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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.胡宗宪终于振奋了一些，岑港贼寇。View Event Execution Results: This attribute needs to configure the value of taskAffinity in the AndroidManifest.xml file of the target activity to be started "must be different from the package name of the startActivity sender activity, and taskAffinity can be omitted if jumping to another App", which will press the activity into the taskAffinity where the newly marked Affinity exists.讲述了1937年7月7日中国抗日战争全面爆发后，三个不同出身姑娘在民族存亡关头，毅然走上前线，肩负起抗日救亡的重任；在解放战争中，她们巾帼不让须眉，带领后方广大妇女筹集干粮赶做军鞋，运送粮食、和军需物资，积极支援解放前线。① INFOAnd this perspective is often smaller than you think.