ios - 无法保存 JSON 数据以供多个 UIView 使用

Question

我在访问已拉入的 JSON 数据时遇到了一些问题。我正在使用 JSONModel 来获取 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 中什么也没有

我知道，当我这样做时，我会将我想要的所有数据获取到我的 LeftViewController 中，这是 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取我想要的所有数据。

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

我对这一切都很陌生，因此非常感谢教程或类似教程的说明。如果需要更多代码或详细信息，请告诉我。

****编辑****

按照 @soryngod 的建议应用 NSNotificationCenter 后，我从 RightViewController 中的 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 ，收到数据后，您只需使用 feed 发布通知并处理它在DetailController上。

更明确地说:

将其添加到 DetailViewController 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);
}

从哪里接收您发布的 JSON，如下所示:

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

请告诉我这是否有帮助。