iOS更改导航栏标题字体和颜色

iOS是一款非常流行的移动操作系统，它的用户界面设计非常精美，其中导航栏是每个应用程序中都不可或缺的一部分。导航栏的标题字体和颜色对于应用程序的整体风格和用户体验起着至关重要的作用。在本文中，我们将介绍如何通过代码来改变iOS导航栏的标题字体和颜色，并给出一些实际案例来帮助读者更好地理解。

swift
let attributes = [
    NSAttributedString.Key.font: UIFont(name: "Helvetica-Bold", size: 20)!,
    NSAttributedString.Key.foregroundColor: UIColor.red
]
UINavigationBar.appearance().titleTextAttributes = attributes

swift
let attributes = [
    NSAttributedString.Key.font: UIFont(name: "Helvetica-Bold", size: 20)!,
    NSAttributedString.Key.foregroundColor: UIColor.red
]
navigationController?.navigationBar.titleTextAttributes = attributes

swift
import UIKit
class ViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let attributes = [
            NSAttributedString.Key.font: UIFont(name: "Helvetica-Bold", size: 20)!,
            NSAttributedString.Key.foregroundColor: UIColor.red
        ]
        navigationController?.navigationBar.titleTextAttributes = attributes
    }
}