PlacesViewController.m

#import "HFAppDelegate+FBAuthentication.h"

- (void)viewDidLoad {
    [super viewDidLoad];
    
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(sessionStateChanged:)
                                                 name:HFSessionStateChangedNotification
                                               object:nil];
}

- (void)viewDidUnload {
    [super viewDidUnload];
    
    [[NSNotificationCenter defaultCenter] removeObserver:self name:HFSessionStateChangedNotification object:nil];
}

#pragma mark - Helper Methods

- (void)sessionStateChanged:(NSNotification*)notification {
    // A more complex app might check the state to see what the appropriate course of
    // action is, but our needs are simple, so just make sure our idea of the session is
    // up to date and repopulate the user's name and picture (which will fail if the session
    // has become invalid).
}

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