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我正在尝试使用 nsdictionary 获取这些数据。我的数据如下所示：

{
  "Id": 1,
  "Items": [
    {
      "Id": 1,
      "CorrectAnswer": "sample string 3",
      "Difficulty": 4,
      "CategoryId": 5,
      "CategoryName": "sample string 6",
      "AccountId": 7
    },
    {
      "Id": 1,
      "PicUrl": "sample string 2",
      "CorrectAnswer": "sample string 3",
      "Difficulty": 4,
      "CategoryId": 5,
      "CategoryName": "sample string 6",
      "AccountId": 7
    }
  "StartTime": "2013-10-07T00:24:22.0048045+00:00"
}

这是尝试过的：

- (IBAction)play:(id)sender {
    [self performSegueWithIdentifier:@"playSegue" sender:self];

    NSString *GameId;
    NSNumber *ID;
    NSURL *PictureURL;
    NSString *ans1;
    NSString *ans2;
    NSString *ans3;
    NSString *ans4;
    NSArray *answers = [[NSArray alloc]initWithObjects:ans1,ans2,ans3,ans4, nil];
    NSString *correctAnswer;
    NSString *difficulty;
    NSString *categoryID;
    NSString *categoryName;
    NSNumber *accountID;
    NSArray *items = [[NSArray alloc]initWithObjects:ID,PictureURL,answers,correctAnswer,categoryID,categoryName,accountID, nil];

    NSDictionary *result = [self requestWithPath:[NSString stringWithFormat:@"someurlhere"] Method:@"GET"
                                            Data:[NSDictionary dictionaryWithObjectsAndKeys:
                                                  GameId,@"GameId",
                                                  items, @"Items",
                                                  nil]
                                           Parse:YES];
    NSLog(@"the result is %@",result);


}


-(NSDictionary *)requestWithPath:(NSString *)path
                              Method:(NSString *)requestMethod
                                Data:(NSDictionary *)requestData
                               Parse:(BOOL)parse
    {
        if(path)        NSLog(@"%@", path);
        if(requestData) NSLog(@"%@", requestData);

        NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:[[NSString stringWithFormat:@"%@", path] stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]];
        [request setHTTPMethod:requestMethod.uppercaseString];
        [request setValue:@"application/json" forHTTPHeaderField:@"Accept"];

        if(requestData && [NSJSONSerialization isValidJSONObject:requestData])
        {
            NSError *error = nil;
            NSData *data = [NSJSONSerialization dataWithJSONObject:requestData options:0 error:&error];

            [request setHTTPBody:data];
            [request setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
            [request setValue:[NSString stringWithFormat:@"%d", [data length]] forHTTPHeaderField:@"Content-Length"];
        }

        NSURLResponse *response = nil;
        NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:NULL];

        if(responseData)
            NSLog(@"%@", [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]);

        if(parse && responseData)
        {
            NSError *serializationError = nil;
            return [NSJSONSerialization JSONObjectWithData:responseData options:NSJSONReadingMutableLeaves error:&serializationError];
        }
        else if (responseData)
            return @{@"string": [[NSString alloc] initWithData:responseData encoding:NSUTF8StringEncoding]};

        return nil;
    }

控制台结果

2013-10-06 19:01:16.477 FlickRest[41610:a0b] someurlhere
2013-10-06 19:01:16.478 FlickRest[41610:a0b] {
}
2013-10-06 19:01:17.186 FlickRest[41610:a0b] the result is (null)

我的问题

除了没有得到我想要的结果之外，我相信我没有以正确的方式做到这一点。有人可以指出我的错误或建议一种如何正确转换 JSON 数据的方法吗？谢谢你。

4

1 回答 1

0

只需尝试阅读此内容 并尝试使用调试。

PS。您的代码不正确。

于 2013-10-07T02:55:06.740 回答