问如何拦截所有的触摸事件？

EN

@Override
public boolean dispatchTouchEvent(MotionEvent event) {
    requestDisallowInterceptTouchEvent(
            (ViewGroup) findViewById(R.id.topLevelRelativeLayout),
            true
    );
    return super.dispatchTouchEvent(event);
}

private void requestDisallowInterceptTouchEvent(ViewGroup v, boolean disallowIntercept) {
    v.requestDisallowInterceptTouchEvent(disallowIntercept);
    int childCount = v.getChildCount();
    for (int i = 0; i < childCount; i++) {
        View child = v.getChildAt(i);
        if (child instanceof ViewGroup) {
            requestDisallowInterceptTouchEvent((ViewGroup) child, disallowIntercept);
        }
    }
}

abstract class BaseDialogFragment : DialogFragment() {

    override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
        return object : Dialog(requireContext()){
            override fun dispatchTouchEvent(ev: MotionEvent): Boolean {
                // do your thing here
                return super.dispatchTouchEvent(ev)
            }
        }
    }

}