Question

我从互联网上下载了动画篝火。我的图像序列是“* .png”，我无法使其工作。它一直循环到最后。它不显示图像。为什么我不能为这段代码制作动画？我做错了什么？

        UIImageView* campFireView = [[UIImageView alloc] initWithFrame:screenx.frame];
        int j;
        int i;

        for (j = 1, i = 0; i < 28; i =1)
        {
            NSLog( @"%i.png", i);
            campFireView.animationImages = [NSArray arrayWithObjects:
                                            [UIImage imageNamed:[NSString stringWithFormat:@"%i.png",i]], nil];
        }
        // all frames will execute in 1.75 seconds
        campFireView.animationDuration = .15;
        // repeat the annimation forever
        campFireView.animationRepeatCount = 1;
        // start animatinganimationRepeatCount:1];

        [campFireView startAnimating];

        // add the animation view to the main window 
        [self.view addSubview:campFireView]; 
        [campFireView release];

Answer 1

每次打电话：

        campFireView.animationImages = [NSArray arrayWithObjects:
                                        [UIImage imageNamed:[NSString stringWithFormat:@"%i.png",i]], nil];

您正在将animationImages设置为单项数组。您可能打算做什么：

    NSMutableArray *animationImages = [NSMutableArray array];

    for (i = 0; i < 28; i++)
    {
        [animationImages addObject:[UIImage imageNamed:[NSString stringWithFormat:@"%i.png",i]]];
    }

    campfireView.animationImages = animationImages;

另外 - 我不知道您的for循环发生了什么，但我修复了它。

Answer 2

当你循环播放然后每次为animationImages提供一个图像

NSMutableArray *arrImgs = [NSMutableArray array];

for (i = 0; i < 28; i++)
    {
        [arrImgs addObject:[UIImage imageNamed:[NSString stringWithFormat:@"%i.png",i]]];
    }

campfireView.animationImages  = [NSArray arrayWithArray:arrImgs];

动画对于循环图像不显示

2 个答案: