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// 定義名稱 define key
#define kIsActive @"isActive"
#define kUserName @"userName"
 
// 讀取資料
-(void)loadInfo {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSLog(@"Name : %@", [defaults stringForKey:kUserName]);
NSLog(@"isActive : %@", ([defaults boolForKey:kIsActive] ? @"YES" : @"NO"));
}
 
// 儲存資料
-(void)saveInfo {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
NSString *userName = @"Hank";
BOOL isActive = YES;
[defaults setObject:userName forKey:kUserName];
[defaults setBool:isActive forKey:kIsActive];
}
 
// 清除資料
-(void)clearInfo {
NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults];
 
[defaults removeObjectForKey:kUserName];
[defaults removeObjectForKey:kIsActive];
}
 
// 執行
- (void)viewDidLoad
{
[super viewDidLoad];
 
[self saveInfo];
[self loadInfo];
 
[self clearInfo];
[self loadInfo];
}
view rawNSUserDefaultsSample.m hosted with ❤ by GitHub

參考: NSUserDefaults Class Reference

http://whhnote.blogspot.tw/2012/02/ios-nsuserdefaults.html

 
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