swift笔记--Button按钮

// 创建一个深色背景的提示信息按钮

let bt1 = UIButton(type: UIButtonType.infoDark)

bt1.frame = CGRect(x: 130, y: 80, width: 40, height: 40)

// 创建一个普通的圆角按钮

let bt2 = UIButton(type: UIButtonType.roundedRect)

bt2.frame = CGRect(x: 80, y: 180, width: 150, height: 44)

bt2.backgroundColor = UIColor.purple

bt2.tintColor = UIColor.yellow

bt2.setTitle("Tap Me", for: UIControlState())

bt2.addTarget(self, action: #selector(ViewController.buttonTap(_:)), for: UIControlEvents.touchUpInside)

let bt3 = UIButton(type: UIButtonType.roundedRect)

bt3.backgroundColor = UIColor.brown

bt3.tintColor = UIColor.white

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bt3.setTitle("Tap Me", for: UIControlState())

bt3.frame = CGRect(x: 80, y: 280, width: 150, height: 44)

// 开启遮罩（不开启遮罩设置圆角无效）

bt3.layer.masksToBounds = true

// 设置圆角半径

bt3.layer.cornerRadius = 10

// 设置按钮边框宽度

bt3.layer.borderWidth = 4

// 设置按钮层边框颜色为浅灰色

bt3.layer.borderColor = UIColor.lightGray.cgColor

self.view.addSubview(bt1)

self.view.addSubview(bt2)

self.view.addSubview(bt3)

// 添加图片按钮

let bt1 = UIButton(type: UIButtonType.roundedRect)

let rect = CGRect(x: 31, y: 100, width: 257, height: 60)

bt1.frame = rect

let image = UIImage(named: "pic1")

bt1.setImage(image, for: UIControlState())

bt1.setTitle("Tap mE", for: UIControlState())

bt1.setTitleColor(UIColor.black, for: UIControlState())

bt1.titleLabel?.font = UIFont(name: "Arial", size: 24)

bt1.addTarget(self, action: #selector(ViewController.buttonTap(_:)), for: UIControlEvents.touchUpInside)

self.view.addSubview(bt1)