Question

如何存储自定义类到UserDefault中

Answer 1

@interface ViewController ()

@property (weak, nonatomic) IBOutlet UILabel *UserName;

@property (weak, nonatomic) IBOutlet UILabel *PassWord;

@property (weak, nonatomic) IBOutlet UILabel *a1;

@property (weak, nonatomic) IBOutlet UILabel *a2;

@end

@implementation ViewController

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation

{

return (interfaceOrientation !=UIInterfaceOrientationPortraitUpsideDown);

}

- (void)viewDidLoad {

[super viewDidLoad];

// Do any additional setup after loading the view, typically from a nib.

self.UserName = nil;

self.PassWord = nil;

}

//存储数据

-(void)saveNSUserDefaults {

//获得当前输入框的账号密码

NSString *string = self.UserName.text;

NSString *sth = self.PassWord.text;

//创建数据储存器，并按照KVC方式储存

NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];

[userDefaults setObject:string forKey:@"UserName"];

[userDefaults setObject:sth forKey:@"PossWord"];

}

-(void)readNSUserDefault {

//创建数据储存器

NSUserDefaults *Udefault = [NSUserDefaults standardUserDefaults];

//读取数据到各个label中

NSString *stt = [Udefault stringForKey:@"UserName"];

NSString *sst = [Udefault stringForKey:@"PossWord"];

self.UserName.text = stt;

self.PassWord.text = sst;

}

- (void)didReceiveMemoryWarning {

[super didReceiveMemoryWarning];

// Dispose of any resources that can be recreated.

}

@end

storeBoard创建的，你可以复制粘贴改一下再用，需要注意的是无论是存储还是删除还是读取时，nsnumber类型永远都是本身类型，也就说是自己的基本数据类型，如：
读取整型int类型的数据 NSInteger myInteger = [userDefaultes integerForKey:@"myInteger"];
而其他类型全向上文代码一样以对象类型存储，全手打望采纳

Answer 2

自定义类要实现要实现-
复制代码

(void)encodeWithCoder:(NSCoder *)coder

-
(id)initWithCoder:(NSCoder *)coder

然后使用
NSArchiver和NSUnArchiver保存