Silicon Valley News 5--Top News Carousel Event handling

Rewrite the dispatchtouchevent, and GetParent (). Requestdisallowintercepttouchevent (True) when pressed.

Determine the sliding direction, the absolute value of sliding in the X-and y-axis who is big is sliding in what direction

One, Slide getParent () in the vertical direction. Requestdisallowintercepttouchevent (FALSE);

Two, horizontal direction sliding

2.1, when sliding to the No. 0 page of Viewpager, and is sliding from left to right getParent (). Requestdisallowintercepttouchevent (false);

2.2, when sliding to the last page of Viewpager, and is sliding from right to left getParent (). Requestdisallowintercepttouchevent (false); 2.3, other getParent (). Requestdisallowintercepttouchevent (True);

 Public classHorizontalscrollviewpagerextendsViewpager { PublicHorizontalscrollviewpager (Context context) {Super(context); }     PublicHorizontalscrollviewpager (Context context, AttributeSet attrs) {Super(context, attrs); }    /*** Starting coordinates*/    Private floatStartX; Private floatStarty; @Override Public Booleandispatchtouchevent (motionevent ev) {Switch(Ev.getaction ()) { CaseMotionevent.action_down://requests that the parent layer view does not intercept the current control's eventsGetParent (). Requestdisallowintercepttouchevent (true);//passes events to the current control (Horizontalscrollviewpager)//1. Record the starting coordinatesStartX =Ev.getx (); Starty=ev.gety ();  Break;  CaseMotionevent.action_move://2. Come to the new coordinates                floatEndX =Ev.getx (); floatEndY =ev.gety (); //3. Calculate the offset                floatDistancex = EndX-StartX; floatDistancey = EndY-Starty; //4. Determine the direction of the slide                if(Math.Abs (Distancex) >Math.Abs (Distancey)) {                    //Slide Horizontally//2.1, when sliding to the No. 0 page of Viewpager, and is sliding from left to right//getParent (). Requestdisallowintercepttouchevent (false);                    if(Getcurrentitem () ==0&&distancex >0) {getParent (). Requestdisallowintercepttouchevent (false); }//2.2, when sliding to the last page of Viewpager, and is sliding from right to left//getParent (). Requestdisallowintercepttouchevent (false);                    Else if((getcurrentitem () = = (Getadapter (). GetCount ()-1)) && Distancex <0) {getParent (). Requestdisallowintercepttouchevent (false); }//2.3, other, middle section//getParent (). Requestdisallowintercepttouchevent (true);                    Else{getParent (). Requestdisallowintercepttouchevent (true); }                }Else{                    //slide in the vertical directionGetParent (). Requestdisallowintercepttouchevent (false); }                 Break;  Casemotionevent.action_up: Break; default:                 Break; }        return Super. dispatchtouchevent (EV); }}

Silicon Valley News 5--Top News Carousel Event handling