Swift_UIButton

1.初始化

        /**
         UIButtonType.system：前面不帶圖標，默認文字顏色爲藍色，有觸摸時的高亮效果
         UIButtonType.custom：定製按鈕，前面不帶圖標，默認文字顏色爲白色，無觸摸時的高亮效果
         UIButtonType.contactAdd：前面帶「+」圖標按鈕，默認文字顏色爲藍色，有觸摸時的高亮效果
         UIButtonType.detailDisclosure：前面帶「!」圖標按鈕，默認文字顏色爲藍色，有觸摸時的高亮效果
         UIButtonType.infoDark：爲感嘆號「!」圓形按鈕
         UIButtonType.infoLight：爲感嘆號「!」圓形按鈕
         （注意：自ios7起，infoDark、infoLight、detailDisclosure效果都是同樣的）
         */
        let buttonOne = UIButton.init(type: UIButtonType.custom)

2. 設置

        /**
         normal
         highlighted
         disabled
         selected
         */
        buttonOne.setTitle("這個是一個button", for: UIControlState.normal)
        buttonOne.setImage(UIImage.init(named: "1.jpg"), for: UIControlState.normal)
        
        // 設置背景顏色
        buttonOne.setBackgroundImage(UIImage.init(named: "2"), for: UIControlState.normal)
        
        // 點擊事件
        buttonOne.addTarget(self, action: #selector(buttonOneClicked), for: UIControlEvents.touchUpInside)

3.代碼

import UIKit

let kScreenWidth = UIScreen.main.bounds.size.width


class ViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        
        self.addButtonOne()
    }
    
    
    func addButtonOne() {
        
        self.view.addSubview(buttonOne)
    }
    
    func buttonOneClicked()  {
        print("點擊了")
    }
    
    // 懶加載一個UIButton
    lazy var buttonOne: UIButton = {

        /**
         UIButtonType.system：前面不帶圖標，默認文字顏色爲藍色，有觸摸時的高亮效果
         UIButtonType.custom：定製按鈕，前面不帶圖標，默認文字顏色爲白色，無觸摸時的高亮效果
         UIButtonType.contactAdd：前面帶「+」圖標按鈕，默認文字顏色爲藍色，有觸摸時的高亮效果
         UIButtonType.detailDisclosure：前面帶「!」圖標按鈕，默認文字顏色爲藍色，有觸摸時的高亮效果
         UIButtonType.infoDark：爲感嘆號「!」圓形按鈕
         UIButtonType.infoLight：爲感嘆號「!」圓形按鈕
         （注意：自ios7起，infoDark、infoLight、detailDisclosure效果都是同樣的）
         */
        let buttonOne = UIButton.init(type: UIButtonType.custom)
        
        
        buttonOne.frame = CGRect.init(x: 10, y: 100, width: kScreenWidth - 20, height: 40)
        buttonOne.backgroundColor = UIColor.red
        
        
        /**
         normal
         highlighted
         disabled
         selected
         */
        buttonOne.setTitle("這個是一個button", for: UIControlState.normal)
        buttonOne.setImage(UIImage.init(named: "1.jpg"), for: UIControlState.normal)
        
        // 設置背景顏色
        buttonOne.setBackgroundImage(UIImage.init(named: "2"), for: UIControlState.normal)
        
        // 點擊事件
        buttonOne.addTarget(self, action: #selector(buttonOneClicked), for: UIControlEvents.touchUpInside)
        
        return buttonOne
    }()
}