ListView自定义滑动条

 /**
      * 修改默认滑动条
      */
     private void SetSliderIcon() {
         try {
             Field f = AbsListView.class.getDeclaredField("mFastScroller");
             f.setAccessible(true);
             Object o = f.get(ListView1);
             f = f.getType().getDeclaredField("mThumbDrawable");
             f.setAccessible(true);
             Drawable drawable = (Drawable) f.get(o);
             drawable = getResources().getDrawable(R.drawable.ic_launcher);
             f.set(o, drawable);
         } catch (Exception e) {
             throw new RuntimeException(e);
         }
     }