Not sure how to setup view object and connect with IBOutlet code

Question

I am trying trying to copy all of the functionality of this example app provided by Apple called AVCam: https://developer.apple.com/library/ios/samplecode/AVCam/Introduction/Intro.html#//apple_ref/doc/uid/DTS40010112-Intro-DontLinkElementID_2

I am 99% done with copying this code, but I just have one final problem. I have an IBOutlet statement that looks like this: @property (nonatomic, weak) IBOutlet MediaCapturePreviewView *previewView;

According to the Apple sample code, this outlet is supposed to be connected to a View object that has been placed on top of the normal/default view.

Here is a screenshot of what the Connections Inspector looks like in the Apple example:

You will notice that the IBOutlet called "previewView" has been connected to something called the "Cam Preview View".

Also, in this screenshot, you can see that I am able to select this View object by itself and that it shows a Referencing Outlet in it's connections inspector for the same IBOutlet and View Object:

My problem is that I cannot get the IBOutlet code to connect to this View Object. I have tried the normal behavior of clicking and dragging to make the connections but it just wants to create a new outlet. It will not let me connect to the outlet that I have already created.

I have been playing with this for 2 hours now and just can't get it to work like Apple's sample code.

Any help is greatly appreciated thank you.

Answer 1

In your .xib file, make sure that UIView class is assigned as AVCamPreviewView instead of UIView.

Answer 2

A few possible solutions:

1. Save the file with the IBOutlet you're trying to connect up (the source code, not the IB)
2. Clean, rebuild
3. Restart Xcode.