iOS NSUserDefaults存储自定义模型数据

//将NSString 对象存储到 NSUserDefaults 中
NSString *uid = @"111111";
NSUserDefaults *user = [NSUserDefaults standardUserDefaults];
[user setObject: uid forKey:@"UID"];

NSUserDefaults *user = [NSUserDefaults standardUserDefaults];
NSString *uid = [user objectForKey:@"UID"];

#import <Foundation/Foundation.h>

@interface UserModel : NSObject<NSCoding>

@property (nonatomic, copy) NSString *name;       // 名字
@property (nonatomic, copy) NSString *userID;     // 用户ID
@property (nonatomic, copy) NSString *mobile;     // 手机号

@end

- (void)encodeWithCoder:(NSCoder *)aCoder
{
    [aCoder encodeObject:self.name forKey:@"name"];
    [aCoder encodeObject:self. userID forKey:@"userID"];
    [aCoder encodeObject:self. mobile forKey:@"mobile"];

}

- (nullable instancetype)initWithCoder:(NSCoder *)aDecoder
{
    if (self = [super init]) {

        self.name = [aDecoder decodeObjectForKey:@"name"];
        self.userID = [aDecoder decodeObjectForKey:@"userID"];
        self.mobile = [aDecoder decodeObjectForKey:@"mobile"];
  
    }
    
    return self;
}

UserModel *userModel = [UserModel new];
 
//赋值
userModel.name = @"松";
userModel.userID = @"136";
userModel.mobile = @"136";

//存储到NSUserDefaults（转NSData存）
NSData *data = [NSKeyedArchiver archivedDataWithRootObject: userModel];   
    
NSUserDefaults *user = [NSUserDefaults standardUserDefaults];
[user setObject:data forKey:@"userModel"];

NSUserDefaults *user = [NSUserDefaults standardUserDefaults];
 
//取出
NSdData *data = [user objectForKey:@"userModel"];
UserModel *model = [NSKeyedUnarchiver unarchiveObjectWithData:data];

-------------------------存储-----------------------------
NSMutableArray  *dataList = [NSMutableArray array];

for (int i = 0;i < 10;i++){

    UserModel *userModel = [UserModel new];
 
    //赋值
    userModel.name = @"松";
    userModel.userID = @"136";
    userModel.mobile = @"136";

    //存储到NSUserDefaults
    NSData *data = [NSKeyedArchiver   archivedDataWithRootObject: userModel];   
    
    [dataList addObject: data];
    
}
//转为不可变数组
NSArray *array = [NSArray arrayWithArray: dataList];
NSUserDefaults *user = [NSUserDefaults standardUserDefaults];
[user setObject: array forKey:@"userModelArray"];

-------------------------取值-----------------------------

NSUserDefaults *user = [NSUserDefaults standardUserDefaults];
 
//取出
NSArray *array = [user objectForKey:@"userModelArray"];
for (int i = 0;i < array.count;i++){
    UserModel *model = array[i];
}