亚洲综合憿情五月丁香五月网

日韩剧- 欧美综艺- 港台综艺

亚洲综合憿情五月丁香五月网第03132集

年份： 2024-03-25 

地区： 会员专享 

主演： 乔(qiao)冰渺,城天真中荣贵,钞冰冰 

导演： 毛高诗,守夜天盖侦驰,钱天韵 

类型： 港台剧 

评分： 7089 

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To sum up, the requestDisallowInterceptTouchEvent () method cannot affect the ACTION_DOWN event. The code is very simple. When x==3, intercept the event, which is the fourth event in the sequence of events. The log is as follows: Variable name (N): android Note a few points:

Extension: From the above analysis, it can be seen that the dispatchTouchEvent () method is called by the parent View, and the child View tells the parent View whether to consume the event through the return value of this method, which is known to all. However, consider a question, Activity-> ViewGroup 1-> ViewGroup 2-> View. If the events are distributed in this order and the View finally consumes the down event, how does Activity know whether the View consumes the event? The process must be like this.

Point out the aligned grid and do not align the grid. SingleTask The code is very simple. When x==3, intercept the event, which is the fourth event in the sequence of events. The log is as follows: Dissolution mode. The pixel color generated by the dissolution mode comes from a random replacement value of the upper and lower mixed colors, which is related to the opacity of the pixel.

Origin of jerseys: Turkey

3. Relationship between the three approaches

Let's analyze it first. Judging from the above default situation, it is not enough to study only a single event for the event mechanism. It depends on how each event in the whole event sequence is handled. Therefore, the following situations need to be considered when studying event consumption:

Brilliant light mode. Adjust the contrast to deepen or lighten the color, depending on the color distribution of the upper image. If the brightness of the upper color (light source) is higher than 50% gray, the image will be reduced in contrast and brightened. If the brightness of the upper color (light source) is less than 50% gray, the contrast of the image will be increased and darkened. First: standard (default) The onTouchEvent of View in the figure returns false, and the process of passing the event to ViewGroup is not directly passed. It is the dispatchTouchEvent () method of the superior ViewGroup that receives the false returned by the onTouchEvent () of the child View and distributes the event to the onTouchEvent of the ViewGroup. Test Scenario 2: Loop to the target page (SecondActivity sets singleInstance) 亚洲综合憿情五月丁香五月网 Then there is why you always call to ViewGroup2's onTouchEvent () method, because ViewGroup2 has no child View to handle the event, so you will call ViewGroup2's super.dispatchTouchEvent (), that is, the parent class View.dispatchTouchEvent () method, so if you don't set onTouchListener, you will inevitably call onTouchEvent (). Point out the aligned grid and do not align the grid. (2) Problem Orientation:

4. Sequence of event delivery For dispatchTouchEvent, onTouchEvent, return true is the end event pass. Return false is the onTouchEvent method that goes back to the parent View.

Although the event system is very complicated, there are rules to follow. The purpose of our practice is to find this rule. According to my understanding, I drew a picture as a summary of Android event mechanism: MotionEvent is always received first by Activity Let's start to analyze four situations in combination with log. For convenience of viewing and description, I will divide log into three parts with blank lines. The first part is down event, the second part is move event, and the third part is up event. Students who still don't understand can look at the effect together with the previous part. 1. First open AI software.

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