Save a set of integers iPhone

Question

Hi

In my game I want to save a set of integers as statistics players can view. E.g number of deaths. This is an int I simply increase by one each time they get a game over.

How can I save this then have it at that number when I relaunch the game?

Thanks.

EDIT:

Ok after reading a few answers Im thinking writing to a plist is the way forward. I have been looking at tutorials but lets say I try this:

scoreData *score = [scoreData sharedData];
[dictionary setValue:score.highScore forKey:@"key2"];
[dictionary writeToFile:@"stats.plist" atomically:NO];

I have accessed my singleton with my score inside. Now when trying to setValue I get an error saying Im trying to convert an int to object.

Im not sure how else to approach it. It seems simple enough, however everywhere I look seem to give essentially the same approach.

Thanks for the help thus far, anymore is appreciated.

Answer 1

You can write to a file (i.e. plain C functions fopen() etc), can use your own classes and use NS(Keyed)Archiver, or use NSUserDefaults to save data.

Answer 2

Any number of a lot of ways.

If you are only saving this and maybe a couple other simple things, using user defaults is probably the best idea.

If however, you are saving a lot more items than just a few, you may want to either use your own property list (if the number of items is less than 200 or so).

If you have a lot of settings, I generally advise folks to look at Core Data instead. It's fast with lots of items, whereas the other two, not so much.

Answer 3

Try...

[[NSUserDefaults standardUserDefaults] setInteger:highScore forKey:@"HighScore"];
highScore = [[NSUserDefaults standardUserDefaults] integerForKey:@"HighScore"];

Answer 4

I would not abuse NSUserDefaults (Apple discouraged this at WWDC this year). Instead why not simply create an NSMutableDictionary and then store NSNumber objects in it. The MutableDictionary can easily be written to file and as is easily read in.