Open Radar

 
Summary:
In an IBDesignable subclass of UIButton, when calling setTitle: programmatically ... the title shows up *blank* in IB — UNLESS the default value (e.g., “Button”) is first DELETED from the corresponding field in IB.  (The customized title text does show up properly at runtime.)

Sample code:

@interface CustomButton : UIButton
@end

IB_DESIGNABLE
@interface CustomButton ()
@property (nonatomic, strong) IBInspectable NSString *buttonStyle;
@end

-(void)setButtonStyle:(NSString *)styleName {
    if ([styleName isEqualToString:@"edit"]) {
        [self setTitle:@"Foo" forState:UIControlStateNormal];
    }
}

Steps to Reproduce:
In Interface Builder ...
- Add a “Button” from the Object library to a view controller’s view
- Change its Class to a custom subclass containing the IBInspectable code below
- In IB’s Attributes Inspector, change the Button Style to the string value referenced in the code
- Once IBDesignable updates, observe that the button title being set in code is missing in the canvas in IB.
… Now, delete the default title in IB (“Button”), and see that the programmatically-set title is now displayed.
[Note: The issue does not appear at app runtime.]


Expected Results:
IB should display the custom title set programmatically when the IBInspectable setter method is called, regardless of the value set in IB.

Version:
OS X 10.9.5, Xcode 6.1.1; OS X 10.10.2, Xcode 6.3b3


Attachments:
'button-title-1a.png' and 'button-title-1b.png' were successfully uploaded.