ios 沙盒 preference 首选项 数据存储

- (IBAction)save {
// 1.利用NSUserDefaults,就能直接访问软件的偏好设置(Library/Preferences)
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

// 2.存储数据
[defaults setObject:@"mj" forKey:@"account"];
[defaults setObject:@"123" forKey:@"pwd"];
[defaults setInteger:10 forKey:@"age"];
[defaults setBool:YES forKey:@"auto_login"];

// 3.立刻同步
[defaults synchronize];
}

- (IBAction)read {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];

NSString *account = [defaults objectForKey:@"account"];
BOOL autoLogin = [defaults boolForKey:@"auto_login"];
NSLog(@"%@ -- %d", account, autoLogin);
}