重写BottomSheetFragment中的onCancel以将State设置为COLLAPSED

Question

我正在尝试使用BottomSheetFragment实现BottomSheet，当用户在对话框外单击时，BottomSheetSFragment会折叠。我曾尝试覆盖onCancel，但将状态设置为STATE_COLLAPSED，但它不起作用——当在外部单击时，BottomSheet会消失。也有setHideable(false)。因此，我预计当用户点击外部时，底部会崩溃，但事实并非如此。我怎样才能做到这一点？

public class MyBottomSheet extends BottomSheetDialogFragment {
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        return inflater.inflate(R.layout.eazyotp_auto_capture_bottomsheet, container, false);
    }
    @Override
    public void onCancel(@NonNull DialogInterface dialog) {
        super.onCancel(dialog);
        behavior.setState(BottomSheetBehavior.STATE_COLLAPSED); // does not work
    }
    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        behavior = getDialog().getBehavior();
        behavior.setState(BottomSheetBehavior.STATE_EXPANDED);
        behavior.setHideable(false);
        behavior.setPeekHeight(70); 
       // following works well - even when user drags the bottomsheet it gets into collapsed state.
        imageView.setOnClickListener(v -> {
        if(behavior.getState() == BottomSheetBehavior.STATE_EXPANDED)
            behavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
        else
            behavior.setState(BottomSheetBehavior.STATE_EXPANDED);
    });
    }
}

此外，当我执行setCancelable(false)时，我不能在imageView 上使用折叠/展开

Answer 1

将其添加到activityCreted getDialog().setCanceledOnTouchOutside(true) 中