NSUserDefaults를 이용해 상태 저장/가져오기

출처 : http://creative-xenos.tistory.com/19

Saving

NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];


// saving an NSString
[prefs setObject:@"TextToSave" forKey:@"keyToLookupString"];


// saving an NSInteger
[prefs setInteger:42 forKey:@"integerKey"];

// saving a Double
[prefs setDouble:3.1415 forKey:@"doubleKey"];

// saving a Float
[prefs setFloat:1.2345678 forKey:@"floatKey"];

// This is suggested to synch prefs, but is not needed (I didn't put it in my tut)
[prefs synchronize];

Retrieving

NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];


// getting an NSString
NSString *myString = [prefs stringForKey:@"keyToLookupString"];


// getting an NSInteger
NSInteger myInt = [prefs integerForKey:@"integerKey"];

// getting an Float
float myFloat = [prefs floatForKey:@"floatKey"];