load/save settings in iOS

to make it sample:

//Writing
[[NSUserDefaults standardUserDefaults] setInteger:1 forKey:@"anInt"];
[[NSUserDefaults standardUserDefaults] setDouble:1.2 forKey:@"aDouble"];
[[NSUserDefaults standardUserDefaults] setString:@"aString" forKey:@"aString"];
[[NSUserDefaults standardUserDefaults] synchronize];

//Reading:

int i = [[NSUserDefaults standardUserDefaults] integerForKey:@"anInt"]

Doh.

In saveSettings, I was missing my [prefs synchronize];