android - Using Listview in a scroll view -


In my app I scrolled inside the scrollview layout (the root layout). When I did this, I found a solution code for it 

  childlistview.setOnTouchListener (New ListView.OnTouchListener () {@ Override Public Boolean On-Touch (see We, Motion Event Event) { / TODO auto-generated method stub int Action = event.getAction (); switch (action) {case MotionEvent.ACTION_DOWN: v.getParent (). RequestDisallowInterceptTouchEvent (true); break; Case MotionEvent.ACTION_UP: v.getParent ( ). RequestDisallowInterceptTouchEvent (false); break;} V.onTouchEvent (event); return back;}});   
 The solution to this problem. But I can not understand this code Can anyone help?   
 
 
 In your case,  scrollview  is original, while  ListView < / code> is her child.  
 So, in the normal case when you try to scroll,  ScrollView  will stop the event and scroll to  ScrollView . It will not reach within  ListView  because it is already handlled by parent  ScrollView .  
 However, when you set  TouchListener  override the child  list view  and its  onTouch () , as you Have done, a different behavior is seen.  
  Case motion event. Action_DOWN:   
 This event occurs when the first finger is pressed on the screen.  
  v .getParent () requestDisallowInterceptTouchEvent (true);   
 This will prevent the parents from blocking the touch event, so that the child can handle the incident properly.  
  Case motion event. Action_UP:   
 This event occurs when all fingers are away from the screen.  
  v.getParent (). RequestDisallowInterceptTouchEvent (wrong);   
 It will then allow parents to keep touch events in the middle, leaving the child-vision for the rest of the screen.  
 Hope this will help you.

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