swift 随机背景色的实现

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//

//  ViewController.swift

//  网络获取图片

//

//  Created by 悦兑科技 on 15/1/27.

//  Copyright (c) 2015年 BSY. All rights reserved.

//

import UIKit

class ViewController: UIViewController {

    override func viewDidLoad() {

        super.viewDidLoad()

        [self .addButton()]

    }

   override func viewWillAppear(animated: Bool) {

        super.viewWillAppear(animated)

    self.view.backgroundColor = UIColor.whiteColor()

    }

    func addButton()

    {

        // 创建button

        var button:UIButton =  UIButton.buttonWithType(UIButtonType.Custom) as UIButton

        var frame = CGRectMake(100, 100, 100, 100)

        button.frame = frame

        // 设置字体

        button.setTitle("随即色", forState: UIControlState.Normal)

        button.setTitleColor(UIColor.blackColor(), forState: UIControlState.Normal)

        button.titleLabel?.font = UIFont(name: "Heiti SC", size: 20)

        // 设置圆形

        self.view.addSubview(button)

        button.layer.borderColor = UIColor.lightGrayColor().CGColor

        button.layer.borderWidth = 2

        button.layer.cornerRadius = 50

        button.layer.backgroundColor = UIColor.whiteColor().CGColor

        [button .addTarget(self, action: "buttonClick", forControlEvents: UIControlEvents.TouchUpInside)]

    }

    /**

    button方法实现

    */

    func buttonClick()

    {

        /**

        *  创建颜色

        */

        var color = UIColor(red: 183/255.0, green: 183/255.0, blue: 183/255.0, alpha: 1.0)

        var color1 = UIColor.blueColor()

        var color2 = UIColor.brownColor()

        var color3 = UIColor.yellowColor()

        var color4 = UIColor.orangeColor()

        var color5 = UIColor.blackColor()

        /**

        *  创建可变数组并把颜色添加到数组

        */

        var arrM :NSMutableArray = NSMutableArray()

        arrM.addObject(color)

        arrM.addObject(color1)

        arrM.addObject(color2)

        arrM.addObject(color3)

        arrM.addObject(color4)

        arrM.addObject(color5)

        /**

        *  把颜色赋值给父控件的view

        */

        self.view.backgroundColor = arrM.objectAtIndex(Int(arc4random_uniform(UInt32(arrM.count)))) as? UIColor

    }

}

swift 随机背景色的实现

标签：swift教程   swift教学视频   swift 照相代码   swift计算机   swift   

原文地址：http://blog.csdn.net/mjbaishiyun/article/details/43193433