-[__NSDictionaryI name]：目标 c 中无法识别的选择器

Question

-[__NSDictionaryI name]：无法识别的选择器发送到实例 0x7fae38527a80 由于未捕获的异常“NSInvalidArgumentException”而终止应用程序，原因：“-[__NSDictionaryI name]：无法识别的选择器发送到实例 0x7fae38527a80” ![在此处输入图片说明][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

你假设你的电话在这里：

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

没有失败。不要将 nil 传递给错误参数。传递一个真正的 NSError 并检查值。