Question

这就是我目前所拥有的：

NSMutableArray *images = [[NSMutableArray alloc] initWithCapacity:21];

 for(int count = 1; count <= 21; count++)
{
    NSString *fileName = [NSString stringWithFormat:@"dance2_%03d.jpg", count];
    UIImage  *frame    = [UIImage imageNamed:fileName];
    [images addObject:frame];
}

UIImage imageNamed导致我一些内存问题，我想切换到imageWithContentsOfFile。

我可以使用单个图像，但不是整个数组：

NSMutableArray *images = [[NSMutableArray alloc] initWithCapacity:21];

for(int count = 1; count <= 21; count++)
{
    NSString *fileName = [[[NSBundle mainBundle] bundlePath] stringByAppendingString:@"/dance2_001.jpg"];
    UIImage  *frame    = [UIImage imageWithContentsOfFile:fileName];
    [images addObject:frame];
}

非常感谢任何帮助！谢谢！

Answer 1

for(int i = 1; i <= 21; i++)
    {
        [images addObject:[UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:[NSString stringWithFormat:@"dance2_%03d", i] ofType:@"jpg"]]];
    }

Answer 2

首先应该做的是创建一个包含动画图像的数组，如下所示：

NSMutableArray* images = [[NSMutableArray alloc] initWithObjects:
                             [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"image1" ofType:@"jpg"]],
                             [UIImage imageWithContentsOfFile:[[NSBundle mainBundle] pathForResource:@"image2" ofType:@"jpg"]],
                             nil];

然后你可以将它添加到UIImageView来为它设置动画：

UIImageView* animationImagesView = [[UIImageView alloc] initWithFrame:CGRectMake(posX, posY, frameWidth, frameHeight)]; 
animationImagesView.animationImages = images; //array of images to be animate
animationImagesView.animationDuration = 1.0; //duration of animation
animationImagesView.animationRepeatCount = 1; //number of time to repeat animation
[self.view addSubview:animationImagesView];

现在您可以使用以下两个调用来启动和停止动画：

[animationImagesView startAnimating]; //starts animation 
[animationImagesView stopAnimating]; //stops animation

希望这会有所帮助。还记得在完成后释放你的Array和UIImageView。

如何将imageWithContentsOfFile用于动画中使用的图像数组？

2 个答案: