iOS 12.0 : Is there a way to set MFMailComposeViewController navigation bar title's text to white?
Can you please try either one of these which lets you set the navigation bar color. For example: If the navigation bar is black color, then the text is set to white.
[[UINavigationBar appearance] setBarStyle: UIBarStyleBlack]
or
[[UINavigationBar appearance] setBarTintColor:[UIColor whiteColor]