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);
        }
    }