在tableview中延迟加载图像 [英] Lazy loading of image in tableview

问题描述

我试图以懒惰模式加载我的uitableviewcells的图像。

Im trying to load the image of my uitableviewcells in lazy mode.

我试图以最简单的方式做到这一点，我看到了很多例子但他们的目的远远超出了我的目的。

I'm trying to do it in the simplest possible way, I saw a lot of examples but they were going further than my purpose.

这就是我目前正在做的事情，它不起作用：

This is what Im doing currently, and its not working:

// Configure the cell...
    Info *info = [self.Array objectAtIndex:indexPath.row];
    cell.textLabel.text = info.name;
    cell.detailTextLabel.text = info.platform;
    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;


    //The image is downloaded in asynchronous 

    NSBlockOperation *downloadingImgBlock = [NSBlockOperation blockOperationWithBlock:^{
        NSString* imageURL = info.imgURL;
        NSData* imageData = [[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:imageURL]];
        cell.imageView.image = [UIImage imageWithData:imageData];
    }];
[self.queue addOperation:downloadingImgBlock];

为什么它不起作用？它是如何工作的？

Why it's not working? And how could it work?

推荐答案

我终于设法用以下方式设置图像：

I finally managed to do it setting the image with:

– performSelectorOnMainThread:withObject:waitUntilDone:

下载图像后

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