异步下载图像在表 [英] Async Images Download in a Table

问题描述

我有一个表视图和我想的图标图像（100x75）下载到每一行异步。到目前为止，我已经跟着很多教程，但我似乎无法弄清楚。我应该怎么办呢？

I have a table view and I'd like to download an icon image (100x75) to each row asynchronously. I've followed many tutorials so far but I can't seem to figure it out. How should I do it?

有谁建议只是在做它使用标准的API NSURLConnection的，或者我应该使用这些类/库，可在网上这样做的吗？如果是这样，你有什么建议？

Does anyone recommend just doing it using the standard NSURLConnection API or should I use one of those classes/libraries that are available online to do so? If so, what do you recommend?

当然，我需要它是快速，高效，不漏。我也不想下载影响滚动。

Of course, I need it to be fast, efficient and does not leak. I also don't want the downloading to affect the scrolling.

感谢您！

推荐答案

我建议你使用ASIHTT prequest。其简单和pretty快。结果
下面是该文档的链接 - ASIHTT prequest

I'd recommend you using ASIHTTPRequest. Its simple and pretty fast.
Here is a link to the documentation - ASIHTTPRequest

修改

您需要下载图片，只可见单元格。
下面有一个例子：

You need to download images for visible cells only. Heres a sample:

- (void)loadContentForVisibleCells
{
    NSArray *cells = [self.tableView visibleCells];
    [cells retain];
    for (int i = 0; i < [cells count]; i++) 
    { 
        ...
        // Request should be here
        ...
    }
    [cells release];
}

- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate;
{
    if (!decelerate) 
    {
        [self loadContentForVisibleCells]; 
    }
}

反正日子会把你需要code很多，使事情的工作又好又快。

Anyway u'll need to code a lot to make things work good and fast.

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