内存管理
我需要大家澄清一下，那就是我正在实现一个iPad应用程序。我尝试下载图像并制作动画。图像数量应该超过100,000。我用来下载并添加到视图的代码如下。
UIImageView* imageView=[[UIImageView alloc]initWithFrame:CGRectMake(0, 0,100,100)];
NSData *receivedData=nil;
receivedData = [NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://path/prudently/iphone/image_s/e545afbf-4e3e-442e-92f9-a7891fc3ea9f/test.png"]];
imageView.image = [[UIImage alloc] initWithData:receivedData] ;
[subView addSubview:imageView];
[imageView release];
但是在我成功地将 8000 多个图像添加到我的子视图后，我遇到了异常。我从 url 获取数据时遇到异常。还有一件事我不会发布子视图，因为一旦我下载了它们，我需要为子视图设置动画。
请给我您的建议
谢谢， 塞卡尔·贝塔拉姆。
I need a clarification from all of you,That is I am implementing an iPad application. In that I tried to download and animate the images. The image count should be more than 100,000.The code I used to download and adding to the view is as follows.
UIImageView* imageView=[[UIImageView alloc]initWithFrame:CGRectMake(0, 0,100,100)];
NSData *receivedData=nil;
receivedData = [NSData dataWithContentsOfURL:[NSURL URLWithString:@"http://path/prudently/iphone/image_s/e545afbf-4e3e-442e-92f9-a7891fc3ea9f/test.png"]];
imageView.image = [[UIImage alloc] initWithData:receivedData] ;
[subView addSubview:imageView];
[imageView release];
But I am getting exception after I successfully added more than 8000 image to my subview. I am getting exception at getting data from the url. And one more thing I am not releasing the subview because once I downloaded them I need to animate the subview.
Please give me your suggessions
Thank you,
Sekhar Bethalam.
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对于桌面应用程序来说，100,000 张图像似乎很多，更不用说像 iPhone 这样的智能手机了。是否没有其他方法可以解决这个问题，并且不需要如此高的资源数量？
100,000 images would seem a lot for desktop applications, let alone a smart phone like an iPhone. Is there not another approach you can take to solve this problem that wouldn't need such a high resource count?
您可以将 URL、图像或其他内容写入缓存文件，然后划分一些页面以对图像进行动画处理...
当用户按下页面链接时，应用程序读取该页面的图像并为其设置动画，用户不使用的页面图像不需要显示。
You can write the URL , images or something to a cached file, and divide some pages to animate the images...
When the user press a page link , application read and animate the images of this page, images of the page which user don't use need not display.
实现此目的的唯一方法是根据屏幕上的需要动态创建和销毁 UIImageView。由于设备上的可用内存有限，iPhone/iPad/iAnything 无法执行您想要的操作。
The only way you are going to accomplish this is to dynamically create and destroy the UIImageViews as they are needed on the screen. The iPhone/iPad/iAnything are incapable of doing what you want because of the limited memory available on the device.