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iOS Objective-C Basics (Retired) Foundation Framework NSDictionary

Posted by Francis Beaulieu
Francis Beaulieu
875 Points

NNSDictionary album

Can't find good answer,alway's say your dictionary doesn't have any values In Xcode it work well .....

NSDictionary *album2 =[[NSDictionary alloc]initWithObjectsAndKeys:@"Title",@"Abbey Road",@"artist",@"The Beatles",nil];

nsdictionary.mm 
NSDictionary *album =[[NSDictionary alloc]initWithObjectsAndKeys:@"Title",@"Abbey Road",@"artist",@"The Beatles",nil];

1 Answer

Steve Hunter
Steve Hunter
57,712 Points
Steve Hunter
Steve Hunter
57,712 Points

Hi Francis,

The key/value pairs are stored backwards, just as the init method states ... value (object) first, then the key. So, your code is pretty much what seems sensible - you just need to reverse each pair (and uncaptialize @"title")

NSDictionary *album = [[NSDictionary alloc] initWithObjectsAndKeys:@"Abbey Road", @"title", @"The Beatles", @"artist", nil];

I hope that makes sense!

Steve.