swift中UIButton的简单使用

概述UIButton是我们经常用的一个控件，它是继承自UIControl的，下面就总结一下相关属性及用法： 1.UIButton的创建 a.不带样式的： let btn: UIButton = UIButton() b.带样式的： let btns:UIButton =UIButton(type: UIButtonType)； 其中UIButtonType是一个枚举如下所示： publicenum U

UIbutton是我们经常用的一个控件，它是继承自UIControl的，下面就总结一下相关属性及用法：

1.UIbutton的创建

a.不带样式的：

let btn: UIbutton = UIbutton()

b.带样式的：

let btns:UIbutton =UIbutton(type: UIbuttonType)；

其中UIbuttonType是一个枚举如下所示：

publicenum UIbuttonType :Int {    case Custom // no button type 自定义样式按钮    @available(iOS 7.0,*)    case System // standard system button	//系统的样式按钮    case Detaildisclosure    case Infolight    case InfoDark   case ContactAdd//联系人按钮    public staticvar RoundedRect: UIbuttonType { get }// Deprecated,use UIbuttonTypeSystem instead}

用法如下：

let btn: UIbutton = UIbutton(type: .Custom)

2.UIbutton设置字内容和颜色

btn.setTitle("按钮",forState: .normal)

btn.setTitlecolor(UIcolor.whitecolor(),forState: .normal)

3.UIbutton设置背景颜色和背景图片

btn.backgroundcolor =UIcolor.blackcolor()

btn.setBackgroundImage(UIImage(named:"1"),forState: .normal)

4.UIbutton设置字体大小

btn.TitleLabel?.Font =UIFont.systemFontOfSize(20)

5.禁用UIbutton

btn.enabled =false //禁止按钮，默认为true

6.设置圆角

btn.layer.cornerRadius = 8

7.设置背景图片为圆角（因为我们直接设置UIbutton圆角时，图片不会变为圆角）

buttonImage.setimage(UIImage(named:"1"),forState: UIControlState.normal)

//设置背景图片为圆角

buttonImage.imageVIEw?.layer.cornerRadius = 50

8.在UIbutton上添加图片和文字，有时需要我们调整，此时需要：

方向为逆时针方向，上、左、下、右依次去设置的

btn.imageEdgeInsets =UIEdgeInsetsMake(top: CGfloat,left: CGfloat,bottom: CGfloat,right: CGfloat)

btn.TitleEdgeInsets =UIEdgeInsetsMake(top: CGfloat,right: CGfloat)

例子如下：

        //创建一个图片一个文字的按钮        let btn2: UIbutton = UIbutton(type: .Custom)        btn2.frame = CGRectMake(50,100,120,35)        btn2.setimage(UIImage(named: "1"),forState: .normal)        btn2.backgroundcolor = UIcolor.blackcolor()        btn2.TitleLabel?.Font = UIFont.systemFontOfSize(20)        btn2.imageVIEw?.contentMode = UIVIEwContentMode.ScaleAspectFit        btn2.setTitle("图片按钮",forState: .normal)        //偏移量，分别为上下左右        btn2.imageEdgeInsets = UIEdgeInsetsMake(0,-50,0)        btn2.TitleEdgeInsets = UIEdgeInsetsMake(0,-80,5)        btn2.setTitlecolor(UIcolor.whitecolor(),forState: .normal)        btn2.adjustsImageWhenHighlighted = false        self.vIEw.addSubvIEw(btn2)

9 .添加按钮的点击事件

第一种是不带参数的，第二种是带参数的

btn.addTarget(self,action:"click",forControlEvents: .touchUpInsIDe)

btn.addTarget(self,action:"clicks：",forControlEvents: .touchUpInsIDe)

