解析 JSON 从 AFNetworking 获取到显示在 UITableView

Question

我最近使用 AFNetworking 来获取 JSON 并解析它，我已经将它导入我的项目并获得了 JSON 但我不知道怎么可能解析 JSON 以便显示，尤其是在 Objective-c 中。

这是我 viewDidLoad 中用于获取 JSON 的代码：

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager GET:@"http://api.androidhive.info/json/movies.json" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"JSON: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

检索到 JSON 用于解析：

  {
        genre =         (
            Action,
            Drama,
            "Sci-Fi"
        );
        image = "http://api.androidhive.info/json/movies/1.jpg";
        rating = "8.300000000000001";
        releaseYear = 2014;
        title = "Dawn of the Planet of the Apes";
    },
        {
        genre =         (
            Action,
            "Sci-Fi",
            Thriller
        );
        image = "http://api.androidhive.info/json/movies/4.jpg";
        rating = "8.4";
        releaseYear = 2014;
        title = "X-Men: Days of Future Past";
    },
        {
        genre =         (
            Action,
            Adventure,
            Fantasy
        );
        image = "http://api.androidhive.info/json/movies/7.jpg";
        rating = "7.3";
        releaseYear = 2014;
        title = "The Amazing Spider-Man 2";
    },
        {
        genre =         (
            Animation,
            Comedy,
            Family
        );
        image = "http://api.androidhive.info/json/movies/9.jpg";
        rating = "8.300000000000001";
        releaseYear = 2013;
        title = Rush;
    },
        {
        genre =         (
            Animation,
            Adventure,
            Family
        );
        image = "http://api.androidhive.info/json/movies/15.jpg";

        rating = "8.199999999999999";
        releaseYear = 2010;
        title = "How to Train Your Dragon";
    }
)

更新：

如何显示它并存储检索到的数据以便更容易在 UITableView 中显示它。我试着这样做：

NSLog(@"JSON: %@", [responseObject objectForKey:@"image"]);

只获取整个图像但它崩溃了。例如，我只需要获取所有标题并将它们存储在数组中，然后显示它们 UITableView.

Answer 1

你试试这个方法从NSDictionary

获取数据

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
[manager GET:@"http://api.androidhive.info/json/movies.json" parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {
    NSLog(@"JSON: %@", responseObject);
    self.arrData=[[NSMutableArray alloc]initWithArray:responseObject];
    [self.tableView reloadData];// reload table data
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    NSLog(@"Error: %@", error);
}];

TableView 委托方法

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
       // your cell code here
      // indexPath.row(use in tableView) means your number of index to get value
    NSLog(@"JSON: %@", [[self.arrData objectAtIndex:indexPath.row] objectForKey:@"image"]);
    NSLog(@"title: %@", [[self.arrData objectAtIndex:indexPath.row] objectForKey:@"title"]);
    NSLog(@"rating: %@", [[self.arrData objectAtIndex:indexPath.row] objectForKey:@"rating"]);
   NSLog(@"releaseYear: %@", [[self.arrData objectAtIndex:indexPath.row] objectForKey:@"releaseYear"]);
   NSLog(@"genre: %@", [[self.arrData objectAtIndex:indexPath.row] objectForKey:@"genre"]);// return array get value particular using array index 
}

Answer 2

AFNetworking returns 已经在 responseObject 中处理了 JSON - 在您的情况下，它是其中包含 NSDictionary 对象的 NSArray。

要访问单个 NSDictionary，请创建一个 NSArray 属性（例如 resultArray）并将其设置为 responseObject，然后您可以通过 resultArray[1]（使一定要退回支票）。

然后您可以通过键（myDictionary[@"title] 等）访问 dictionary 的值。

解析 JSON 从 AFNetworking 获取到显示在 UITableView

Parse JSON get from AFNetworking to display in UITableView

objective-c

ios

afnetworking-2