如何从Custom URLConnection获取标签？

Question

我正在使用此代码段http://snipplr.com/view/43115/，我想知道如何访问tag属性以对connectionDidFinishLoading中的数据执行不同的操作？

Answer 1

是的，但方法的参数是URLConnection类型，而不是CustomURLConnection。如果您知道该对象实际上是CustomURLConnection，则可以重新构建它并提取“tag”属性：

- (void)connectionDidFinishLoading:(NSURLConnection *)connection {
    CustomURLConnection *myconn = (CustomURLConnection *)connection;
    NSLog(@"%@", myconn.tag);

    NSMutableData *dataForConnection = [self dataForConnection:(CustomURLConnection*)connection];
    [connection release];

    // Do something with the dataForConnection.
}