删除导航标题中搜索栏中的边框

Question

我的导航栏看起来像下面附带的图像。如何删除黑色边框？

我生成的代码如下：

    var searchBar : UISearchBar = UISearchBar(frame: CGRectMake(-5, 0, 320, 44))
    searchBar.autoresizingMask = UIViewAutoresizing.FlexibleWidth
    searchBar.layer.borderWidth = 1
    searchBar.searchBarStyle = UISearchBarStyle.Minimal


    var searchBarView : UIView = UIView(frame: CGRectMake(0, 0, 310, 44))
    searchBarView.autoresizingMask = nil
    searchBarView.layer.borderWidth = 0;
    searchBarView.layer.borderColor = UIColor.clearColor().CGColor

   searchBar.delegate = self;
   searchBarView.addSubview(searchBar)

Answer 1

也许你也在视图上做了什么，

searchBar.layer.borderColor = UIColor.clearColor().CGColor