集合视图图像未显示，但 URL 工作正常

Question

我正在尝试从服务器获取图像并将其显示在集合视图中，因为我给出了背景色红色，我得到了纯红色单元格bt我有一个图像视图和一个标签，这两个都没有显示！！

我正在从服务器 self.iname 获取图像名称，这是一个我在其中存储图像名称的数组！！这个 url 的东西工作，因为我在之前的视图中将其用于个人资料图片 controller.so 我的代码中出了什么问题，为什么我没有得到图像视图???提前感谢您的建议！！是的，我已经提供了我的数据源和委托，并给出了我所有的出口连接。我正在使用故事板！！

这是我的收藏视图块-

- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{

[collectionView registerClass:[ColCell class] forCellWithReuseIdentifier:@"cell"];
ColCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"cell" forIndexPath:indexPath];
[[[cell contentView] subviews] makeObjectsPerformSelector:@selector(removeFromSuperview)];
UIView * contents=[[UIView alloc]      initWithFrame:cell.contentView.bounds];
[contents setBackgroundColor:[UIColor clearColor]];
[cell.contentView addSubview:contents];
if([self.iname count]!=0){
[cell setTag:indexPath.row];    // set tag to the indexPath.row so we can access it later
// add interactivity
UITapGestureRecognizer * tap=[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onButtonTapped:)];
[tap setNumberOfTapsRequired:1];
[cell addGestureRecognizer:tap];
NSString *fileName = [NSString stringWithFormat:@"%@",self.iname]; //objectAtIndex:indexPath];
NSLog(@"%@",fileName);
NSString *baseurl=[NSString stringWithFormat:@"http://test.kre8tives.com/barebon/upload/"];
NSDictionary *dict = self.iname[indexPath.row];
NSLog(@"%@", [self.iname objectAtIndex: indexPath.row]);
NSString *paths = [NSString stringWithFormat:@"%@%@", baseurl, dict];
NSLog(@"@@@@%@",paths);
[NSURLConnection sendAsynchronousRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:paths]] queue:[NSOperationQueue mainQueue] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
    NSLog(@"%@",response);
    cell.dimg.image=[[UIImage alloc] initWithData:data];
   // UIImage *imgage = [[UIImage alloc] initWithData:data];
   // cell.dimg.image=imgage;
    cell.lbl.text=[self.iname objectAtIndex:indexPath.row];
    NSLog(@"%@",[self.iname objectAtIndex:indexPath.row]);
}];
}
    //cell.dimg.image=[[UIImage alloc]initWithData:data];
     if (cell.selected) {
       cell.backgroundColor = [UIColor blueColor]; // highlight selection
     }
     else
     {
         cell.backgroundColor = [UIColor redColor]; // Default color
     }
    return cell;
}

这是我的 CollectionViewCell 文件 (colcell.h(

#import <UIKit/UIKit.h>
@interface ColCell : UICollectionViewCell
@property (strong, nonatomic) IBOutlet UIImageView *dimg;
@property (strong, nonatomic) IBOutlet UILabel *lbl;
@end

这是我的收藏视图单元格文件 .m (colcell.m(

 #import "ColCell.h"
 @implementation ColCell
-(void)awakeFromNib {
    UITapGestureRecognizer * tap=[[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(onButtonTapped:)];
    [tap setNumberOfTapsRequired:1];
    [self addGestureRecognizer:tap];
    [super awakeFromNib];
}
-(void)onButtonTapped:(id)sender
{
 //the response to the gesture.
//mind that this is done in the cell. If you don't want things to happen from this cell.
//then you can still activate this the way you did in your question.
}
@end

这是我的回应之一

2017-06-14 09:03:03.647 MenuBar[754:23050] <NSHTTPURLResponse: 0x60000023c5c0> { URL:   http://test.kre8tives.com/barebon/upload/impotedbeernew.png } { status code: 200, headers {
"Accept-Ranges" = bytes;
"Cache-Control" = "max-age=2592000";
"Content-Length" = 8261;
"Content-Type" = "image/png";
Date = "Tue, 13 Jun 2017 12:04:47 GMT";
Etag = ""31e1206-2045-551704d9ee800"";
Expires = "Thu, 13 Jul 2017 12:04:47 GMT";
"Last-Modified" = "Thu, 08 Jun 2017 10:27:44 GMT";
Server = "Apache Phusion_Passenger/4.0.10 mod_bwlimited/1.4 mod_fcgid/2.3.9";
Vary = "User-Agent";
} }
2017-06-14 09:03:03.647 MenuBar[754:23050] impotedbeernew.png
2017-06-14 09:03:03.648 MenuBar[754:23050] <NSHTTPURLResponse:   0x60000023e360> { URL:     http://test.kre8tives.com/barebon/upload/blendedwhiskyne.png } { status code: 200, headers {
    "Accept-Ranges" = bytes;
    "Cache-Control" = "max-age=2592000";
    "Content-Length" = 17188;
    "Content-Type" = "image/png";
    Date = "Tue, 13 Jun 2017 12:04:47 GMT";
    Etag = ""31e118d-4324-5517150204640"";
    Expires = "Thu, 13 Jul 2017 12:04:47 GMT";
    "Last-Modified" = "Thu, 08 Jun 2017 11:40:01 GMT";
    Server = "Apache Phusion_Passenger/4.0.10 mod_bwlimited/1.4 mod_fcgid/2.3.9";
    Vary = "User-Agent";
 } }

Answer 1

最后，删除这些代码将适用于@Akshay。

[[[cell contentView] subviews] makeObjectsPerformSelector:@selector(removeFromSuperview)];
UIView * contents=[[UIView alloc] initWithFrame:cell.contentView.bounds];
[contents setBackgroundColor:[UIColor clearColor]];
[cell.contentView addSubview:contents];

因为它们是未使用的代码，并且第一个代码行删除了标签lbl和 imageView dimg，所以它们不会显示。