Android - NumberPicker scroll / fling faster -

how can make number picker scroll/fling faster? takes effort going 00 minute 59 minute. i've tried example slowing speed of viewpager controller in android , applied opposite of number picker, don't see difference.

try {         field mscroller;         mscroller = numberpicker.class.getdeclaredfield("mflingscroller");         mscroller.setaccessible(true);         fixedspeedscroller scroller = new fixedspeedscroller(getcontext(),null,true);          // scroller.setfixedduration(5000);         // scrollby(0,1500);          log.v("scroller",""+mscroller); //getting mflingscroller field         mscroller.set(this, scroller);      } catch (nosuchfieldexception | illegalargumentexception | illegalaccessexception e) {         e.printstacktrace();     }  public class fixedspeedscroller extends scroller {      private int mduration = 10;      public fixedspeedscroller(context context) {         super(context);     }      public fixedspeedscroller(context context, interpolator interpolator) {         super(context, interpolator);     }      public fixedspeedscroller(context context, interpolator interpolator, boolean flywheel) {         super(context, interpolator, flywheel);     }       @override     public void startscroll(int startx, int starty, int dx, int dy, int duration) {         // ignore received duration, use fixed 1 instead         super.startscroll(startx, starty, dx, dy, mduration);     }      @override     public void startscroll(int startx, int starty, int dx, int dy) {         // ignore received duration, use fixed 1 instead         super.startscroll(startx, starty, dx, dy, mduration);     } } 

i decreased mduration lower example(5000). still having no hope. appreciated. in advance!!! :)