android - i want to draw a simple line from one image to other where drag and drop the image -


this question same duplicate of https://stackoverflow.com/questions/11488357/android-drag-a-drawn-line-to-new-location-erasing-pixels-at-previous-locations

i'm using drag , drop , i'm making matching concept , drag image left right, when answer correct , @ there want draw line left right , use many things like

public class dragtesting extends activity implements ontouchlistener{  protected void oncreate(bundle savedinstancestate) {     // todo auto-generated method stub     super.oncreate(savedinstancestate);     this.requestwindowfeature(window.feature_no_title);     this.getwindow().setflags(windowmanager.layoutparams.flag_fullscreen, windowmanager.layoutparams.flag_fullscreen);     setcontentview(r.layout.drag);         viewgroup dlayout = (viewgroup)findviewbyid(r.id.dlayout);   dlayout.setontouchlistener(new ontouchlistener() {          @override         public boolean ontouch(view paramview, motionevent parammotionevent) {             // todo auto-generated method stub             if(touchflag==true){  switch (parammotionevent.getactionmasked())                  { case motionevent.action_down :  //getting positions break;   case motionevent.action_up: break;    canvas canvas = new canvas();   paint paint = new paint(); paint.setstyle(paint.style.stroke); paint.setstrokewidth(2); paint.setcolor(color.green); canvas.drawcolor(color.blue);  canvas.drawline(offset_x, offset_y, currentx, currenty, paint);    break;                 default:                     break;                 }            }             return true;         }     }); @override public boolean ontouch(view paramview, motionevent parammotionevent) {     // todo auto-generated method stub     switch (parammotionevent.getactionmasked())      {     case motionevent.action_down:         touchflag=true;         offset_x = (int) parammotionevent.getx();         offset_y = (int) parammotionevent.gety();        // tagvalue = (integer) paramview.gettag();         selected_item =  paramview;         imageparams=paramview.getlayoutparams();         break;     case motionevent.action_up:         selected_item=null;         touchflag=false;         break;     default:         break;     }            return false; }

this not working , me

i have extends relative layout , make design time view file, use draw line between image views , helps me, not right answer thats y m not accept other answer, m sory that


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