Question

I’ve got an app that uses a UINavigationBarController and I push to all ViewControllers, but in one ViewController I want the user to pick a value in a PickerView, if they don’t pick anything then when they click on the Next button (Which is a push segue to next viewcontroller) I want them to get an alert (which is already fixed), but also to cancel the segue so it doesn’t move to the next viewcontroller.

Thanks in advance,
Mike

Answer 1

My approach would be to change the uibutton action programmatically. If a date has not been picked, the buton triggers an alert. When the user selects a date, change the action of the “next” button to perform a segue with identifier.