Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

iOS Build a Simple iPhone App (iOS7) Refactoring into a Model Creating a Custom Class

Kunnath Raj
seal-mask
.a{fill-rule:evenodd;}techdegree
Kunnath Raj
iOS Development Techdegree Student 6,211 Points
Posted by Kunnath Raj
.a{fill-rule:evenodd;}techdegree
Kunnath Raj
iOS Development Techdegree Student 6,211 Points

Not able to get through Challenge Task 2 of 3. The code compiles successfully in Xcode though.

The code in Quote.h is as follows:

@interface Quote : NSObject { NSArray *_quotes; } // Add property here @property (nonatomic, readonly) NSArray *quotes;

  • (NSString *) randomQuote;

@end

The code in Quote.m is as follows:

import "Quote.h"

@implementation Quote

  • (NSArray *)quotes { if (_quotes == nil) { _quotes = @[@"1", @"2", @"3"]; } return _quotes; }

  • (NSString *) randomQuote {
    return @"Some Quote"; } @end

1 Answer

Stone Preston
Stone Preston
42,016 Points
Stone Preston
Stone Preston
42,016 Points

here is your issue:

@property (nonatomic, readonly)

that readonly attribute is whats causing the issue, make it strong instead:

@property (nonatomic, strong)
Kunnath Raj
seal-mask
.a{fill-rule:evenodd;}techdegree
Kunnath Raj
iOS Development Techdegree Student 6,211 Points
Kunnath Raj
.a{fill-rule:evenodd;}techdegree
Kunnath Raj
iOS Development Techdegree Student 6,211 Points

Thanks. For task 1, I tried @property (nonatomic) without strong (since objects are strong by default). It was consistently giving me errors, so the only other way I could make it work was by introducing readonly property (which wasn't needed as per the task and didn't make sense either). Thanks.