【iOS 开发】基础控件：UIButton

iOS 开发之基础控件 UIButton

1. UIButton 常规使用

let uiButton = UIButton(type: UIButton.ButtonType.system)
// UIButton 设置位置
uiButton.frame = CGRect(x: 10, y: 230, width: 360, height: 38)
// UIButton 设置颜色
uiButton.backgroundColor = UIColor.cyan
// UIButton 设置标题
uiButton.setTitle("UIButton title", for: .normal)
// UIButton 设置标题文字颜色
uiButton.setTitleColor(UIColor.black, for: .normal)

// UIButton 添加点击事件
uiButton.addTarget(self, action: #selector(touchUpInside), for: .touchUpInside)
// 添加 UIButton 到视图上
self.view.addSubview(uiButton)


@objc func touchUpInside() {
    
    
    print("按钮被按下，并且在控件区域内抬起")
}

效果展示：

2. UIButton 设置内容图片

let uiButton2 = UIButton(type: UIButton.ButtonType.custom)
uiButton2.frame = CGRect(x: 10, y: 280, width: 360, height: 80)
uiButton2.backgroundColor = UIColor.cyan
uiButton2.setTitle("Content Image", for: .normal)
uiButton2.setTitleColor(UIColor.black, for: .normal)
// UIButton 设置内容图片
uiButton2.setImage(UIImage(named: "demo"), for: .normal)
self.view.addSubview(uiButton2)

效果展示：

3. UIButton 设置背景图片

let uiButton3 = UIButton(type: UIButton.ButtonType.custom)
uiButton3.frame = CGRect(x: 10, y: 370, width: 360, height: 80)
uiButton3.backgroundColor = UIColor.cyan
uiButton3.setTitle("Background Image", for: .normal)
uiButton3.setTitleColor(UIColor.black, for: .normal)
// UIButton 设置背景图片
uiButton3.setBackgroundImage(UIImage(named: "demo"), for: .normal)
self.view.addSubview(uiButton3)

效果展示：

附 Github 源码：

ViewController.swift