When I\'m using a UIActivityViewController, after the user chooses an activity (such as Mail or Message), I can not change the text color for the status bar nor
UIActivityViewController
You have to set the tintColor of the entire app.
self.window.tintColor = [UIColor redColor];
or
self.navigationController.navigationBar.tintColor = [UIColor whiteColor];
bar buttons
self.navigationController.navigationBar.tintColor = [UIColor redColor];