如何釋放NSUrlConnection類對象，NSMutableData類對象？

Question

iam進行一個應用程序。在該iam中，使用NSUrlconnection類。下面是我的代碼。

- (void)viewDidLoad {
[super viewDidLoad];
responsedata = [[NSMutableData data] retain];
NSString *url = [NSString stringWithFormat:@"https://www.google.com"];
NSURL *URL = [NSURL URLWithString:url];
NSURLRequest *request=[[NSURLRequest alloc]initWithURL:URL];
[[NSURLConnection alloc] initWithRequest:request delegate:self];

[request release];
}

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

   [responsedata setLength:0];
}
 - (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
[responsedata appendData:data];
   }

  - (void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error {
    }
  - (void)connectionDidFinishLoading:(NSURLConnection *)connection {

     [connection release];
    }

在此代碼中，當執行iam時，它表示在responsedata = [[NSMutableData data] retain];內存泄漏responsedata = [[NSMutableData data] retain]; [[NSURLConnection alloc] initWithRequest:request delegate:self]; 在viewDidLoad() SO中，請告訴我它的發布位置。

Answer 1

1. 您應該保存對NSURLConnection引用：

   NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];

2. 您應該啟動它：

   [connection start];

3. 並且您應該在didFailWithError或connectionDidFinishLoading釋放它。