Question

伙计我需要知道如何在游戏加载后显示下降7秒的图像？

这是我目前的代码：

在.h档案

上

IBOutlet UIImageView *CloudDrop;
NSTimer *timer;

-(void)CloudDropCode;

在.m档案

上

-(void)CloudDropCode{
    // Drop Cloud Images Animation
    CloudDrop.animationImages = [NSArray arrayWithObjects:
                            [UIImage imageNamed:@"CloudDrop2.png"],
                            [UIImage imageNamed:@"CloudDrop.png"],
                            [UIImage imageNamed:@"CloudDrop2.png"],
                            [UIImage imageNamed:@"CloudDrop.png"],
                            [UIImage imageNamed:@"CloudDrop2.png"],
                            [UIImage imageNamed:@"CloudDrop.png"],
                            [UIImage imageNamed:@"CloudDrop2.png"],
                            [UIImage imageNamed:@"CloudDrop.png"],nil];

    [CloudDrop setAnimationRepeatCount:1];
    CloudDrop.animationDuration = 0.1;
    [CloudDrop startAnimating];

    // Drop Cloud Ramdom Position
    CloudDrop.center = CGPointMake(CloudDrop.center.x, CloudDrop.center.y +2);
    if (CloudDrop.center.y > 590){
        ramdomPosition = arc4random() %266;
        ramdomPosition = ramdomPosition +54;

        CloudDrop.center = CGPointMake(ramdomPosition, -40);
        dropCloudUsed = NO;

    // Time to Drop Cloud Down Again
        [[NSRunLoop currentRunLoop]runUntilDate:[NSDate dateWithTimeIntervalSinceNow:7.0]];

        CloudDrop.hidden = NO;
    }
}

这是viewDidLoad：

- (void)viewDidLoad
    timer = [NSTimer scheduledTimerWithTimeInterval:0.03 target:self selector:@selector(CloudDropCode)userInfo:nil repeats:YES];

现在，当游戏加载时，图像会下降。我试图在游戏加载10秒后跌落图像。任何想法或建议？感谢

Answer 1

定义变量：

CloudDrop.animationImages = [NSArray arrayWithObjects:
                        [UIImage imageNamed:@"CloudDrop2.png"],
                        [UIImage imageNamed:@"CloudDrop.png"],nil];

NSUInteger currentIndex = 0;

重复下一个方法7次

[UIView animateWithDuration:1.0 delay:0.0 options:UIViewAnimationOptionCurveEaseIn animations:^{
    //Update there. get next image by index and realize animation
} completion:^(BOOL finished) {
    if (currentIndex == 0) 
        currentIndex++;
    else 
        currentIndex = 0;
}];

实现备用函数调用以自行完成。

延迟的下降图像

1 个答案: