- [__ NSDictionaryI名]：在目標C無法識別選擇

Question

- [__ NSDictionaryI名]：「 - [__ NSDictionaryI名]：發送到實例0x7fae38527a80 終止應用程序由於未捕獲的異常 'NSInvalidArgumentException'，原因無法識別選擇無法識別的選擇發送到！例如0x7fae38527a80' [在這裏輸入的形象描述] [1]

imageid = @"ImageID"; 
     name = @"Name"; 
     path = @"Path"; 
     // And add a few recipes to it 
     recipes = [NSMutableArray arrayWithCapacity:10]; 
     Recipe* recipe = [[Recipe alloc] init]; 


    //  recipe.name = @"Image 1"; 
    //  recipe,path = @"http://absolutesoft.net/test/ios/col/img/img1.png"; 
    //  recipe.image = [UIImage imageNamed:@"Image 2"]; 
    //  [recipes addObject:recipe]; 



      NSData *jsonData = [NSData dataWithContentsOfURL: 
           [NSURL URLWithString:@"http://absolutesoft.net/test/ios/col/getImages.php"]]; 

      id jsonObjects = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:nil]; 

      // values in foreach loop 
      for (NSDictionary *dataDict in jsonObjects) { 


       recipe.image = [dataDict objectForKey:@"ImageID"];; 
       recipe.name = [dataDict objectForKey:@"Name"]; 
       recipe.Path = [dataDict objectForKey:@"Path"]; 
       NSLog(@"recipe.image %@",recipe.image); 
       NSLog(@"recipe.name %@",recipe.image); 
       NSLog(@"recipe.Path %@",recipe.Path); 

       dict = [NSDictionary dictionaryWithObjectsAndKeys: 
         recipe.image, imageid, 
         recipe.name, name, 
         recipe.Path, path, 
         nil]; 
       [recipes addObject:dict]; 
      } 
      //NSLog(@"Dict = %@",dict); 
     NSLog(@"recipes = %@",recipes); 

Answer 1

你讓你的來電來訪的假設：

 id jsonObjects = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:nil]; 

沒有失敗。不要將nil傳遞給錯誤參數。傳遞一個真正的NSError並檢查值。