Change color of scrollbar

scrollbar.java

public static void changeColorScrollBar(View Scroll, int color, Context cxt){

   try
   {
      Field mScrollCacheField = View.class.getDeclaredField("mScrollCache");
      mScrollCacheField.setAccessible(true);
      Object mScrollCache = mScrollCacheField.get(Scroll);
      Field scrollBarField = mScrollCache.getClass().getDeclaredField("scrollBar");
      scrollBarField.setAccessible(true);
      Object scrollBar = scrollBarField.get(mScrollCache);
      Method method = scrollBar.getClass().getDeclaredMethod("setVerticalThumbDrawable", Drawable.class);
      method.setAccessible(true);

      Drawable[] layers = new Drawable[1];

      GradientDrawable dr = new GradientDrawable(GradientDrawable.Orientation.BOTTOM_TOP, null);
      dr.setColor(color);
      dr.setAlpha(255);
      dr.setCornerRadius((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_SP, 17, cxt.getResources()
            .getDisplayMetrics()));
      dr.setSize((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 4, cxt.getResources()
            .getDisplayMetrics()), (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 50, cxt.getResources()
            .getDisplayMetrics()));

      ShapeDrawable sd1 = new ShapeDrawable(new RectShape());
      sd1.getPaint().setColor(color);
      sd1.setIntrinsicWidth((int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 3, cxt.getResources()
            .getDisplayMetrics()));
      layers[0] = dr;

      method.invoke(scrollBar, layers);
   }
   catch(Exception e)
   {
      e.printStackTrace();
   }
}