Question

我有一个UITableView，我在每个自定义UITableViewCell中放置一个UIScrollView。就像aribnb一样。我有一些UIImage来显示来自互联网的一些图像，一切正常。但是当我下载图像并希望在tableViewCell中再次显示它们时，我使用以下代码，我发现显示新图像和右图像以更改旧图像并重复使用图像，差不多2或3秒。

这是我的tableviewcell委托

static NSString *ReusedIdentifier = @"mainDailyTableViewCell";
ILDailyTableViewCell *cell = (ILDailyTableViewCell *)[tableView dequeueReusableCellWithIdentifier:ReusedIdentifier];
if (cell == nil)
{
    cell = [[ILDailyTableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
                                       reuseIdentifier:ReusedIdentifier
                                              viewType:VIEWTYPE_DETAIL];
    [cell.itemScrollView setItemDelegate:self];
}
if (indexPath.row < [_contentList count])
{
    ILDailyItemInfo *preRowDailayItem = [_contentList objectAtIndex:indexPath.row];
    NSMutableArray *cellItemList = [[NSMutableArray alloc] init];
    for (id item in preRowDailayItem.dealList)
        [cellItemList addObject:item];
    if ([cellItemList count] == 0)
        cellItemList = nil;
    [cell setCellItems:cellItemList];
}
else
    [cell setCellItems:nil];
return cell;

这是我的前项目视图集图像方法

- （void）showOutMainImageInfo：（ILDailyItemInfo *）itemInfo {

UIImage *showImage = itemInfo.image;

__block ILDailyItemView *weakSelf = self;
    if (showImage == nil)
    {
        [[SDWebImageManager sharedManager] downloadImageWithURL:[NSURL URLWithString:imageUrl] options:SDWebImageRetryFailed progress:nil completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished, NSURL *imageURL) {
            itemInfo.image = image;
            [_dailyItemImageView showWithMain:[ILResizeImage resizeImage:image withRect:CGRectMake(0, 0, weakSelf.itemMainImageView.frame.size.width, weakSelf.itemMainImageView.frame.size.height)]
                                  bottomImage:[[ILResizeImage resizeImage:image withRect:CGRectMake(0, 0, weakSelf.bottomImageView.frame.size.width, weakSelf.bottomImageView.frame.size.height)] applyExtraLightEffect]];
        }];
    }
    else
    {
        [_dailyItemImageView showWithMain:[ILResizeImage resizeImage:showImage withRect:CGRectMake(0, 0, weakSelf.itemMainImageView.frame.size.width, weakSelf.itemMainImageView.frame.size.height)]
                              bottomImage:[[ILResizeImage resizeImage:showImage withRect:CGRectMake(0, 0, weakSelf.bottomImageView.frame.size.width, weakSelf.bottomImageView.frame.size.height)] applyExtraLightEffect]];
    }

}

，这是我的每日项目图片视图绘制方法

- （无效）的drawRect：（的CGRect）RECT {

if (_mainImage)
{
    [_mainImage drawInRect:_mainImageFrame];
}
if (_bottomImage)
{
    [_bottomImage drawInRect:_bottomImageFrame];
}

}

UItableView中的UIImage setImage滞后

0 个答案: