android - Auto-moving image on drag listener -

i set drag listener imageview in app, when click it, don't want center image based on pressed. this:

https://gfycat.com/constantdisguisedkudu

basically, if press on bottom right of image, takes press central point , moves image's center point on exact location. don't want that. if press on bottom right , shouldn't auto move , can drag image point. don't think code necessary in case:

@override public boolean ondrag(view v, dragevent event) {     switch (event.getaction()) {         // signal start of drag , drop operation         case dragevent.action_drag_started: {             // nothing             break;         }         // drag point has entered bounding box of view         case dragevent.action_drag_entered: {             // nothing             break;         }         // user has moved drag shadow outside bounding box of view         case dragevent.action_drag_exited: {             // nothing             break;         }         // drag shadow has been released, drag point within bounding box of view         case dragevent.action_drop: {             // image , position             imageview view = (imageview) event.getlocalstate();             int position = (int) view.gettag(r.id.piece_position);              /**              * if dropped on left pane, remove parent ,              * remove bitmap @ position , notify adapter.              * add left pane , set position.              */             if (v == puzzlepane) {                 viewgroup viewgroup = (viewgroup) view.getparent();                 viewgroup.removeview(view);                  if (position != -1) {                     pieces.remove(position);                     madapter.notifydatasetchanged();                 }                  framelayout containview = (framelayout) v;                 containview.addview(view);                 view.setvisibility(view.visible);                 view.settag(r.id.piece_state, "left");                 view.settag(r.id.piece_position, -1);                 view.setonlongclicklistener(null);                 view.setontouchlistener(madapter);             } else {                 view.setvisibility(view.visible);                 view.settag(r.id.piece_state, "right");                 view.setontouchlistener(null);                 view.setonlongclicklistener(madapter);             }              log.d(mydraglistener.class.getsimplename(), view.gettag(r.id.piece_state) + "");              view.setx(event.getx() - (view.getwidth() / 2));             view.sety(event.gety() - (view.getheight() / 2));              break;         }         // drag , drop operation has concluded         case dragevent.action_drag_ended: {             // nothing             break;         }     }     return true; } 

you need extend view.dragshadowbuilder , , send location of finger relative continer. that:

//where trigger dragging view yourimage; //  yourimage.setontouchlistener(new ontouchlistener() {     @override     public boolean ontouch(view v, motionevent event) {         final clipdata dragdata = new clipdata("label", new string[]{clipdescription.mimetype_text_plain}, null);         startdrag(dragdata,  // data dragged                 new mydragshadowbuilder(v, event.getx(), event.gety()), // drag shadow builder                 null,                 0          // flags (not used, set 0)         );         return true;     } }); 

and class:

private static class mydragshadowbuilder extends view.dragshadowbuilder {      int width, height, relativex, relativey;      public mydragshadowbuilder(view v, float relativex,float relativey) {         super(v);         this.relativex = (int) relativex;         this.relativey = (int) relativey;         width = (v.getwidth());         height = (v.getheight());     }      @override     public void onprovideshadowmetrics (@nonnull point size, @nonnull point touch){         size.set(width, height);         touch.set(relativex, relativey);     }  }