Character count in MFMessageComposeViewController

Is there a way of showing the character count in the MFMessageComposeViewController? I have turned it ON in开发者_如何学C the iPhone settings for the native sms app but in my app it does not show it.

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From MFMessageComposeViewController Class Reference :

Important: The message composition interface itself is not customizable and must not be modified by your application.

It's seem that you cannot change anything to this class.

Maybe there is a way to know if the option is enabled on the iPhone and, in this case, you'll put this key in NSUserDefaults but it will be surprising.