converting websocket to XML and Binary

I am writing an app, that is connecting to EchoServer with web socket, and i am sending there a difference information pack(NSDictionary with(BOOL,String) in different format (JSON,XML,Binary).

there is an action when i am sending this pack

- (IBAction)sendSocket:(id)sender
{
    NSString *enteredText = [[NSString alloc] initWithString:enterTextField.text];
    BOOL switchSelected = switchControl.on;

    NSDictionary *dictionaryToSend = [[NSDictionary alloc] initWithObjectsAndKeys:enteredText, @"text", [NSNumber numberWithBool:switchSelected], @"switch", nil];

    NSMutableData *dataObject = [[NSMutableData alloc] init];

    if (segmentControl.selectedSegmentIndex == 0)
    {
        dataObject = [[NSJSONSerialization dataWithJSONObject:dictionaryToSend options:NSJSONWritingPrettyPrinted error:nil] mutableCopy];

    }
    else if (segmentControl.selectedSegmentIndex == 1)
    {
        NSError *error;
        dataObject = [[NSPropertyListSerialization dataWithPropertyList:dictionaryToSend format:NSPropertyListXMLFormat_v1_0 options:0 error:&error]mutableCopy];
        NSLog(@"%@",dataObject);

    }
    else if (segmentControl.selectedSegmentIndex == 1)
    {
        NSError *error;
        dataObject = [[NSPropertyListSerialization dataWithPropertyList:dictionaryToSend format:NSPropertyListBinaryFormat_v1_0 options:0 error:&error]mutableCopy];

    }



    if (self.delegate != nil && [self.delegate respondsToSelector:@selector(sendClickedWithData:)])
    {
        [self.delegate sendClickedWithData:dataObject];
    }
}

delegate method

- (void)sendClickedWithData:(NSData *)data
{
    [_webSocket send:data];
}

all functions with web socket are right. but after I am sent, I receive the same data pack, and I need to decode this in main ViewController(action is done in ViewController2)

It is easy with JSON

- (void)webSocket:(SRWebSocket *)webSocket didReceiveMessage:(id)message
{
    NSMutableDictionary *decodedData = [[NSMutableDictionary alloc] init];

    decodedData = [NSJSONSerialization JSONObjectWithData:message
                                                         options:kNilOptions
                                                           error:nil];

but I stuck to do the same to XML and Binary! Can you help me improve this method for this 2 types?