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When x=3, ViewGroup2 has already blocked the event when x=3. Why did MyView still receive an event? If the action value of this event received by MyView is printed out with log, it is found to be ACTION_CANCEL, which indicates that this event has ended for non-human reasons. Let me give an example of the ACTION_CANCEL event. Generally, when we handle the event, we will record something in the down event and then clear the record in the up event. If you have a Button in ListView, When we hold down the Button, the button receives the down event. At this moment, the finger starts to slide, and the event will be intercepted by ListView. At this time, the button will never receive the up event again. However, when ListView intercepts the event, the button will receive the cancel event, indicating that the event is ended for non-human reasons. Therefore, Cancel can do what the up event wants to do at this time.果然看见亭子里有两个人。赵耘这时开口道：王爷，先请王相爷等人做见证。我就是……就是觉得，要不是因为打仗，我就不会……说着说着，小嘴一瘪，眼圈一红。清朝年间，江南私盐贩活动猖獗，清政府三令五申，扬州官府不得不认真“围剿”。