I have a relatively confusing problem: I created several empty Xcode projects and ran the iPhone and iPad emulators just to see what happens and everything is fine, empty, but fine. However, then I decided to actually add some content but when I double click my .xib file nothing happens. The Xcode loses focus, but nothing opens. The Interface Builder simply does not open.
Do I need to start it separately somehow or do I need to download and install it separately or something else altogether?
First, in Xcode, go to the Resources folder from the tree view on the left and select MainMenu. xib . It will open in the main view. This is where you are going to build you UI.
Conclusion. After looking at the pros and cons of both Storyboard and SwiftUI, according to my opinion building app UI using storyboard is comparatively easier for a beginner, and has been there was a very long time, but there are some flaws with it and that flaws have been taken care of in Swift UI.
Interface Builder The first is an editor, where you write the Swift code that makes your application run. The second is Interface Builder, which is the part where you lay out the graphical interface of your program—the buttons, toolbars, menus, images, and text that make up how your users interact with your program.
To create a new control with the Xcode Interface Builder, first select the storyboard you'd like to edit. Then, open the Xcode Library dialog (View > Show Library) and drag the control to your storyboard. Next, open up the corresponding view controller header file. For a blank "Single View" Xamarin.
I had the same problem when i first installed xcode.
What solved it for me was manually starting the Interface Builder once (via spotlight).
After that it worked again by double clicking on the xib file in xcode....
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