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目录:[Swift]Xcode实际操作 本文将演示对导航栏进行样式设置,以及更改导航顶部的提示区. 选择编辑第一个视图控制器文件. import UIKit class FirstSubViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view. self.title = "First P