UIBarButtonItem（customView :) - 不可点击

Question

我在viewDidLoad中有以下内容。它设置了自定义rightBarButtonItem（在自定义UINavigationBar中）。

    let button = UIButton()
    let attrs = [NSFontAttributeName: UIFont(name: "Montserrat-Light", size: 14)!, NSForegroundColorAttributeName: UIColor.black]
    let title = NSAttributedString(string: "Sign In", attributes: attrs)
    button.setAttributedTitle(title, for: .normal)
    button.addTarget(self, action: #selector(self.pushVcLogin), for: .touchUpInside)

    let parentView = UIView(frame: button.bounds)
    parentView.addSubview(button)
    button.sizeToFit()
    parentView.bounds = CGRect(x: 0, y: 0, width: button.bounds.size.width, height: button.bounds.size.height)

    self.navItem.rightBarButtonItem = UIBarButtonItem(customView: parentView)

自定义UIBarButtonItem看起来应该如此，但它不可用。

有什么想法吗？

Answer 1

首先，如果您的视图层次结构具有UINavigationController

其次，您可以使用navigationItem并在其上添加自定义UIBarButtonItem。

我刚刚使用以下代码检查过它。

    let button = UIButton()        
    let attrs = [NSFontAttributeName: UIFont(name: "Montserrat-Light", size: 14)!, NSForegroundColorAttributeName: UIColor.black]
    let title = NSAttributedString(string: "Sign In", attributes: attrs)
    button.setAttributedTitle(title, for: .normal)
    button.addTarget(self, action: #selector(self.pushVcLogin), for: .touchUpInside)

    let parentView = UIView(frame: button.bounds)
    parentView.addSubview(button)
    button.sizeToFit()
    parentView.bounds = CGRect(x: 0, y: 0, width: button.bounds.size.width, height: button.bounds.size.height)

    self.navigationItem.rightBarButtonItem = UIBarButtonItem(customView: parentView)

这里也是故事板图像，navController和viewController的外观如何。