Android - BottomSheetDialogFragm

如题，解决如下
在onCreateView中加入

        //设置默认弹窗预览高度
        Dialog baseDialog = getDialog();
        if (baseDialog instanceof BottomSheetDialog) {
            BottomSheetDialog dialog = (BottomSheetDialog) baseDialog;
            BottomSheetBehavior<?> behavior = dialog.getBehavior();
            behavior.setPeekHeight(dp2px(requireContext(), 560), false);
        }

560 - 高度，具体高度需要自己算哈