Can't link a bar button to an @IBAction in superclass
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I have a number of view controllers, each with their own menu button (a
UIBarButton, added in the storyboard). Now I want to link all these up to a single
@IBAction function in their superclass (the superclass is the same for all the view controllers with that menubutton).
Now I have linked up
@IBOutlets to a superclass before, but it doesn't seem to work with
@IBActions, even though the function isn't private, and it definitely is part of the superclass (I am refactoring, previously it was an
@IBAction in each class, which only did
menuButtonTap() (calling the method in the superclass).
I have solved the problem by manually creating an
@IBAction on the superclass, and giving them the same name as the ones I create in the subclasses. Then I deleted the ones in the subclasses. This leaves a 'dangling reference' from the storyboard, according to Xcode, but I know it's there.
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Although this still does not work as of XCode 9.4 for general purpose
UIViewController (but your workaround still does work 👍🏻), please note that it works as expected for
UITableViewCell templates in storyboard.
If some of your template cells in storyboard share the same base class containing
@IBOutlet properties, you will be able to link them to every template cell instance as you usually do:
Then XCode will show a popup for telling in which prototype cell the link is "backed":
I'm not sure why this second step is necessary though, since you designate a specific component from within a given prototype cell
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You can do it like you do when adding an action to a UITabbar button from subview class.
Assuming btn is a UIBarButtonItem,
[btn setTarget:self.superview]; [btn setAction:@selector(menuButtonTap:)]
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Are you using __unused keyword by any chance? If you do the IBAction won't show up in storyboard(I am using Xcode 6.3.2)
- (IBAction)actionBack:(__unused id)sender; vs - (IBAction)actionBack:(id)sender;
To make it show up and selectable removed the __unsused keyword.
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CAN (modal verb) definition and synonyms, language note: Can is a modal verb. It is used with the base form of a verb. The form cannot is used in negative statements. The usual spoken form of cannot is A Controller Area Network (CAN bus) is a robust vehicle bus standard designed to allow microcontrollers and devices to communicate with each other's applications without a host computer. It is a message-based protocol, designed originally for multiplex electrical wiring within automobiles to save on copper, but can also be used in many other
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- This is a solution, but I have the items in storyboard, and not in my classes. In my solution, I only add one
@IBActionto the superclass.
- Nope, not using
__unused. I did find a workaround though. Check my answer.
- ok. I see. well that's what happened to me, so I wanted to share if it will help anyone.