IOS之【NSUserDefaults】

@implementation
 
- (void)viewDidLoad
{
    [superviewDidLoad];

self read];
}
 
读取偏好设置
- (void)read {
    NSUserDefaults *defaults = [NSUserDefaultsstandardUserDefaults];
NSString *useranme = [defaults objectForKey:@"username"];
NSString *password = [defaults objectForKey:@"password"];
BOOL autoLogin = [defaults boolForKey:@"auto_login"];
     
NSLog(@"%@-%@-%i",useranme, password, autoLogin);
}
 
存储偏好设置
- (void)save {
    // NSUserDefaults关联着沙盒中的Preferences文件夹
    NSUserDefaults *defaults = [NSUserDefaultsstandardUserDefaults];
     
    [defaults setObject:@"jamesWong" forKey:@"username"];
setObject:@"123" forKey:@"password"];
setBool:YES forKey:@"auto_login"];
     
    //  将数据同步到Preferences文件夹中
synchronize];
}
 
 @end