ios - 收藏 View 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在 Collection View 中显示它，因为我给定了背景颜色红色，我得到纯红色单元格，但我有一个 ImageView 和一个标签，这两个 View 都没有显示!!

我从服务器 self.iname 获取图像名称。iname 是一个数组，我在其中存储了图像名称!这个 url 的工作原理是因为我在前 View Controller 中将其用于个人资料图片。所以我的代码为什么我没有获得 ImageView ???提前感谢您的建议!!是的，我已经给出了我的数据源和代表，并给出了我所有的 socket 连接。 我正在使用 Storyboard!!

这是我的收藏 View block -

- (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collectionviewcell 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，并且第一行代码删除了标签 lbl 和 imageView dimg，因此它们不会显示。