NSUserDefault - objcmemo @ ウィキ

NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];


/* データを登録 */
NSArray *array = [NSArray arrayWithObjects:@"Snoopy", @"Woodstock", nil];
[userDefaults setObject:array forKey:@"names"];
[userDefaults setInteger:32 forKey:@"age"];
[userDefaults setURL:[NSURL URLWithString:@"http://www.c-tipsref.com"] forKey:@"url"];
[userDefaults synchronize];

/* データを取得 */
NSInteger age = [userDefaults integerForKey:@"age"];
NSArray *names = [userDefaults objectForKey:@"names"];
NSURL *url = [userDefaults URLForKey:@"url"];

NSLog(@"%d", age);
NSLog(@"%@", names);
NSLog(@"%@", url);


// 削除
[userDefaults removeObjectForKey:@"names"];
[userDefaults removeObjectForKey:@"age"];