A simple category on NSDictionary which allows localized values for string-based keys, built for @bowstreet. License: MIT - go on, have fun with it, but don't expect anything from us. You might ask politely, though - we're a nice bunch.

NSDictionary+Localized.h

#import <Foundation/Foundation.h>

@interface NSDictionary (Localized)

- (id)localizedValueForKey:(NSString *)aKey;

- (id)localizedValueForKey:(NSString *)aKey withLanguage:(NSString *)aLanguage;

@end

NSDictionary+Localized.m

#import "NSDictionary+Localized.h"

@implementation NSDictionary (Localized)

static NSString *defaultLanguage = @"en";

- (id)localizedValueForKey:(NSString *)aKey {
    return [self localizedValueForKey:aKey withLanguage:defaultLanguage];
}

- (id)localizedValueForKey:(NSString *)aKey withLanguage:(NSString *)aLanguage {
    
    id value = [self valueForKey:[NSString stringWithFormat:@"%@_%@", aKey, aLanguage]];
    
    if (value != nil) {
        return value;
    }
    
    return [self valueForKey:aKey];
}

@end