iOS 去掉UISearchBar 的上下两条线

我用的是searchbar  并且在页面上直接显示搜索出来的答案,把searchbar的背景色换掉后会有两条线 

UIImageView *barImageView = [[[_XJSearchBar.subviews firstObject] subviews] firstObject];

    barImageView.layer.borderColor = [UIColor colorWithRed:245.0/255.0 green:245.0/255.0 blue:245.0/255.0 alpha:1.0].CGColor;

    barImageView.layer.borderWidth=1;

把这个颜色换成你想要的颜色就OK