-1

我使用 AFnetworking 在我的 iOS 应用程序的第一个视图中加载位置

LocationTableViewController.m

 [[LocationApiClient sharedInstance] getPath:@"locations.json" parameters:nil
                                     success:^(AFHTTPRequestOperation *operation, id response) {
                                         NSLog(@"Response: %@", response);
                                         NSMutableArray *results = [NSMutableArray array];
                                         for (id locationDictionary in response) {
                                             Location *location = [[Location alloc] initWithDictionary:locationDictionary];
                                             [results addObject:location];

                                         }
                                         self.results = results;
                                         [self.tableView reloadData];
                                     }
                                     failure:^(AFHTTPRequestOperation *operation, NSError *error) {
                                         NSLog(@"Error fetching locations!");
                                         NSLog(@"%@", error);

                                     }];

来自api的响应是

 {

        "created_at" = "2013-02-23T19:17:37Z";
        id = 1;
        lat = "51.463842";
        long = "-0.6504559999999628";
        name = Legoland;
        "street_address" = "Winkfield Road, Windsor, United Kingdom";
        "updated_at" = "2013-02-23T19:17:37Z";
    },

我显示名称和 street_address

在此处输入图像描述

当用户单击某个位置时，iOS 应用程序会转到 BeerTableViewController。我想使用类似这个请求的东西来检索点击的位置啤酒列表。

BeerTableViewController.m

NSString *path = [NSString stringWithFormat:@"locations/%@/beers.json",
    [dictionary objectForKey:@"location_id"]];


  [[LocationApiClient sharedInstance] getPath:path parameters:nil
                                        success:^(AFHTTPRequestOperation *operation, id response) {
                                            NSLog(@"Response: %@", response);
                                            NSMutableArray *results = [NSMutableArray array];
                                            for (id beerDictionary in response) {
                                                Beer *beer = [[Beer alloc] initWithDictionary:beerDictionary];
                                                [results addObject:beer];

                                            }
                                            self.results = results;
                                            [self.tableView reloadData];
                                        }
                                        failure:^(AFHTTPRequestOperation *operation, NSError *error) {
                                            NSLog(@"Error fetching beers!");
                                            NSLog(@"%@", error);

                                        }];

我不确定当用户单击它时如何从 LocationTableViewController 单元格传递 location_id 值，以便它用适当的值填充 getPath url。单击位置 1 会将 BeerTableViewController 中的 getPath url 设置为@"locations/1/beers.json

我从这个请求中得到的响应是

{
        "created_at" = "2013-02-23T19:27:10Z";
        description = Awesome;
        id = 2;
        "location_id" = 1;
        name = Pliny the Elder;
        price = "3.50";
        style = IPA;
        "updated_at" = "2013-02-23T19:27:10Z";
    }

现在我Unknown receiver 'dictionary' No known class method for selector 'objectForKey'的 BeerTableViewController.m 请求中出现错误

NSString *path = [NSString stringWithFormat:@"locations/%@/beers.json",
        [dictionary objectForKey:@"location_id"]];

我应该设置这个

LocationTableViewController.m
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
4

1 回答 1

1

怎么样：

NSString *path = [NSString stringWithFormat:@"locations/%@/beers.json",
    [dictionary objectForKey:@"location_id"]];

[[LocationApiClient sharedInstance] getPath:path //....
于 2013-02-28T18:38:29.390 回答