THE SWIFT CODE之设置UIBUTTON的不同方式创建,以及不同的状态和外观

import UIKit

class ViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        //创建有状态的按钮
        var btn:UIButton = UIButton(frame: CGRect(x: 50,y: 50,width: 100,height: 25))
        
        btn.setTitle("点击按钮",forState: UIControlState.Highlighted)
        btn.setTitle("未点击",forState: UIControlState.normal)
        btn.backgroundColor = UIColor.blackColor()
        self.view.addSubview(btn)
        //给按钮添加点击事件
        btn.addTarget(self,action: "clickEvent:",forControlEvents: UIControlEvents.TouchUpInside)
        
        //创建没有状态的按钮
        var btn2:UIButton = UIButton(frame: CGRect(x: 50,y: 85,height: 35))
        btn2.setTitle("normal",forState: UIControlState.normal)
        btn2.backgroundColor = UIColor.blueColor()
        self.view.addSubview(btn2)
        
        //创建一个图片加文字的按钮
        var btn3:UIButton = UIButton(frame: CGRect(x: 50,y: 130,width: 180,height: 35))
        btn3.setimage(UIImage(named: "btn1"),forState: UIControlState.normal)
        btn3.titleLabel?.font = UIFont.boldSystemFontOfSize(30)
        btn3.imageView?.contentMode = UIViewContentMode.ScaleAspectFit
        //btn3.imageEdgeInsets = UIEdgeInsets(top: 0,left: 0,bottom: 0,right: 0)
        btn3.setTitle("图片按钮",forState: UIControlState.normal)
        self.view.addSubview(btn3)
        
        //从系统定义的按钮类型创建Button
        var btn4:UIButton = UIButton.buttonWithType(UIButtonType.ContactAdd) as! UIButton
        //btn4.backgroundColor = UIColor.brownColor()
        btn4.frame.offset(dx: 60,dy: 200)
        self.view.addSubview(btn4)
        
        //创建禁止按钮
        var btn5:UIButton = UIButton(frame: CGRect(x: 50,y: 240,height: 35))
        btn5.setTitle("点击按钮",forState: UIControlState.Highlighted)
        btn5.setTitle("禁止按钮",forState: UIControlState.normal)
        btn5.enabled = false //设置按钮不能点击
        btn5.setTitleColor(UIColor.redColor(),forState: UIControlState.disabled)//代表已经禁止
        btn5.backgroundColor = UIColor.purpleColor()
        self.view.addSubview(btn5)
        
        //创建一个圆角按钮
        var btn6:UIButton = UIButton(frame: CGRect(x: 50,y: 280,height: 35))
        btn6.backgroundColor = UIColor.whiteColor()
        btn6.setTitleColor(UIColor.blackColor(),forState: UIControlState.normal)
        btn6.setTitle("圆角按钮",forState: UIControlState.normal)
        btn6.layer.cornerRadius = 5
        self.view.addSubview(btn6)
        
        //部分圆角按钮,在通过CAShaperLayer和UIBezierPath来画
        var btn7:UIButton = UIButton(frame: CGRect(x: 50,y: 330,height: 35))
        btn7.backgroundColor = UIColor.whiteColor()
        btn7.setTitleColor(UIColor.blackColor(),forState: UIControlState.normal)
        btn7.setTitle("部分圆角按钮",forState: UIControlState.normal)
        
        let shape:CAShapeLayer = CAShapeLayer()
        let bepath:UIBezierPath = UIBezierPath(roundedRect: btn6.bounds,byRoundingCorners: UIRectCorner.TopRight|UIRectCorner.TopLeft,cornerRadii: CGSize(width: 15,height: 15))
        
        UIColor.blackColor().setstroke()
        shape.path = bepath.CGPath
        
        btn7.layer.mask = shape
        self.view.addSubview(btn7)
        
        //创建折角按钮
        var btn8:UIButton = UIButton(frame: CGRect(x: 50,y: 380,height: 35))
        btn8.backgroundColor = UIColor.whiteColor()
        
        btn8.setTitleColor(UIColor.blackColor(),forState: UIControlState.normal)
        btn8.setTitle("折角按钮",forState: UIControlState.normal)
        
        let shape8:CAShapeLayer = CAShapeLayer()
        let bepath8:UIBezierPath = UIBezierPath()
        bepath8.movetoPoint(CGPoint(x: 0,y: 0))
        bepath8.addLinetoPoint(CGPoint(x: 80,y: 0))
        
        bepath8.addLinetoPoint(CGPoint(x: 100,y: 15))
        bepath8.addLinetoPoint(CGPoint(x: 100,y: 35))
        bepath8.addLinetoPoint(CGPoint(x: 0,y: 35))
        bepath8.closePath()
        
        shape8.path = bepath8.CGPath
        
        btn8.layer.mask = shape8
        self.view.addSubview(btn8)
        
        //创建border按钮
        var btn9:UIButton = UIButton(frame: CGRect(x: 50,y: 420,height: 35))
        btn9.backgroundColor = UIColor.whiteColor()
        btn9.setTitle("边框按钮",forState: UIControlState.normal)
        btn9.setTitleColor(UIColor.blackColor(),forState: UIControlState.normal)
        btn9.layer.borderColor = UIColor.blackColor().CGColor
        btn9.layer.borderWidth = 1
        btn9.layer.cornerRadius = 5
        self.view.addSubview(btn9)
        
        //
        
    }
    
    
    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // dispose of any resources that can be recreated.
    }
    
    func clickEvent(sender:AnyObject){
        NSLog("按钮点击了事件")
    }
    
    
    
    
}