是否使用导航栏或创建自定义类将自定义工具栏添加到swift中的每个视图？

override func viewDidLoad() {
    super.viewDidLoad()
    
    // 创建导航栏
    let navBar = UINavigationBar(frame: CGRect(x: 0, y: 0, width: view.frame.width, height: 44))
    view.addSubview(navBar)
    
    // 创建导航栏项
    let navItem = UINavigationItem(title: "标题")
    
    // 创建右侧按钮
    let rightButton = UIBarButtonItem(title: "按钮", style: .plain, target: self, action: #selector(rightButtonTapped))
    navItem.rightBarButtonItem = rightButton
    
    // 将导航栏项添加到导航栏
    navBar.items = [navItem]
}

@objc func rightButtonTapped() {
    // 右侧按钮点击事件
}

override func viewDidLoad() {
    super.viewDidLoad()
    
    // 创建工具栏
    let toolbar = UIToolbar(frame: CGRect(x: 0, y: view.frame.height - 44, width: view.frame.width, height: 44))
    view.addSubview(toolbar)
    
    // 创建工具栏项
    let flexibleSpace = UIBarButtonItem(barButtonSystemItem: .flexibleSpace, target: nil, action: nil)
    let button1 = UIBarButtonItem(title: "按钮1", style: .plain, target: self, action: #selector(button1Tapped))
    let button2 = UIBarButtonItem(title: "按钮2", style: .plain, target: self, action: #selector(button2Tapped))
    
    // 将工具栏项添加到工具栏
    toolbar.items = [button1, flexibleSpace, button2]
}

@objc func button1Tapped() {
    // 按钮1点击事件
}

@objc func button2Tapped() {
    // 按钮2点击事件
}