UIButton 有一个枚举

UIButtonType

专门用来指定button的类型

这里我们尝试一下接种类型看看效果、

        //按钮的几种类型
        
        //系统默认button
        let btn1=UIButton.buttonWithType(UIButtonType.System) as! UIButton
        btn1.frame=CGRectMake(20,50,320,36);
        btn1.setTitle("SystemButton",forState: UIControlState.Normal);
        self.view.addSubview(btn1);
        
        //所有属性需要自定义，否则字体颜色为白色
        let btn2=UIButton.buttonWithType(UIButtonType.Custom) as! UIButton
        btn2.frame=CGRectMake(20,100,36);
        btn2.setTitle("CustomButton",forState: UIControlState.Normal);
        btn2 .setTitleColor(UIColor.blackColor(),forState: UIControlState.Normal)
        self.view.addSubview(btn2);
        
        //以下为几种带图标的button
        let btn3=UIButton.buttonWithType(UIButtonType.DetailDisclosure) as! UIButton
        btn3.frame=CGRectMake(20,150,36);
        btn3.setTitle("DetailDisclosureButton",forState: UIControlState.Normal);
        self.view.addSubview(btn3);
        
        let btn4=UIButton.buttonWithType(UIButtonType.InfoLight) as! UIButton
        btn4.frame=CGRectMake(20,200,36);
        btn4.setTitle("InfoLightButton",forState: UIControlState.Normal);
        self.view.addSubview(btn4);
        
        let btn5=UIButton.buttonWithType(UIButtonType.InfoDark) as! UIButton
        btn5.frame=CGRectMake(20,250,36);
        btn5.setTitle("InfoDarkButton",forState: UIControlState.Normal);
        self.view.addSubview(btn5);
        
        let btn6=UIButton.buttonWithType(UIButtonType.ContactAdd) as! UIButton
        btn6.frame=CGRectMake(20,300,36);
        btn6.setTitle("ContactAddButton",forState: UIControlState.Normal);
        self.view.addSubview(btn6);
        

需要注意的是 按照以上几种方式创建的button将不能相互转换为其他类型了

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