UI中霓虹灯效果代码

最新推荐文章于 2024-04-16 19:54:26 发布

原创最新推荐文章于 2024-04-16 19:54:26 发布 · 943 阅读

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#霓虹灯效果

本文介绍了一个简单的iOS应用启动动画实现方案。通过使用不同颜色的UIView并调整其位置和大小，创建了一个动态变化的视觉效果。此外，还利用定时器实现了颜色的循环渐变。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
    // Override point for customization after application launch.
    
    NSMutableArray *arr = [NSMutableArray arrayWithObjects:[UIColor redColor], [UIColor yellowColor],[UIColor blueColor],[UIColor greenColor],[UIColor grayColor],[UIColor purpleColor],[UIColor orangeColor],nil];
    for (int i = 0 ; i < 7; i++) {
        UIView *view = [[UIView alloc] initWithFrame:CGRectMake(0 + i * 20, 0 + i *20, 320 - 40 * i , 568 - i * 40)];
        view.tag = 100 + i;
        view.backgroundColor = arr[i];
        [self.window addSubview:view];
        [view release];
    }

    [NSTimer scheduledTimerWithTimeInterval:0.2 target:self selector:@selector(time) userInfo:nil  repeats:YES];
    
    
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    return YES;
}
- (void)time
{
    UIColor *temp = [self.window viewWithTag:100 ].backgroundColor;
    for (int i = 0; i <7; i++) {
        [self.window viewWithTag:100 +i ].backgroundColor =  [self.window viewWithTag:101 +i ].backgroundColor;
    }
    [self.window viewWithTag:106 ].backgroundColor = temp;
}