horizontalScrollView做滑动标签时的移动

/**
	 * @param position
	 * @return 改变页面时，需要滚动tab标签的长度
	 */
	public int getMoveWidth(int page){
		 View checkView = radioGroup.getChildAt(page);
         int k = checkView.getMeasuredWidth();
         int l = checkView.getLeft();
         int width = l + k / 2 - displayMetrics.widthPixels / 2;
         return width;
	}

horizontalScrollView.smoothScrollTo(getMoveWidth(previousPage), 0);