Ios 使用AFNetworking在collectionView中追加图像

我是Ios应用程序开发新手。我正在使用AFNetworking进行图像和数据加载，数据在采集视图中被装箱，但无法绑定图像。 这是我的集合视图和服务代码：

#import "ViewController.h"
#import "LabelCollectionViewCell.h"
@interface ViewController ()
{
    NSMutableArray *idArray;
    NSMutableArray *namelabelArray;
    UIImage *imagArray;
    NSMutableArray *dic ;
}

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [[self userCollection]setDataSource:self];
    [[self userCollection]setDelegate:self];
    [self dataJson];
    NSLog(@"array: %@", namelabelArray);  
}

-(NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
{
    return 1;
}

-(NSInteger) collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
    return [namelabelArray count];
}

-(UICollectionViewCell *) collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *cellIdentifier = @"cell";
    LabelCollectionViewCell *customCell = [collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath]; 
    [[customCell nameLabel]setText:[namelabelArray objectAtIndex:indexPath.item]];
    [[customCell idLabel]setText:[idArray objectAtIndex:indexPath.item]];
    return customCell;   
}

-(void)dataJson
{
    NSString *zipcode;
    NSString *url = [NSString stringWithFormat:@"%@",@"http://inveera.biz/lowkall_api/index.php/product_cat"];
    NSDictionary *params =[NSDictionary dictionaryWithObjectsAndKeys: zipcode,@"35005",nil];
    NSLog(@"Login URL %@", params);
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    [manager POST:url parameters:params success:^(AFHTTPRequestOperation      *operation, id responseObject) {  
        NSLog(@"Login JSON: %@", responseObject);
        NSString *data = [responseObject valueForKey:@"data"];
        idArray = [data valueForKey:@"id"];
        namelabelArray =[data valueForKey:@"name"];
        imagArray =[data valueForKey:@"img_path"];
        NSLog(@"Error image: %@", imagArray);
        [self.userCollection reloadData];
    }
          failure:^(AFHTTPRequestOperation *operation, NSError *error)
     {
         NSLog(@"Error: %@", error);
     }];
}

我的json响应是

{
    "status":"true",
    "city":[{"cityname":"Acmar"}],
    "data":[
     {"id":"1","name":"Appliances","img_path":"categories\/1\/ac1.png","status":"1"},
     {"id":"2","name":"Electronics","img_path":"categories\/2\/ac2.png","status":"1"},
     {"id":"3","name":"Furniture","img_path":"categories\/3\/ac3.png","status":"1"},
     {"id":"4","name":"Cars","img_path":"categories\/4\/ac4.png","status":"1"},
     {"id":"5","name":"Pet Supplies","img_path":"categories\/5\/ac5.png","status":"1"},
     {"id":"6","name":"Others","img_path":"categories\/6\/ac6.png","status":"1"}
    ]
}

我可以绑定名称，但无法将图像与域的完整路径绑定 名称

---

请帮帮我。提前感谢。

首先，不要使用

UIImage*imageArray

应该是

NSString*imageURLString

然后，由于您使用的是AFNetworking，因此可以更好地异步加载图像（使用
#import UIImageView+AFNetworking.h
）

首先，代替
UIImage*imageArray
应该是
NSString*imageURLString

然后，由于您使用的是AFNetworking，因此可以更好地异步加载图像（使用
#import UIImageView+AFNetworking.h
）

在AFNetworking库中，他们为UIImageView添加了一个名为UIImageView+AFNetworking的类别类，以从URL加载图像，您需要使用有效的URL请求调用下面的方法

 - (void)setImageWithURLRequest:(NSURLRequest *)urlRequest
                  placeholderImage:(UIImage *)placeholderImage
                           success:(void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, UIImage *image))success
                           failure:(void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, NSError *error))failure

-(UICollectionViewCell *) collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *cellIdentifier = @"cell";
    LabelCollectionViewCell *customCell = [collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath]; 
    [[customCell nameLabel]setText:[namelabelArray objectAtIndex:indexPath.item]];
    [[customCell idLabel]setText:[idArray objectAtIndex:indexPath.item]];  
    [[customCell imageView] setImageWithURLRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:[imagArray objectAtIndex:indexPath.row]]]
                          placeholderImage:nil
                                   success:nil
                                   failure:^(NSURLRequest * _Nonnull request, NSHTTPURLResponse * _Nullable response, NSError * _Nonnull error) {
                                   }];
    return customCell; 
}

在AFNetworking库中，他们为UIImageView添加了一个名为UIImageView+AFNetworking的类别类，以从URL加载图像，您需要使用有效的URL请求调用下面的方法

 - (void)setImageWithURLRequest:(NSURLRequest *)urlRequest
                  placeholderImage:(UIImage *)placeholderImage
                           success:(void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, UIImage *image))success
                           failure:(void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, NSError *error))failure

-(UICollectionViewCell *) collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *cellIdentifier = @"cell";
    LabelCollectionViewCell *customCell = [collectionView dequeueReusableCellWithReuseIdentifier:cellIdentifier forIndexPath:indexPath]; 
    [[customCell nameLabel]setText:[namelabelArray objectAtIndex:indexPath.item]];
    [[customCell idLabel]setText:[idArray objectAtIndex:indexPath.item]];  
    [[customCell imageView] setImageWithURLRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:[imagArray objectAtIndex:indexPath.row]]]
                          placeholderImage:nil
                                   success:nil
                                   failure:^(NSURLRequest * _Nonnull request, NSHTTPURLResponse * _Nullable response, NSError * _Nonnull error) {
                                   }];
    return customCell; 
}

对不起，Narayana，但我不能这么做。你能给我一些类似collectionView中json绑定的演示吗？或者给我一些代码。我已经正确地使用了这些代码。我没有得到我正在集合视图单元格中加载图像，但是参数获取错误。你能给我发来集合视图中正确的数据加载吗（实际上，所有参数都在不同的数组中传递，我只想使用合适的数组和带有参数的字典加载）Plazease Shere mecity=（{cityname=”“；}）；2015-12-16 12:25:11.353 LowKall应用程序[2563:49732]-[\uu NSCFString objectForKey:]：发送到实例0x7f997ad63a90 2015-12-16 12:25:11.391 LowKall应用程序[2563:49732]***由于未捕获异常“NSInvalidArgumentException”终止应用程序，原因：'-[\u NSCFString objectForKey:]：无法识别的选择器已发送到实例0x7f997ad63a90'***第一次抛出调用堆栈：@Udaikumar您可以将您的cellForItemAtIndexPath代码发送到此处吗抱歉Narayana，但我无法执行此操作。您可以在collectionView中为json绑定提供任何演示或提供代码吗？请我已正确使用此代码我不明白我正在加载Imag收集视图单元格上的e，但参数获取错误您能否在收集视图上向我发送正确的Afnetworking数据加载（实际上，所有参数都传递到不同的数组中，我只想使用正确的数组和带有参数的字典加载）Plazease Shere mecity=（{cityname=”“；}）；2015-12-16 12:25:11.353 LowKall应用程序[2563:49732]-[\uu-NSCFString objectForKey:]：发送到实例0x7f997ad63a90的未识别选择器2015-12-16 12:25:11.391 LowKall应用程序[2563:49732]***由于未捕获的异常“NSInvalidArgumentException”终止应用程序，原因：'-[\uu-NSCFString objectForKey:]：无法识别的选择器已发送到实例0x7f997ad63a90'***第一次抛出调用堆栈：@Udaikumar您能在此处发送cellForItemAtIndexPath代码吗