在不同情况下加载数据

我有以下实现。如您所见,我试图在三种不同的情况下通过网络操作加载数据:

• viewDidLoad
• applicationEnteredForeground
• pushNotificationMessageReceived

我想知道我在三个不同的地方进行呼叫网络操作是否超出了下节课的要求。

是否有多余的东西或任何建议或建议?

- (void)viewDidLoad {
    [super viewDidLoad];
    [self loadData];    

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

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(applicationIsActive:)
                                                 name:UIApplicationDidBecomeActiveNotification
                                               object:nil];

    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(applicationEnteredForeground:)
                                                 name:UIApplicationWillEnterForegroundNotification
                                               object:nil];
}

- (void)applicationEnteredForeground:(NSNotification *)notification {
    NSLog(@"Application Entered Foreground");
    [self loadData];
}

- (void)applicationIsActive:(NSNotification *)notification {
    NSLog(@"Application Did Become Active");
}

// AppDelegate notification center calls
-(void)pushNotificationMessageReceived: (NSNotification *)notification{

    [self loadData];
}