MFMessageComposeViewController stops sms messaging

Question

I'm using MFMessageComposeViewController in my iOS app.

MFMessageComposeViewController *controller = [[[MFMessageComposeViewController alloc] init];
if([MFMessageComposeViewController canSendText]){
    controller.body = text;
    controller.recipients = [NSArray arrayWithObjects:recipient,nil];
    controller.messageComposeDelegate = self.navigationController;
    [self.navigationController presentViewController:controller animated:YES];
}

-(void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result {
[self dismissModalViewControllerAnimated:YES];
}

Button "send message" is blue. If you send message not to the iMessage user, iPhone send sms not iMessage, but on some devices(iPhone 4, 5) operation fails. After that error you can't send messages to the user at all !!! using standard sms application in iPhone.

Deletion of contact, reboot, switching off iMessage doesn't solve this problem. MFMessageComposeViewController kills sms sending and we can't solve this issue. We have iOS 6.1.3 version on out test devices.

Answer 1

try

controller.messageComposeDelegate = self;