Data serialization and preference settings

Source: Internet
Author: User
Tags xml attribute

ISO Common serialization methods:
(1) XML attribute list (plist) archive
(2) Preference (preferences)
(3) Nskeyedarchiver Archive (nscoding)
(4) SQLite3
(5) Coredate

Preferred Settings :
Used to store user names and passwords, and switch status
Benefits: (1) Do not care about file names; (2) Do key-value storage

//存数据NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];//自动生成一个 plist 文件,存放在偏好设置文件夹[defaults setObject:@"OBJ" forKey:@"Key"];//同步操作:把内存数据与硬盘数据同步[defaults synchronize];//取数据id obj = [defaults objectForKey:@"Key"];

Data serialization and preference settings

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