將Json值傳遞給UICollection查看

我想在網格視圖中顯示我的圖像。我已經使用UICollection視圖控制器，這是我傳遞的JSON格式的數據，我不能夠使用JSON格式顯示圖像。任何人都可以找到我的錯誤？這裏是我的代碼將Json值傳遞給UICollection查看

@interface ReceipeCollectionViewController() 
{ 
    NSMutableData *webdata; 
    NSURLConnection *connection; 
    NSMutableArray *contentarray; 
    NSMutableArray *array; 
} 

@end 

@implementation ReceipeCollectionViewController 

(void)viewDidLoad 
{ 
    [super viewDidLoad]; 
    [array removeAllObjects]; 
    [[self collectionView]setDelegate:self]; 
    [[self collectionView]setDataSource:self]; 
    array = [[NSMutableArray alloc] init];  
} 

(void)viewDidAppear:(BOOL)animated 
{ 
    NSString *[email protected]"http://wesotech.com/web/myrecipe/web_services/recipe_listing.php?"; 
    NSURL *url=[NSURL URLWithString:serverurl]; 
    NSURLRequest *request = [NSURLRequest requestWithURL:url]; 
    connection = [NSURLConnection connectionWithRequest:request delegate:self]; 
    if(connection) 
    { 
     webdata=[[NSMutableData alloc]init]; 
    } 
    else 
    { 
     NSLog(@"Connection failure"); 
    } 
} 

(void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data 
{ 
    [webdata appendData:data]; 
} 

(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error 
{ 
    NSLog(@"Fail with error"); 
} 

(void)connectionDidFinishLoading:(NSURLConnection *)connection 
{ 
    NSError *error; 
    NSArray *results=[NSJSONSerialization JSONObjectWithData:webdata options:0 error:&error]; 
    [array removeAllObjects]; 
    [array addObjectsFromArray:results]; 
    [[self collectionView]reloadData]; 
} 

(void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response 
{ 
    [webdata setLength:0]; 
} 

(void)didReceiveMemoryWarning 
{ 
    [super didReceiveMemoryWarning]; 
} 

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

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

(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath 
{ 
    [self.mySpinner stopAnimating]; 

    static NSString *identifier = @"Cell"; 

    UICollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:identifier forIndexPath:indexPath]; 

    UIImageView *recipeImageView = (UIImageView *)[cell.contentView viewWithTag:100]; 

    recipeImageView.image=[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:[[array objectAtIndex:indexPath.row] valueForKey:@"image"]]]]; 

    UITextField *recipeTitleView =(UITextField *)[cell.contentView viewWithTag:101]; 

    recipeTitleView.text=[[array objectAtIndex:indexPath.row]valueForKey:@"recname"]; 

    return cell; 
} 

@end

我的JSON格式是，

[ 

    {"image":"http:\/\/wesotech.com\/web\/myrecipe\/recipeimages\/2016080614704658059030.jpg","recname":"Italian Chicken","recid":"1"}, 
    {"image":"http:\/\/wesotech.com\/web\/myrecipe\/recipeimages\/2016080614704653421637.jpg","recname":"Fast Food Friday","recid":"2"}, 
    {"image":"http:\/\/wesotech.com\/web\/myrecipe\/recipeimages\/2016080614704648912893.jpg","recname":"Honey Clazed Lamb Chops","recid":"3"} 

]

來源

2016-08-23 SakthiDeviPriya N

您添加的痕跡或斷點，如果你得到了正確的URL來檢查，如果圖像正確加載中...？另外，你的代碼並不能完全顯示'UIImageView'來自何處/如何。你是否也檢查過它的限制？它可能有正確的圖像，但只有0尺寸或類似的東西。使用視圖調試器將提供更多信息。 – jcaron

而是與\逸出您的網址，用百分比編碼在JSON和使用下面的代碼

NSString *imageUrl = @"http%3A%2F%2Fwesotech.com%2Fweb%2Fmyrecipe%2Frecipeimages%2F2016080614704658059030.jpg"; 
NSString *url = [imageUrl stringByRemovingPercentEncoding];

另外重要的一點是解碼迴轉義字符串：因爲你是加載圖像與http://，你應該在的info.plist文件中設置Allow Arbitrary Loads到YES。

另外，請記住，不允許設置允許任意加載，因爲這會導致安全問題。這將是更好，如果你可以把所有的網絡電話使用https://

來源

2016-08-23 13:45:12

只要知道[蘋果將於2016年底前需要iOS應用的HTTPS連接]（https://techcrunch.com/2016/06/14/apple-will-require-https-connections-for-ios-apps- by-the-end-of-2016 /） – Sudo

非常感謝你的工作 –

使類tableViewCell和公用事業領域分配一個類名的CollectionView的細胞。在tableViewCell Class中創建imageView的出口，並在cellForItemAtIndexPath委託方法中訪問它。然後指定圖像與此代碼：

[cell. recipeImageView sd_setImageWithURL:[NSURL URLWithString:[[array objectAtIndex:indexPath.row] valueForKey:@"image"]]];

這一定會幫助你。

來源

2016-08-23 13:24:06

將Json值傳遞給UICollection查看

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