Retrieve content from PubNub messages

Question

I can successfully send and receive messages with PubNub, the problem comes when i try to display content from a message and load it a `UITableViewCell`'s `UITextView`. The `Second TEST LOG` writes out the whole message, that i send from my iPhone (i've already tried it with the Dev Console), but after this the app crashes. ``` [__NSCFDictionary length]: unrecognized selector sent to instance ``` I know there is something wrong with a dictionary, but i can't figure it out. I'm using only one `NSDictionary` for the message i send via PubNub and it "arrives" to the console, therefore I think it works properly. As you can see in the code i've tried some variations, but without any success. UPDATE It's working if i send NSString instead of NSDictionary. ``` @interface ViewController () @property (nonatomic, strong) NSString *myIncomeMessage; @property (nonatomic, strong) NSString *messageFromDict; @property (nonatomic, strong) NSArray *twoChannels; @property (nonatomic, strong) NSDictiona…

Accepted Answer

@sabin, here is an example, using an observer -- you could do a similar thing via a delegate:

```
[[PNObservationCenter defaultCenter] addMessageReceiveObserver:self
                                                     withBlock:^(PNMessage *message) {

id messageData = message.message;
     if ([messageData isKindOfClass:[NSDictionary class]]) {

NSString *messageString = [NSString stringWithFormat:@"foo: %@, and bar: <%@>",
             [(NSDictionary *)messageData valueForKey:@"foo"],
             [(NSDictionary *)messageData valueForKey:@"bar"]];
     }
 }];
```

If you then published this from the Web Console (pubnub.com/console):

```
{"foo":"hey", "bar":"you!"}
```

You would be able to render a string from the above code (via messageString) that looked like this:

```
foo: hey, and bar: you!
```

Let me know if that helped!

Retrieve content from PubNub messages

Solution

Problem