android - 如何将自定义动画设置到设计库BottomSheetDialogFragment android

Question

我被动画困住了。我将此动画设置为支持库 MyBottomSheetDialogFragment

我试试

@Override
    public Animation onCreateAnimation(int transit, boolean enter, int nextAnim) {
        return super.onCreateAnimation(R.anim.activity_back_in, enter, R.anim.activity_back_out);
    }

和

@Override
    public void setupDialog(final Dialog dialog, int style) {
        super.setupDialog(dialog, style);
        View view = View.inflate(getContext(), R.layout.sheet_user_detail, null);
        view.setAnimation(AnimationUtils.loadAnimation(getContext(),R.anim.activity_back_in));
        dialog.setContentView(view);

        mBehavior = BottomSheetBehavior.from((View) view.getParent());

        mBehavior.setBottomSheetCallback(mBottomSheetBehaviorCallback);
    }

无法正常工作。