逐帧动画

Question

我想知道这个动画代码的替代品..

    -(void)movetree{
    //[tree1 release];
    treeMove = YES;
    tree1.animationImages = [NSArray arrayWithObjects: 
        [UIImage imageNamed:@"moving trees1.png"],
        [UIImage imageNamed:@"moving trees2.png"],
        [UIImage imageNamed:@"moving trees3.png"],
        [UIImage imageNamed:@"moving trees4.png"],
        [UIImage imageNamed:@"moving trees5.png"],
        [UIImage imageNamed:@"moving trees6.png"],
        [UIImage imageNamed:@"moving trees7.png"],
        [UIImage imageNamed:@"moving trees8.png"],
        [UIImage imageNamed:@"moving trees9.png"],
        [UIImage imageNamed:@"moving trees10.png"],
        [UIImage imageNamed:@"moving trees11.png"],
        [UIImage imageNamed:@"moving trees12.png"],
        [UIImage imageNamed:@"moving trees13.png"],
        [UIImage imageNamed:@"moving trees14.png"],
        [UIImage imageNamed:@"moving trees15.png"],
        [UIImage imageNamed:@"moving trees16.png"],
        [UIImage imageNamed:@"moving trees17.png"],
        [UIImage imageNamed:@"moving trees18.png"],
        [UIImage imageNamed:@"moving trees19.png"],
        [UIImage imageNamed:@"moving trees20.png"],
        [UIImage imageNamed:@"moving trees21.png"],
        [UIImage imageNamed:@"moving trees22.png"],
        [UIImage imageNamed:@"moving trees23.png"],
        [UIImage imageNamed:@"moving trees24.png"],
        [UIImage imageNamed:@"moving trees25.png"],
        [UIImage imageNamed:@"moving trees26.png"],
        [UIImage imageNamed:@"moving trees27.png"],
        [UIImage imageNamed:@"moving trees28.png"],
        [UIImage imageNamed:@"moving trees29.png"],
        [UIImage imageNamed:@"moving trees30.png"],
        [UIImage imageNamed:@"moving trees31.png"],
        [UIImage imageNamed:@"moving trees32.png"],
        [UIImage imageNamed:@"moving trees33.png"],
        [UIImage imageNamed:@"moving trees34.png"],
        [UIImage imageNamed:@"moving trees35.png"],
        [UIImage imageNamed:@"moving trees36.png"],
        [UIImage imageNamed:@"moving trees37.png"],
        [UIImage imageNamed:@"moving trees38.png"],
        [UIImage imageNamed:@"moving trees39.png"],
        [UIImage imageNamed:@"moving trees40.png"],
        [UIImage imageNamed:@"moving trees41.png"],
        [UIImage imageNamed:@"moving trees42.png"],
        [UIImage imageNamed:@"moving trees43.png"],
        [UIImage imageNamed:@"moving trees44.png"],
        [UIImage imageNamed:@"moving trees45.png"],
        [UIImage imageNamed:@"moving trees46.png"],
        [UIImage imageNamed:@"moving trees47.png"],
        [UIImage imageNamed:@"moving trees48.png"],
        [UIImage imageNamed:@"moving trees49.png"],
        [UIImage imageNamed:@"moving trees50.png"],
        [UIImage imageNamed:@"moving trees51.png"],
        [UIImage imageNamed:@"moving trees52.png"],
        [UIImage imageNamed:@"moving trees53.png"],
        [UIImage imageNamed:@"moving trees54.png"],
        [UIImage imageNamed:@"moving trees55.png"],
        [UIImage imageNamed:@"moving trees56.png"],
        [UIImage imageNamed:@"moving trees57.png"],
        [UIImage imageNamed:@"moving trees58.png"],
        [UIImage imageNamed:@"moving trees59.png"],
        [UIImage imageNamed:@"moving trees60.png"],nil];

 // all frames will execute in 1.75 seconds
 tree1.animationDuration =1.75;
 // repeat the annimation forever
 tree1.animationRepeatCount = 0;
 // start animating

 [tree1 startAnimating];
 // add the animation view to the main window 
 //[bgview addSubview:campFireView];

 [tree1 release]; 

 player.numberOfLoops = -1;
 [player play];


 }

还有其他方法可以使用帧显示动画吗？这种方法似乎更重，而且崩溃很多..

Answer 1

尝试使用PNG Animation method by Moses DeJong。用他的话来说：

这个例子实现了一个动画 简单的面向视图控制器 等待读取 PNG 图像数据 框架，直到需要。代替 分配许多兆字节，这个类 在大约半兆内存中运行 大约 5-10% 的 CPU 利用率 第二代 iPhone。

我相信它基本上是使用 UIImageView 来缓存 AVAudioPlayer。

Answer 2

有一个动画回调，类似于动画完成，[self performSelector:@selector(stopAnimation) withObject:nil afterDelay:3]; 无法记住 - 但通常的方法是，一旦动画完成，这个方法被调用然后你可以释放。通常的 EXC_BAD_ACCESS 可能是您的一个或多个图像不存在，请仔细检查所有图像名称并验证它们是否存在于您的资源文件夹中。但是，据我所知，这是唯一的动画图像。 帮助链接http://iosdevelopertips.com/graphics/animated-gif-animated-images-iphone-style.html