如何使用NSKeyedArchiver实现自定义对象的序列化

要使用NSKeyedArchiver实现自定义对象的序列化，首先需要确保你的自定义对象遵循NSCoding协议。NSCoding协议包括两个必须实现的方法：encodeWithCoder:和initWithCoder:。

1. 在你的自定义类中实现NSCoding协议的方法：

@interface CustomObject : NSObject <NSCoding>

@property (nonatomic, strong) NSString *name;
@property (nonatomic, assign) NSInteger age;

@end

@implementation CustomObject

- (void)encodeWithCoder:(NSCoder *)encoder {
    [encoder encodeObject:self.name forKey:@"name"];
    [encoder encodeInteger:self.age forKey:@"age"];
}

- (instancetype)initWithCoder:(NSCoder *)decoder {
    self = [super init];
    if (self) {
        self.name = [decoder decodeObjectForKey:@"name"];
        self.age = [decoder decodeIntegerForKey:@"age"];
    }
    return self;
}

@end

2. 使用NSKeyedArchiver将自定义对象序列化为NSData对象：

CustomObject *customObject = [[CustomObject alloc] init];
customObject.name = @"John";
customObject.age = 30;

NSData *data = [NSKeyedArchiver archivedDataWithRootObject:customObject];

3. 使用NSKeyedUnarchiver将NSData对象反序列化为自定义对象：

CustomObject *unarchivedObject = [NSKeyedUnarchiver unarchiveObjectWithData:data];

现在你已经成功地使用NSKeyedArchiver实现了自定义对象的序列化和反序列化。