Question

I have the following code:

NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];
NSMutableDictionary *golferIconsu = [userDefaults objectForKey:@"golferIconsFirstScene"];

NSMutableDictionary *golferIconsSceneOne = [[NSMutableDictionary alloc]initWithDictionary:golferIconsu];

NSMutableDictionary *savedScoreCards;

NSMutableDictionary *currentScoreCard;
[currentScoreCard setObject:golferIconsSceneOne forKey:@"golferIconsFirstScene"];

NSMutableDictionary *GI = [currentScoreCard objectForKey:@"golferIconsFirstScene"];

[savedScoreCards setObject:currentScoreCard forKey:@"1"];

NSLog([golferIconsSceneOne objectForKey:@"30101"]);
NSLog([GI objectForKey:@"30101"]);

At the end all that is printed out in my log is the first NSLog call, not the second one. For example:

NSLog([golferIconsSceneOne objectForKey:@"30101"]);

This prints out a string that I stored in that dictionary.

This one:

NSLog([GI objectForKey:@"30101"]);

Doesn’t print out anything at all.

How can I get the NSDictionary GI to have the exact same properties as golferIconsSceneOne, but I need to do this using the currentScoreCardDictionary, which contains golferIconsSceneOne?

Answer 1

Initialise your dictionary before setting object in it.

NSMutableDictionary *savedScoreCards = [[NSMutableDictionary alloc] init];
NSMutableDictionary *currentScoreCard = [[NSMutableDictionary alloc] init];