无法控制在故事板中的可可触摸uiview类和子视图之间的xcode中拖动

Question

I'm new to xcode and iOS . I'm following apple tutorial, but I can't figure out a thing.

In the tutorial, when there is the need of a connection between the storyboard and the ViewController.swift , it's done a connection using the control-drag from the storyboard to the viewController.swift , and it works like a charm.

If I add a subview to storyboard , apple does the connection and the declaration by code in a custom cocoa touch class that implements UiView Protocol , not using the control-drag .

Now, given the fact that is clear to me the code writted by apple, I'm just wondering why the control-drag doesn't work.

I've tried to do the same thing, adding a button via ui and then tried to control-drag to cocoa touch class, and I cannot do this.

But if I do the same thing, but trying to connect it to the ViewController.swift it works perfectly.

Now, I'm just wondering why this happens. Can't I use control-drag with a custom UiView ?

Thanks for answering.

Answer 1

You can only control-drag from outlet to view on xib, after creating outlet in code you will see a dot at the left side, you can drag from there to your view and outlet will work

Answer 2

In the storyboard, you have to set the class name to the view controller.

Answer 3

If you want to create a custom view that will have subview of it's own, you can do so using a Xib file (pretty much like a storyboard, but for only one view instead of for a whole app workflow) and then you'll be able to make all the connection you wish. Storyboard is not meant to design your customView. Connection are mainly used to provide a easy/cost-effective reach from the control grasp to it's main view's subviews (IBOutlets) or to '0 line' a target action pattern. One exception is with the custom tableView / collectionView cell though..

Answer 4

For connectioning between storyboard & class

you must in the storyboard -> customClass -> chose your class