如何使用NSKeyedArchiver實現自定義對象的序列化

要使用NSKeyedArchiver實現自定義對象的序列化，首先需要確保你的自定義對象遵循NSCoding協議。NSCoding協議包括兩個必須實現的方法：encodeWithCoder:和initWithCoder:。

1. 在你的自定義類中實現NSCoding協議的方法：

@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將自定義對象序列化為NSData對象：

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

NSData *data = [NSKeyedArchiver archivedDataWithRootObject:customObject];

3. 使用NSKeyedUnarchiver將NSData對象反序列化為自定義對象：

CustomObject *unarchivedObject = [NSKeyedUnarchiver unarchiveObjectWithData:data];

現在你已經成功地使用NSKeyedArchiver實現了自定義對象的序列化和反序列化。