如何從CustomURLConnection獲取標籤？

Question

我正在使用此代碼片段http://snipplr.com/view/43115/，我不知道如何訪問標籤屬性以對connectionDidFinishLoading中的數據執行不同的操作？

Answer 1

是的，但該方法的參數是URLConnection類型，而不是CustomURLConnection。如果您知道該對象實際上是CustomURLConnection，則可以重新投射它並提取「標記」屬性：

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

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

    // Do something with the dataForConnection. 
}