在标签栏和标签栏项之间添加子视图

Question

我在制作编程设计方面很陌生，而且我坚持不懈。 所以我有以下代码，我在其中创建一个新视图，我实际上想要放置在我的图标和标签栏的背景之间。

      let tabBarItem1 = myTabBar.items![0] as UITabBarItem
    let tabBarItem2 = myTabBar.items![1] as UITabBarItem
    let tabBarItem3 = myTabBar.items![2] as UITabBarItem
    let tabBarItem4 = myTabBar.items![3] as UITabBarItem

    tabBarItem1.selectedImage = UIImage(named: "image1")!.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal)
    tabBarItem2.selectedImage = UIImage(named: "image2")!.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal)
    tabBarItem3.selectedImage = UIImage(named: "image3")!.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal)
    tabBarItem4.selectedImage = UIImage(named: "image4")!.imageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal)


    let viewSelected = UIView(frame: CGRectMake(30, 5, 40, 40))
    viewSelected.backgroundColor = UIColor.whiteColor()
    viewSelected.layer.cornerRadius = 4
    //layer.borderColor = UIColor.whiteColor().CGColor
    //layer.borderWidth = 2
    viewSelected.layer.masksToBounds = true

    // add subview to tabBarController?.tabBar
    myTabBar.addSubview(viewSelected)

目前，当我添加子视图时，我得到以下结果

问题是我希望将此视图置于图标（现在位于视图后面）和背景之间。谢谢！

Answer 1

替换addSubview所在的行：

myTabBar.insertSubview(viewSelected, belowSubview: myTabBar.subviews.first!)

它应该做的工作！