How do I apply UIAppearance Proxy properties to UILabel?

Question

I have been getting unreliable results while trying to apply UIAppearance proxy styles to the UILabel class proxy. For example, the following works as I would expect:

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Answer 1

I have subclassed UILabel

@interface SmallLabel : UILabel

@end

@implementation SmallLabel

- (id)initWithFrame:(CGRect)frame
{
    self = [super initWithFrame:frame];
    if (self) {
    }
    return self;
}

@end

Then I use appearanceWhenContainedIn:

UIFont *smallFont = [UIFont fontWithName:@"Arial" size:15];
[[SmallLabel appearanceWhenContainedIn:[UIView class], nil] setFont:smallFont];

This works to use the desired font for all SmallLabels in my app. I just need to set the Custom Class to SmallLabel in the XCode Identity Inspector. It does not seem to work with labels create programmatically, only those in NIBs.

After further testing this method does not always work reliably.