ios - xcode 4.3.3iphone-オブジェクトがリークされ、割り当てられたオブジェクトは後で参照されません

Question

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    self.listFeedConnection = nil;   // release our connection

    [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;   

    // create the queue to run our ParseOperation
    self.queue = [[NSOperationQueue alloc] init];

    // create an ParseOperation (NSOperation subclass) to parse the RSS feed data so that the UI is not blocked
    // "ownership of mediaListData has been transferred to the parse operation and should no longer be
    // referenced in this thread.
    //
    ParseOperation *parser = [[ParseOperation alloc] initWithData:listData delegate:self];

    [queue addOperation:parser]; // this will start the "ParseOperation"

    [parser release];
    [queue release];
    // ownership of mediaListData has been transferred to the parse operation
    // and should no longer be referenced in this thread
    self.listData = nil;
}

- (void)dealloc 
{
    [records release];
    [listFeedConnection release];
    [listData release];
    [queue release];

    [super dealloc];
}

Answer 1

エラーメッセージがXcode静的アナライザから送信された場合は、完全ではなく、誤検知が発生する可能性があることに注意してください。実際、コードに問題はありませんが、次のコードに置き換えてみることをお勧めします。

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    self.listFeedConnection = nil;   // release our connection

    [UIApplication sharedApplication].networkActivityIndicatorVisible = NO;   

    // create the queue to run our ParseOperation
    self.queue = [[[NSOperationQueue alloc] init] autorelease];

    // create an ParseOperation (NSOperation subclass) to parse the RSS feed data so that the UI is not blocked
    // "ownership of mediaListData has been transferred to the parse operation and should no longer be
    // referenced in this thread.
    //
    ParseOperation *parser = [[[ParseOperation alloc] initWithData:listData delegate:self] autorelease];

    [queue addOperation:parser]; // this will start the "ParseOperation"

    // ownership of mediaListData has been transferred to the parse operation
    // and should no longer be referenced in this thread
    self.listData = nil;
}