• XML屬性列表(plist)歸檔

NSArray *arr1 = @[@"a",@"b",@"c"];
NSString *filePath = @"xxx.data";
// 存儲
[arr1 writeToFile:filePath atomically:YES];
// 讀取
NSArray *arr2 = [NSArray arrayWithContentsOfFile:filePath];

• Preference(偏好設置)

NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults]
// 存儲
[userDefaults setObject:@"chaselen" forKey:@"username"];
[userDefaults setBool:YES forKey:@"rememberPwd"];
// 讀取
NSString *username = [userDefaults objectForKey:@"username"];
BOOL rememberPwd = [userDefaults BoolForKey:@"rememberPwd"];

• NSKeyedArchiver歸檔(NSCoding)

  自定義的類遵守<NSCoding>協議（實現encodeWithCoder方法和initWithCoder方法）

• SQLite3

• Core Data