保存供多个UIViews使用的JSON数据时出现问题

Question

我在访问我提取的JSON数据时遇到了一些问题。我正在使用JSONModel来获取我的JSON数据，如下所示：

在我的LeftViewController.m 的顶部

@interface LeftViewController ()
{
    PostgresFeed* _feed;
}

然后在下面：

-(void)viewDidAppear:(BOOL)animated
{
JSONHTTPClient getJSONFromURLWithString:@"myurl" completion:^(NSDictionary *json,  JSONModelError *err) {
NSError *error = nil;
       _feed = [[PostgresFeed alloc] initWithDictionary:json error:&error];
       NSLog(@"Players: %@", feed.player);
       [self.tableView reloadData];
    }];
}
-(void)fetchedData:(NSData *)responseData
{
     NSError* error;
     NSDictionary* playerData = [NSJSONSerialization JSONObjectWithData:responseData options:kNilOptions error:&error];
     NSMutableDictionary* player = [playerData objectForKey:@"player"];
}
- (id)initWithCoder:(NSCoder *)aDecoder
{
    if (self = [super initWithCoder:aDecoder])
    {
        _feed.player = [NSMutableArray array];
    }
return self;
}

在我的PostgresFeed.h 中

@property (nonatomic, strong) NSString *playerName;
@property (nonatomic, strong) NSString *currentScore;
@property (nonatomic, strong) NSArray *totalPenalties;
@property (nonatomic, strong) NSString *timePlayed;

我的PostgresFeed.m 中没有任何内容

我知道，当我这样做的时候，我会把我想要的所有数据都输入到我的LeftViewController中，这就是MasterDetail的tableView。当我查看NSLog(@"Players: %@", feed.player);时，我可以看出我正在从数据库中获得我想要的所有数据。

我如何访问我知道必须填充DetailViewController的数据？我应该使用NSUserDefaults吗？我应该创建一个新的类来获取、解析和保留这些数据吗？

我对这一切都是新手，所以非常感谢教程或类似教程的说明。如果需要更多的代码或详细信息，请告诉我。

****编辑***

按照@soringod的建议应用NSNotificationCenter后，我在RightViewController中从NSLog(@"%@", notification.userinfo);获得以下输出：

    2013-07-04 12:20:26.208 PlayerTracking[25777:11303] {
    player =     (
                {
            currentScore = "4";
            totalPenalties =             (
            );
            id = 9;
            name = "Jakob Melon";
            timeStarted = "2013-06-05 19:56:10";
        },
                {
            currentScore = 16;
            totalPenalties =             (
            );
            id = 10;
            name = "John China";
            timeStarted = "2013-06-06 17:21:300";
        },
                {
            currentScore = 178;
            totalPenalties =             (
            );
            id = 11;
            name = "Jason Dog";
            timeStarted = "2013-06-07 19:26:10";
        },
                {
            currentScore = 1233;
            totalPenalties =             (
            );
            id = 12;
            name = "Fox Wolfe";
            timeStarted = "2013-06-05 19:56:10";
        },
                {
            currentScore = 234;
            totalPenalties =             (
            );
            id = 13;
            name = "Dakota Cool";
            timeStarted = "2013-06-05 19:56:10";
        },
                {
            currentScore = "34234";
            totalPenalties =             (
            );
            id = 14;
            name = "Max Face";
            timeStarted = "2013-06-05 19:00:30";
        },
                {
            currentScore = "2342";
            totalPenalties =             (
            );
            id = 15;
            name = "Jonatan Blah";
            timeStarted = "2013-06-05 18:00:30";
        },
                {
            currentScore = "234234";
            totalPenalties =             (
            );
            id = 16;
            name = "Thomas Bus";
            timeStarted = "2013-06-05 19:56:10";
        },
                {
            currentScore = 34566;
            totalPenalties =             (
            );
            id = 17;
            name = "Super Cake";
            timeStarted = "2013-06-05 17:51:30";
        },
                {
            currentScore = "23463";
            totalPenalties =             (
            );
            id = 18;
            name = "Duke Nukem";
            timeStarted = "2013-06-07 19:26:10";
        },
                {
            currentScore = "12362";
            totalPenalties =             (
            );
            id = 19;
            name = "Gordon Freeman";
            timeStarted = "2013-06-05 19:56:10";
        }
    );
}

请不要介意这些名字。

Answer 1

您可以使用[NSNotificationCenter defaultCenter]将userInfo发布到DetailController，当收到数据时，您只需将通知与提要一起发布到，并在DetailController上处理

更明确地说：

您将其添加到DetailViewController中viewDidLoad:

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(handleNotification:) name:@"myNotification" object:nil];

然后创建方法：

- (void) handleNotification:(NSNotification *) notification
{//Your information
NSLog(@"%@",notification.userInfo);
}

并且从您接收JSON的地方，您发布如下：

[[NSNotificationCenter defaultCenter] postNotificationName:@"myNotification" object:nil userInfo:yourDictionary];

如果这有帮助，请告诉我。