归档 & 反归档

如果想要实现归档和反归档的操作需要签订一个协议 NSCoding

[NSKeyedArchiver archiveRootObject:stuArr toFile:documentPath];归档(写入)

- (void)encodeWithCoder:(NSCoder *)aCoder { // 归档
姓名"];
性别"];
爱好"];
年龄"];
}

NSArray *studentArray = [NSKeyedUnarchiver unarchiveObjectWithFile:documentPath];反归档(读取)
- (id)initWithCoder:(NSCoder *)aDecoder { // 反归档
    self = [super init];
    if (self) {
姓名"];
年龄"];
爱好"];
性别"];
    }
    return self;
}

存储与读取的两个button 的绑定方法

- (IBAction)save:(UIButton *)button {
唐启哲" age:19];
NSString *rootPath = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES)[0];
    
    NSString *allPath = [rootPath stringByAppendingPathComponent:@"person.data"];
    
    [NSKeyedArchiver archiveRootObject:person toFile:allPath];
}

- (IBAction)read:(UIButton *)button {
    NSString *rootPath = NSSearchPathForDirectoriesInDomains(NSCachesDirectory,NSUserDomainMask, YES)[0];
    
    NSString *allPath = [rootPath stringByAppendingPathComponent:@"person.data"];(若是person.plist文件 可加载一个数组)
    
    MSPersonModel *person = [NSKeyedUnarchiver unarchiveObjectWithFile:allPath];
    
    NSLog(@"%@ ---- %li", person.name, person.age);
}