如何在对话框片段中使用共享元素过渡

Question

我正在使用导航组件。从片段的RecyclerView中，我希望将ImageView设置为DialogFragment的动画。

sdvPhoto.setOnClickListener(view -> {

                    Bundle args = new Bundle();
                    args.putString("ImageFilePath", image.getAbsolutePath());
                    args.putString("transition_name", "photo_" + getAdapterPosition());

                    ViewCompat.setTransitionName(sdvPhoto, "photo_" + getAdapterPosition());

                    DialogFragmentNavigator.Extras extras = new FragmentNavigator.Extras.Builder()
                            .addSharedElement(sdvPhoto, "photo_" + getAdapterPosition())
                            .build();

                    Navigation.findNavController(parentFragment.getView()).navigate(R.id.action_chatFragment_to_imageViewFragment, args, null, extras);
                });

然后在DialogFragment中执行此操作...

    @Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
    baseViewFragmentImageView = inflater.inflate(R.layout.fragment_image_view, container, false);
    unbinder = ButterKnife.bind(this, baseViewFragmentImageView);
    getDialog().getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));

    if (bundle != null) {
        iv.setPhotoUri(Uri.fromFile(new File(bundle.getString("ImageFilePath"))));
        iv.setTransitionName(bundle.getString("transition_name"));
        ViewCompat.setTransitionName(iv, bundle.getString("transition_name"));
    }

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
        TransitionSet transitionSet = new TransitionSet();
        transitionSet.addTransition(new ChangeBounds());
        transitionSet.addTarget(iv);
        getDialog().getWindow().setSharedElementEnterTransition(transitionSet);
        this.setSharedElementReturnTransition(new ImageTransition());
    }
    return baseViewFragmentImageView;
}

这适用于片段到片段，但是我不想使用DialogFragment来做。

Answer 1

DialogFragment不支持共享元素转换，因为Fragment共享元素转换仅在同一窗口（与对话框，是一个单独的窗口）内进行转换。不幸的是，导航并不能改变这一事实。