ios - 如何在TableView单元格中显示URL图像而不会卡住？

Question

我已经在URLImage单元格中显示了tableview的集合。在滚动单元格时卡住了。我曾经使用过SDWebImageManager和AFNetWorking这样的第三方。牢房卡住的机会永远不会少。

[imageVw setImageWithURL:[NSURL URLWithString:self.imgaeRecord.PreviewURl]placeholderImage:[UIImage imageNamed:@"default-thumbnail.jpg"]];

或

NSURL *url =[NSURL URLWithString:[self.MoviesListImage objectAtIndex:indexPath.row]];

SDWebImageManager *manager = [SDWebImageManager sharedManager];
[manager downloadImageWithURL:url
                      options:0
                     progress:^(NSInteger receivedSize, NSInteger expectedSize) {
                        // progression tracking code
                     }
                    completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished, NSURL *imageURL) {
                    if (image) {
                        cell.recipeImageView.image = image;
                    }
                }];

Answer 1

在您的cellForRowAtIndexPath中

NSURL *url =[NSURL URLWithString:[self.MoviesListImage objectAtIndex:indexPath.row]];

SDWebImageManager *manager = [SDWebImageManager sharedManager];
[manager downloadImageWithURL:url
                  options:0
                 progress:^(NSInteger receivedSize, NSInteger  expectedSize) {
                    // progression tracking code
           }
                completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished, NSURL *imageURL) {
                if (image) {
                   dispatch_async(dispatch_get_main_queue(), ^{
                   TableViewCellClass *updateCell = (id)[tableView cellForRowAtIndexPath:indexPath];
                   if (updateCell)
                     updateCell.yourImageView.image = image;
               });
           }
       }
}];
[task resume];