Storyboard won't instantiate my class

Subject: Storyboard won't instantiate my class
From: Rick Aurbach <email@hidden>
Date: Thu, 13 Feb 2014 16:53:48 -0500
Acceptlanguage: en-US
Thread-topic: Storyboard won't instantiate my class

This problem involves Storyboards (no XIBs) in an iOS7 application implemented in Xcode 5.0.2.

I have a UITableView which contains a cell prototype which includes a custom UILabel subclass. However, when I instantiate a cell using this cell prototype, the object instantiated in cell’s contentView is a UILabel, not my custom subclass.

None of my subclass methods is called.

Here is the relevant section of the storyboard:

<tableViewCell contentMode="scaleToFill" selectionStyle="none"

hidesAccessoryWhenEditing="NO" indentationLevel="1" indentationWidth="0.0"

reuseIdentifier="TappableLabelCell" rowHeight="36" id="Gny-Z4-398">

<tableViewCellContentView key="contentView" opaque="NO" clipsSubviews="YES"

multipleTouchEnabled="YES" contentMode="center" tableViewCell="Gny-Z4-398"

id="XhW-zd-BfE">

<label opaque="NO" clipsSubviews="YES" userInteractionEnabled="NO" tag="1"

contentMode="left" horizontalHuggingPriority="251"

verticalHuggingPriority="251" fixedFrame="YES" text="tap to choose"

lineBreakMode="tailTruncation" baselineAdjustment="alignBaselines"

adjustsFontSizeToFit="NO" translatesAutoresizingMaskIntoConstraints="NO"

id="Bpv-bz-HXh" customClass="AATappableLabel">

</label>

</subviews>

</tableViewCellContentView>

</tableViewCell>

And just to be thorough, AATappableLabel.h looks like:

@interface AATappableLabel : UILabel

@property (strong, nonatomic) NSString * placeholder;
@property (strong, nonatomic) NSString * identifier;
@property (weak, nonatomic) id <AATappableLabelDelegate> delegate;

- (BOOL)hasText;

@end

Notice that the storyboard recognizes that the label ought to instantiate a custom class (see red text above), but that doesn’t happen

if I set breakpoints in the initxxx methods, they are never hit
if I break in the method where the cell is instantiated, the debugger identifies the object as a UILabel, rather than an AATappableLabel.
Attempting to use an of AATappableLabel’s unique methods causes the expected exception.

Can anyone offer an idea about why this is happening? It looks like a bug to me, but I thought I’d see if anybody could point out a particularly stupid mistake that I’m making before I submit either an ADC incident or a Bug Report.

Thanks.

Cheers,

Rick Aurbach

Aurbach & Associates, Inc.

 _______________________________________________
Do not post admin requests to the list. They will be ignored.
Xcode-users mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:

This email sent to email@hidden

Follow-Ups:
- Re: Storyboard won't instantiate my class
  - From: Kyle Sluder <email@hidden>
- Re: Storyboard won't instantiate my class
  - From: Kyle Sluder <email@hidden>

Prev by Date: Re: Where to report this clang issue?
Next by Date: Re: Where to report this clang issue?
Previous by thread: Re: Where to report this clang issue?
Next by thread: Re: Storyboard won't instantiate my class
Index(es):
- Date
- Thread