EDIT Note that in iOS 9 this technique will become unnecessary, because a UIStackView will perform distribution automatically. I’ll add another answer explaining how that works. How to Perform Even Distribution Using Autolayout The simplest way to do this in Interface Builder alone (rather than constructing constraints in code) is to use “spacer” views: Position … Read more
The storyboard ID is a String field that you can use to create a new ViewController based on that storyboard ViewController. An example use would be from any ViewController: //Maybe make a button that when clicked calls this method – (IBAction)buttonPressed:(id)sender { MyCustomViewController *vc = [self.storyboard instantiateViewControllerWithIdentifier:@”MyViewController”]; [self presentViewController:vc animated:YES completion:nil]; } This will create … Read more
Despite the “Unknown class MyClass in Interface Builder file.” error printed at runtime, this issue has nothing to do with Interface Builder, but rather with the linker, which is not linking a class because no code uses it directly. When the .nib data (compiled from the .xib) is loaded at runtime, MyClass is referenced using … Read more
There is also an easier way to access the view instead of dealing with the nib as an array. 1) Create a custom View subclass with any outlets that you want to have access to later. –MyView 2) in the UIViewController that you want to load and handle the nib, create an IBOutlet property that … Read more
Updated Nowadays, Apple realized the problem we solved many years ago (lol_face) and provides Content Layout Guide and Frame Layout Guide as part of the UIScrollView. Therefore you need to go through the following steps: Same as above; For this contentView, set top, bottom, left, and right margins to 0 pinning them to the Content … Read more
IBAction and IBOutlet are macros defined to denote variables and methods that can be referred to in Interface Builder. IBAction resolves to void and IBOutlet resolves to nothing, but they signify to Xcode and Interface builder that these variables and methods can be used in Interface builder to link UI elements to your code. If … Read more
Here’s what worked for me: Open the XIB file causing problems Click on file’s owner icon on the left bar (top one, looks like a yellow outlined box) If you don’t see the right-hand sidebar, click on the third icon above “view” in your toolbar. This will show the right-hand sidebar In the right-hand sidebar, … Read more
I resolved this issue as I was typing the question. I figured I’d answer my question and leave it here for anyone else who may face this issue when using Xcode 6 beta 4. To resolve this issue, you need to select each of your custom class objects in Storyboard (this includes any custom views, … Read more
The current recommended best practice from Apple is for IBOutlets to be strong unless weak is specifically needed to avoid a retain cycle. As Johannes mentioned above, this was commented on in the “Implementing UI Designs in Interface Builder” session from WWDC 2015 where an Apple Engineer said: And the last option I want to … Read more
You may have a bad connection in your xib. I’ve had this error many times. While TechZen’s answer is absolutely right in this case, another common cause is when you change the name of a IBOutlet property in your .h/.m which you’ve already connected up to File’s Owner in the nib. From your nib: Select … Read more