Question

我正在尝试将OAuthConsumer与API进行交互。当“self”关键字为空时，我遇到了委托问题。

当下面的代码放在唯一的viewController里面时，一切正常。当代码放在一个名为wpOAuth的类中时，然后从viewController调用“self”关键字为空，这会导致此错误： requestTokenTicket：didFinishWithData：]：无法识别的选择器发送到实例0x7172ac0

-(void)getKey:(UIViewController *) uiViewController{
    NSLog(@"\n\nGet Key!!!!!");
    OAConsumer *consumer = [[OAConsumer alloc] initWithKey:@"fsdfsdsdfsdfsdf"
                                                    secret:@"sdfdsfsdfsdf"];

    NSURL *url = [NSURL URLWithString:@"http://api-public.netflix.com/oauth/request_token"];

    OAMutableURLRequest *request = [[OAMutableURLRequest alloc] initWithURL:url
                                                                   consumer:consumer
                                                                      token:nil   // we don't have a Token yet
                                                                      realm:nil   // our service provider doesn't specify a realm
                                                          signatureProvider:nil]; // use the default method, HMAC-SHA1

    [request setHTTPMethod:@"POST"];

    OADataFetcher *fetcher = [[OADataFetcher alloc] init];

    [fetcher fetchDataWithRequest:request
                         delegate:self
                didFinishSelector:@selector(requestTokenTicket:didFinishWithData:)
                  didFailSelector:@selector(requestTokenTicket:didFailWithError:)];
}

- (void)requestTokenTicket:(OAServiceTicket *)ticket didFinishWithData:(NSData *)data {
    if (ticket.didSucceed) {
        NSString *responseBody = [[NSString alloc] initWithData:data
                                                       encoding:NSUTF8StringEncoding];
        //requestToken = [[OAToken alloc] initWithHTTPResponseBody:responseBody];
        NSLog(@"%@",[[OAToken alloc] initWithHTTPResponseBody:responseBody]);
        NSLog(@"\nticket is????????????????????????????= %@ ",ticket.body);
    }
}

任何关于self关键字为空的原因都会非常感激！

谢谢， 4D

Answer 1

我不熟悉以这种方式处理的代理，但我认为您需要在标头中添加- (void)requestTokenTicket:(OAServiceTicket *)ticket didFinishWithData:(NSData *)data;来定义方法。看起来OADataFetcher没有使用协议，所以当它试图在你的对象上调用方法时，它是不可见的，因为你没有定义它。

用于委托的“Self”关键字为空

1 个答案: