3 Add new messages handling callback

To handle messages from the previous subscribe steps, add a message handling callback.

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AppDelegate.m

#import "AppDelegate.h"
#import <PubNub/PubNub.h>
#import <PubNubBridge/PubNub+FAB.h>


@interface AppDelegate () <PNObjectEventListener>

@property (nonatomic, strong) PubNub *client;

@end


@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    self.client = [PubNub client];
    [self.client addListener:self];
    [self.client subscribeToChannels:@[@"announcements", @"lobby"] withPresence:NO];
    return YES;
}

- (void)client:(PubNub *)client didReceiveStatus:(PNSubscribeStatus *)status {
    if (status.category == PNUnexpectedDisconnectCategory) {
    }
    else if (status.category == PNConnectedCategory) {
    }
    else if (status.category == PNReconnectedCategory) {
    }
    else if (status.category == PNDisconnectedCategory) {
    }
    else if (status.category == PNDecryptionErrorCategory) {
    }
}

- (void)client:(PubNub *)client didReceiveMessage:(PNMessageResult *)message {
    // Handle new message stored in message.data.message
    if (message.data.actualChannel != nil) {
        // Message has been received on channel group stored in
        // message.data.subscribedChannel
    }
    else {
        // Message has been received on channel stored in
        // message.data.subscribedChannel
    }
    NSLog(@"Received message: %@ on channel %@ at %@", message.data.message,
          (message.data.actualChannel?: message.data.subscribedChannel), message.data.timetoken);
}

@end