UIButton的相关操作
import UIKit
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
self.setupButton()
}
func setupButton() {
// 创建button
/**
public enum UIButtonType : Int {
case custom // no button type 定制按钮，前面不带图标，默认文字颜色为白色，无触摸时
@available(iOS 7.0, *)
case system // standard system button 前面不带图标，默认文字颜色为蓝色，有触摸时的高亮效果
case detailDisclosure 前面带“!”图标按钮，默认文字颜色为蓝色，有触摸时的高亮效果
case infoLight 为感叹号“!”圆形按钮
case infoDark 为感叹号“!”圆形按钮
case contactAdd 前面带“+”图标按钮，默认文字颜色为蓝色，有触摸时的高亮效果
public static var roundedRect: UIButtonType { get } // Deprecated, use UIButtonTypeSystem instead
}
*/
let button: UIButton = UIButton(type: .contactAdd)
button.frame = CGRect(x: 100, y: 100, width: 100, height: 100)
button.backgroundColor = UIColor.red
// 设置背景图片
let image = UIImage(named: "back")
button.setBackgroundImage(image, for: .normal)
/**
public struct UIControlState : OptionSet {
public init(rawValue: UInt)
public static var normal: UIControlState { get } 普通状态下的文字
public static var highlighted: UIControlState { get } 触摸状态下的文字
public static var disabled: UIControlState { get } 禁用状态下的文字
public static var selected: UIControlState { get } // flag usable by app (see below)
public static var focused: UIControlState { get } // Applicable only when the screen supports focus
public static var application: UIControlState { get } // additional flags available for application use
public static var reserved: UIControlState { get } // flags reserved for internal framework use
}
*/
// 设置文字
button.setTitle("点击", for: .normal)
// 设置点击事件 (带参数)
button.addTarget(self, action: #selector(buttonClick(_:)), for: .touchUpInside)
// 设置点击事件 (不带参数)
button.addTarget(self, action: #selector(buttonotherClick), for: .touchUpInside)
// 设置图片
button.setImage(UIImage(named: "back"), for: .normal)
// 使禁用模式下按钮也不会变暗
button.adjustsImageWhenDisabled = false
// 使触摸模式下按钮也不会变暗
button.adjustsImageWhenHighlighted = false
// 设置远角
button.layer.masksToBounds = true
button.layer.cornerRadius = 50
// 设置按钮点击时高亮，默认点击时是高亮状态
button.showsTouchWhenHighlighted = true
}
func buttonClick(_ btn: UIButton) {
}
func buttonotherClick() {
}
}
