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这里草图:如何使空间的导航栏和时间之间迅速
而且我当前的代码:
let screenSize: CGRect = UIScreen.main.bounds
let navBar = UINavigationBar(frame: CGRect(x: 0, y: 0, width: screenSize.width, height: 80.0))
let navItem = UINavigationItem(title: "")
let doneItem = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.done, target: nil, action: #selector(done))
navItem.leftBarButtonItem = doneItem
navBar.setItems([navItem], animated: false)
self.view.addSubview(navBar)