如何在導航欄上添加按鈕iOS Swift

Question

我的目標是在導航欄中間添加一個按鈕

override func viewDidLoad() {
        super.viewDidLoad()
        // What should I add here?
    }

Answer 1

采用

let button = UIButton(frame: CGRect(x: 0, y: 0, width: 30, height: 30))
button.setImage(UIImage(named: "ur_image.png"), for: .normal)
self.navigationItem.titleView = button

確保您的VC嵌入在UINavigationController中：)

Answer 2

斯威夫特3.0

希望對您有幫助。 並且不要忘記將目標添加到UIButton 。

    let headerView = UIButton.init(frame: CGRect(x: 0, y: 0, width: 30, height: 25))
    headerView.setImage(UIImage(named: "btn_image.png"), for: .normal)
    headerView.addTarget(self, action: #selector(self.powerButtonTapped(_:)), for: .touchUpInside)
    self.navigationItem.titleView = headerView

像這樣添加按鈕動作：

func powerButtonTapped(_ sender: UIButton) {

    //Do your stuff here
}

Answer 3

您必須將導航項標題視圖設置為按鈕對象

let powerButton =  UIButton(type: .custom)
powerButton.frame = CGRect(x: 0, y: 0, width: 100, height: 40)
powerButton.setImage(UIImage(named: "power.png"), for: .normal)
powerButton.addTarget(self, action: #selector(self.clickOnPowerButton), for: .touchUpInside)
self.navigationItem.titleView = powerButton 

點擊時

func clickOnPowerButton(button: UIButton) {
   // do your stuffs
}

Answer 4

let imageView = UIImageView(image: UIImage(named: "myImage"))
    imageView.contentMode = UIViewContentMode.scaleAspectFit
let titleView = UIView(frame: CGRect(x: 0, y: 0, width: 30, height: 30))
    imageView.frame = titleView.bounds
    titleView.addSubview(imageView)
self.navigationItem.titleView = titleView

Answer 5

使用UINavigationItem titleView屬性在導航欄的中心顯示titleView 。

自定義視圖可以是按鈕，因此您需要創建一個UIButton並將其設置為titleView 。

其他答案中給出了所需的代碼，我將向您介紹文檔 。 始終最好在實施之前閱讀文檔。

Answer 6

  let lButton = UIButton()
        lButton.setTitle("Test Button", for: .normal)
        lButton.frame = CGRect(x:20, y: 0, width: self.view.frame.size.width - 50, height: 50)
        lButton.backgroundColor = UIColor.green
        lButton.setTitleColor(UIColor.red, for: .normal)
        lButton.addTarget(self, action: #selector(self.locationChangeAction), for: .touchUpInside)
       self.navigationController?.navigationBar.addSubview(lButton)