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Questions tagged [ibaction]

IBAction is a type qualifier used by Interface Builder to synchronize with Xcode.It is available in iOS 2.0 and later. The tags [UIButton] should be used to ask about Apple's UIKit frameworks UIButton action. Use the related tags [ios] , [UIButton] and [IBAction] for issues specific to those platforms.

IBAction is a macro defined to denote methods that can be referred to in Interface Builder.

As indicated in Apple's documentation, it is defined as void:

#define IBAction void

Relevant Stack Overflow question: IBOutlet and IBAction

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Is @IBAction just a syntax in Swift or does @Something mean a particular thing in Swift?

Is @IBAction just a syntactical difference in Swift or does it signify something specific. Also, similar usage is seen in AppDelegate.swift where @UIApplicationMain is written.
Anuj
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$T4 does not have a member named Generator ERROR swift

@IBAction func button(sender : AnyObject) { var videoConnection : AVCaptureConnection! videoConnection = nil var connection : AVCaptureConnection var port : AVCaptureInputPort var stillImageOutput : AVCaptureStillImageOutput? …
Jim
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Why IBAction called before viewdidload?

I have a IBAction method which is called when a button touched. But when the UIViewController is called, that IBAction method is called first before viewdidload. I checked my code, there is nowhere that I call IBAction method specificly. What is…
user3309441
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iPhone: IBAction Causes "Unrecognized Selector Sent to Instance" Error

I'm working on my first real iPhone app, a simple To-Do list application to help me organize stuff, except I'm getting an "unrecognized selector sent to instance 0x". Specifically: 2010-02-20 14:30:09.200 ToDoApp[88562:20b] *** -[NSCFDictionary…
Althane
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IBAction methods declared in a Protocol are not visible in Interface Builder

I have defined an objective-c protocol that declares a method that is tagged with IBAction. I implemented a UIViewController that implements the protocol. In Interface Builder I created a nib file with the UIViewController as the file's owner.…
Marc
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Wierd behaviour for UIButton setHighlighted after the button is set selected

My question is simple: I am creating a UIButton with resources for normal, disabled, selected and highlighted, in other words, all the controls I have access to. The problem is that, if for some reason I choose to set the button to be selected, and…
Durican Radu
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Should I put IBActions in the header file or not?

Given that iOS SDK 6.1 is used in Xcode 4.6.3 , does it make a difference to declare the method signature of IBAction in a header file or not? Without putting the method declaration in the header file, the app is still able to compile and run…
Raptor
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Animate UIButton Down - Xcode

I wanted to know how I would go about animating a UIButton down when clicked via -(IBAction) Thanks in advance!
Mina Dawoud
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What order do two IBActions fire when called from the same component?

I have a UIButton and I am trying to call 2 different actions from one UIButton event, since that button needs to do two things, but I need to do them in a certain order. No matter how I try, I can't seem to change the order in which the Actions…
Dummy Code
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self IBAction and sender

I am a newbie iOS programmer, here is my question: I have mapview and segmented control, also changeMapType function which get called when UIControlEventValueChanged occures, like this // change map type with segmented control -…
smoke
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iPhone: IBAction Causes “Unrecognized Selector Sent to Instance” Error

I am developing an iphone application where you log in a server and after you get validation my app moves you to another viewcontroller where you can use a button to send your gps location. For some reason when I press a button in my next…
Dimitris Koumouras
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How do you "abort" a method in Objective C?

I know there are ways around this, but I would like to know if the following question is possible. Can you "abort" a method in Objective-C? In this case it is on Cocoa Touch. I have an IBAction. In that action I have in if/else if/else statement. If…
Josiah
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How to create buttons which are activated when the user slides their finger over them on iPhone

I'm writing an iPhone application which has a piano like interface. The user is presented with a number of large buttons with no spaces between them. At the moment I've created IBActions in Interface Builder by right mouse dragging the buttons into…
James Andrews
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Variable out of IBAction

I have problem that im trying to get solve for like week. My goal is to get variable out of my IBAction, to use for example in -(void)viewDidLoad.. But as far as I am now I can use my variable only in my IBAction.. - (IBAction) changeLat:(NSNumber…
Edgars
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IB Connections in Xcode crashing

I was working on my iOS app last night when I went to test it and it crashed on startup. I wasn't even working on the nib that is causing the crash. Anyways, here is the error code: 2/29/12 10:32:05.291 AM Safe Flight: *** Terminating app due to…
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