swift实现随机背景色
<p>本文实例为大家分享了swift实现随机背景色的具体代码，供大家参考，具体内容如下</p><div class="jb51code"><pre class="brush:cpp;">//
// 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()
}
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
}
}</pre></div>
<p>效果：</p>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202201/2022126102033741.jpg?2022026102047" /></p>
<p style="text-align:center"><img alt="" src="https://img.jbzj.com/file_images/article/202201/2022126102115432.jpg?2022026102127" /></p>
<p>以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持琼殿技术社区。</p>
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