旧版Android设备的setFinishOnTouchOutside的替代品？

public class MyDialogFragment extends DialogFragment {
    @Override
    public void onCancel(@NonNull DialogInterface dialog) {
        super.onCancel(dialog);
        // 在这里处理对话框取消操作
    }

    @Override
    public void onStart() {
        super.onStart();
        Dialog dialog = getDialog();
        if (dialog != null) {
            Window window = dialog.getWindow();
            if (window != null) {
                window.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
                window.setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
            }
        }
    }
}