Ctrl-Drag from button to method not working. Xcode

Question

I am building an iOS app and i have most of the code/GUI built (its a single view app). Now i have the .xib and controller.h file next to each other and I want to associate a button click with a certain action. Everytime I try nothing happens. The UI indictor that I am dragging shows up but it wont let me connect to the method. This happens for all the objects/methods.

I have an almost identical project that works just fine too!

Answer 1

Select your XIB file and then select "Files Owner" which is the yellow cube. In the Utilities Sidebar, select the Icon with the circle and arrow inside of it (which is the "Connections Inspector"). You can then Control + Drag your to your button.

//// Edit ////

After investigating your project... Pretty sure you deleted a storyboard and then added a .xib but didn't set it's class, or link it's view as an outlet.

To do that:

1. Select the new view (XIB), then selct the main view, and in the identity inspector, set it's class to your custom class name "AVYSViewController."

2. Switch to the connections inspector and Control + Drag the "view" outlet to the main view in your XIB.

Also, your project was looking for the MainStoryBoard.storyboard file. So get rid of that setting by selecting your project, then selecting your target, and in the "Summary" tab, delete anything in the "Main Storyboard" field.

Note: I checked to see if your project settings were valid before I deleted the storyboard setting and it returned NO errors, so beware of this problem for future projects.

Answer 2

I think i'm reading the same book as you (Big Nerd Ranch's "iOS Programming"). If so then yeah, I had the same issue as you. Admittedly I am using my laptop to vnc through to a mac box to work on xcode, so I thought it was vnc not capturing the keyboard properly, but turns out it wasn't vnc as I could right-click/cntl-click drag on other things.

Admittedly again I didn't do much research on why it wasn't working, but in the meantime I just right-clicked on the button, which shows the events that the button emits, then click-dragged the "Touch Up Inside" event and dropped it on the controller/owner, which then displayed the actions/methods to hook the event to. If you look on page 17 (if you are reading the same book) then that is the event that was hooked up.

Sorry if there are any obvious glaring errors with what I just say, have only just started reading this book today after a big lunch.

Answer 3

I think you should rephrase you question.. It's very confusing. But if i understand what you are saying, you now have the files open side-by-side in the using the assistant editor. The Xib file on the left hand side, the .h file on the right. correct?

Now you are trying to link the event in the control, to the method you have defined in the .h file. right?

So if you are in fact seeing the methods in the .h file that you want to link to, but the editor is not letting you link to it, then chances are that you have have the xib file side-by-side with the wrong .h file. Are you sure that the .xib file and the .h that are side-by-side are both called controller ? controller.h and controller.xib ?