java - Android: Reporting drop result: false -

i wanted programm drag , drop button wich can move want. tryed ondrag(), if want drop button message: "reporting drop result: false " dont know why. other problem shadowbuilder disappear if drop button. want convert shadow normal button if drop it.

i'll grateful, if me.

@override public boolean onlongclick(view v) {     clipdata clipdata = clipdata.newplaintext("", "");     view parent = (view) v.getparent();     parent.setvisibility(view.invisible);     view.dragshadowbuilder shadowbuilder = new view.dragshadowbuilder((view) v.getparent());     v.startdrag(clipdata, shadowbuilder,parent, 0);      return true; }   @override public boolean ondrag(view v, dragevent event) {       int dragaction = event.getaction();        if (dragaction == dragevent.action_drag_started) {           if (event.getclipdescription().hasmimetype(clipdescription.mimetype_text_plain)) {             //returns true, when view can view of onlongclick             log.e("drag start", "drag started");          }         return true;      } else {          if (event.getaction() ==   dragevent.action_drop){             v.setvisibility(view.visible);      }       return true; } 

it not enough override ondrag method, please follow stepsdescribed in official example on android developers: https://developer.android.com/guide/topics/ui/drag-drop.html

you need set drag listener, superclass of view can override ondrag!?