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Home/ Questions/Q 7781745
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Editorial Team
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Editorial Team
Asked: June 1, 20262026-06-01T19:19:34+00:00 2026-06-01T19:19:34+00:00

I am working on the ZBarReader and getting an error Unknown class ZBarReaderView in

  • 0

I am working on the ZBarReader and getting an error

Unknown class ZBarReaderView in Interface Builder file

[UIView setReaderDelegate:]: unrecognized selector sent to instance
0x6859f20

Please look at an attached image at here or below so that you can picture what I am doing so far :-

enter image description here

In the storyboard, I do have a view and its custom class is ZBarReadView. I also wire it with IBOutlet in header file. In m file, I do

viewReader.readerDelegate = self;

and the error is shown after right after that.

Can anybody please point out what I have screwed up….

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  1. Editorial Team
    Editorial Team
    2026-06-01T19:19:36+00:00Added an answer on June 1, 2026 at 7:19 pm

    I found the solution in a thread over here

    You need to add the following code in your applicationDidLaunch in your AppDelegate:

    // force view class to load so it may be referenced directly from NIB
    [ZBarReaderView class];

    Should be running fine after that.

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