Swift 按钮(UIButton)

一、系统按钮的创建

    /*    * DetailDisclosure: “!” 文字默认颜色为蓝色，触摸有高亮    * ContactAdd: “+” 文字默认颜色为蓝色，触摸有高亮    * InfoLight: !    * InfoDark :!    */

let button:UIButton = UIButton(type: .InfoDark)button.frame = CGRectMake(10, 150, 100, 30)button.setTitle("按钮", forState: .Normal)self.view.addSubview(button)

二、用户自定义
1、定义按钮

let btn:UIButton = UIButton(type: .Custom)btn.frame = CGRectMake(10, 200, 100, 30)self.view.addSubview(btn)

2、按钮的文字

// 按钮的文字 forState 是结构体，可以省略前面的UIControlState btn.setTitle("普通状态", forState: UIControlState.Normal) btn.setTitle("触摸状态", forState: .Highlighted) btn.setTitle("禁用状态", forState: .Disabled)

3、按钮的字体颜色

btn.setTitleColor(UIColor.blackColor(), forState: .Normal)btn.setTitleColor(UIColor.yellowColor(), forState: .Highlighted)btn.setTitleColor(UIColor.grayColor(), forState: .Disabled)

3、按钮的阴影设置

btn.setTitleShadowColor(UIColor.greenColor(), forState: .Normal)btn.setTitleShadowColor(UIColor.yellowColor(), forState: .Highlighted)btn.setTitleShadowColor(UIColor.grayColor(), forState: .Disabled)

4、按钮的背景颜色

btn.backgroundColor = UIColor.yellowColor()

5、按钮他图标

btn.setImage(UIImage(named: "icon"), forState: .Normal)btn.adjustsImageWhenHighlighted  = false  //触摸不变暗btn.adjustsImageWhenDisabled = false   // 禁用不变暗

6、按钮的背景图片

btn.setBackgroundImage(UIImage(named: "background"), forState: .Normal)

7、按钮的点击事件

 btn.addTarget(self, action: Selector("tap:"),  forControlEvents: .TouchUpInside) func tap(btn:UIButton){    print(btn.currentTitle!) }