第一种：

func click(){}

第二种：

func clicks(sender:UIbutton){}

写的代码如下：

func initbuttonVIEw() {        //创建有状态的按钮        let btn: UIbutton = UIbutton(type: .Custom)        btn.frame = CGRectMake(50,20,30)        btn.setTitle("点击按钮",forState: .Selected)        btn.setTitle("未点击",forState: .normal)        btn.backgroundcolor = UIcolor.blackcolor()        btn.addTarget(self,action: "clickBtn:",forControlEvents: .touchUpInsIDe)        self.vIEw .addSubvIEw(btn)                //创建无状态的按钮        let btn1: UIbutton = UIbutton()        btn1.frame = CGRectMake(50,60,30)        btn1.setTitle("normal",forState: .normal)        btn1.backgroundcolor = UIcolor.bluecolor()        self.vIEw.addSubvIEw(btn1)                //创建一个图片一个文字的按钮        let btn2: UIbutton = UIbutton(type: .Custom)        btn2.frame = CGRectMake(50,forState: .normal)        btn2.adjustsImageWhenHighlighted = false        self.vIEw.addSubvIEw(btn2)                //创建禁止按钮        let btn3: UIbutton = UIbutton(type: .Custom)        btn3.frame = CGRectMake(50,140,35)        btn3.setTitle("点击按钮",forState: .Highlighted)        btn3.setTitle("禁止按钮",forState: .normal)        btn3.enabled = false    //禁止按钮，默认为true        btn3.setTitlecolor(UIcolor.redcolor(),forState: .Disabled)        btn3.backgroundcolor = UIcolor.purplecolor()        self.vIEw.addSubvIEw(btn3)                //创建圆角按钮        let btn4: UIbutton = UIbutton(type: .Custom)        btn4.frame = CGRectMake(50,180,35)        btn4.backgroundcolor = UIcolor.blackcolor()        btn4.setTitle("圆角按钮 ",forState: .normal)        btn4.setTitlecolor(UIcolor.whitecolor(),forState: .normal)        btn4.layer.cornerRadius = 8        self.vIEw.addSubvIEw(btn4)                //部分圆角按钮，主要利用layer的mask属性，在tongguoCAShaperLayer和UIBezIErPath来画        let btn5: UIbutton = UIbutton(type: .Custom)        btn5.frame = CGRectMake(50,220,35)        btn5.backgroundcolor = UIcolor.blackcolor()        btn5.setTitle("部分圆角按钮",forState: .normal)        btn5.setTitlecolor(UIcolor.whitecolor(),forState: .normal)        let shape: CAShapeLayer = CAShapeLayer()        let bepath: UIBezIErPath = UIBezIErPath(roundedRect: btn5.bounds,byRoundingCorners: [UIRectCorner.topRight,UIRectCorner.topleft,UIRectCorner.Bottomleft],cornerRadii: CGSize(wIDth: 8,height: 8))        UIcolor.blackcolor().setstroke()        shape.path = bepath.CGPath        btn5.layer.mask = shape        self.vIEw.addSubvIEw(btn5)                //创建带边框的按钮        let btn6: UIbutton = UIbutton(type: .Custom)        btn6.frame = CGRectMake(50,260,35)        btn6.setTitle("边框按钮",forState: .normal)        btn6.setTitlecolor(UIcolor.blackcolor(),forState: .normal)        btn6.layer.bordercolor = UIcolor.blackcolor().CGcolor        btn6.layer.borderWIDth = 1        btn6.layer.cornerRadius = 8        self.vIEw.addSubvIEw(btn6)                //显示提示信息的UILabel        labelText = UILabel()        labelText.frame = CGRectMake(50,300,44)        labelText.textcolor = UIcolor.orangecolor()        self.vIEw.addSubvIEw(labelText)                let btns: UIbutton = UIbutton(type: .Custom)        btns.frame = CGRectMake(<#T##x: CGfloat##CGfloat#>,<#T##y: CGfloat##CGfloat#>,<#T##wIDth: CGfloat##CGfloat#>,<#T##height: CGfloat##CGfloat#>)        btn.setTitle("按钮",forState: .normal)        btn.setTitlecolor(UIcolor.whitecolor(),forState: .normal)        btn.backgroundcolor = UIcolor.blackcolor()        btn.setBackgroundImage(UIImage(named: "1"),forState: .normal)        btn.imageEdgeInsets = UIEdgeInsetsMake(<#T##top: CGfloat##CGfloat#>,<#T##left: CGfloat##CGfloat#>,<#T##bottom: CGfloat##CGfloat#>,<#T##right: CGfloat##CGfloat#>)        btn.TitleEdgeInsets = UIEdgeInsetsMake(<#T##top: CGfloat##CGfloat#>,<#T##right: CGfloat##CGfloat#>)                btn.addTarget(self,action: "click",forControlEvents: .touchUpInsIDe)    }        func clickBtn(sender: UIbutton){                sender.selected = !sender.selected        labelText.text = "点击了按钮"    }

效果图如下：

总结

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