Question

（在MAC OSX-Xcode中）我尝试使用NSURLConnection类通过FTP读取文件，如果我的代码在主Application Delegate类（AppDelegate）中但是如果我在外面使用它（另一个.h .m文件）它工作正常）没有调用连接委托。

任何帮助！？

这是我的代码：

-(void)getURL {

NSURLRequest *theRequest=[NSURLRequest requestWithURL:[NSURL URLWithString:@"ftp://.... connection string with file"]
                                          cachePolicy:NSURLRequestUseProtocolCachePolicy
                                      timeoutInterval:60.0];

NSURLConnection *connection=[[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
if (connection) {

    // Do something

} else {
    // Inform the user that the connection failed.
    NSLog(@"connection failed");
}

}

代表：

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse  *)response

{

NSLog(@"didReceiveResponse");

}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection

{

NSLog(@"connectionDidFinishLoading");

}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data

{

//Getting file data
[receivedData appendData:data];

}

Answer 1

您是否已将代理<NSURLConnectionDelegate>添加到您尝试使用它的视图控制器中？

例如

@interface ViewController : UIViewController <NSURLConnectionDelegate>

NSURLConnectionDataDelegate只适用于App Delegate

1 个答案: