iOS-点击视图，视图背景颜色随机更改

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一、效果图

二、代码

- (void)viewDidLoad {

    [super viewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

    self.title = @"背景颜色的随机显示";

}

//点击视图，视图颜色随机更改

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{

    CGFloat red = (CGFloat)arc4random() / 0x100000000;

    CGFloat green = (CGFloat)arc4random() / 0x100000000;

    CGFloat blue = (CGFloat)arc4random() / 0x100000000;

//设置三原色

    self.view.backgroundColor = [UIColor colorWithRed:red green:green blue:blue alpha:1.0f];

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

@end

iOS-点击视图，视图背景颜色随机更改

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原文地址：http://www.cnblogs.com/zhily/p/5079614.html