Objective-C代理:让我调用另一个解析XML的类.需要知道什么时候外部完成

// 定义XML解析协议
@protocol XMLParserDelegate <NSObject>
- (void)parserDidFinishParsing:(XMLParser *)parser;
@end

// XML解析类
@interface XMLParser : NSObject
@property (nonatomic, weak) id<XMLParserDelegate> delegate;
- (void)parseXML:(NSString *)xmlString;
@end

// 代理类
@interface ProxyClass : NSObject <XMLParserDelegate>
- (void)parseXML:(NSString *)xmlString;
@end

@implementation ProxyClass
- (void)parseXML:(NSString *)xmlString {
    XMLParser *parser = [[XMLParser alloc] init];
    parser.delegate = self;
    [parser parseXML:xmlString];
}

- (void)parserDidFinishParsing:(XMLParser *)parser {
    // 解析完成后的处理逻辑
}
@end