以編程方式構建工具欄

Question

我正在學習如何使用Swift，並且我意識到我無法直接將工具欄添加到具有UITableViewController的故事板中，所以我努力嘗試以編程方式添加它。

這就是我想使它看起來像：

現在，我添加以下代碼：

let homeButton = UIBarButtonItem(title: "H", style: .plain, target: self, action: #selector(ProfileButtonTapped)) 

    let addButton = UIBarButtonItem(title: "+", style: .plain, target: self, action: #selector(ProfileButtonTapped)) 

let loveButton = UIBarButtonItem(title: "Love", style: .plain, target: self, action: #selector(ProfileButtonTapped)) 

let arr: [Any] = [homeButton, addButton, loveButton] 
setToolbarItems(arr as? [UIBarButtonItem] ?? [UIBarButtonItem](), animated: true) 
super.viewDidAppear(animated) 

它看起來是這樣的：

但我找不到方法使其看起來與原稿的間距相同，而且如果我設置圖像，我沒有找到適合尺寸的方法，因爲我需要它。

我試過使用這個代碼，我發現這裏似乎工作，但是當我加載我的應用程序，它只是顯示沒有任何元素的酒吧。

navigationController?.setToolbarHidden(false, animated: true) 

let homeButn = UIImage(named: "HomeButton") 

let zeroPoint = CGPoint.zero 
let settingsButton = UIButton(type: UIButtonType.custom) as UIButton 
settingsButton.frame = CGRect(origin: zeroPoint, size: CGSize(width: 27, height: 27)) 
settingsButton.setImage(homeButn, for: []) 
settingsButton.addTarget(self, action: #selector(ProfileButtonTapped), for: UIControlEvents.touchUpInside) 

let rightBarButtonItem = UIBarButtonItem(customView: settingsButton) 
navigationItem.setRightBarButton(rightBarButtonItem, animated: true) 

我真的不知道該怎麼做，有什麼想法？非常感謝！

Answer 1

試試這個，如果有幫助：

let flexibleSpace = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.flexibleSpace, target: self, action: nil) 

let homeButton = UIBarButtonItem(title: "H", style: .plain, target: self, action: #selector(ProfileButtonTapped)) 

let flexibleSpace1 = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.flexibleSpace, target: self, action: nil) 

let addButton = UIBarButtonItem(title: "+", style: .plain, target: self, action: #selector(ProfileButtonTapped)) 

let flexibleSpace2 = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.flexibleSpace, target: self, action: nil) 

let loveButton = UIBarButtonItem(title: "Love", style: .plain, target: self, action: #selector(ProfileButtonTapped)) 

let arr: [Any] = [flexibleSpace, homeButton, flexibleSpace1, addButton, flexibleSpace2, loveButton] 

setToolbarItems(arr as? [UIBarButtonItem] ?? [UIBarButtonItem](), animated: true) 

super.viewDidAppear(animated) 

您可以在「H」太被甩在空間的左側添加靈活的空間。