
}

这篇关于从Fragment调用DialogFragment(不是FragmentActivity)?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！