ios - 无法从另一个 ViewController 调用方法

Question

我正在尝试执行以下操作

 ReaderController *readerController =  [[[ReaderController alloc] init] autorelease];;
readerController.fileName = fileName;
[readerController handleSingleTap];

其中 handleSingleTap 是 ReaderController 中的一个方法，但我不能调用它..方法是下一个

 - (void)handleSingleTap:(UITapGestureRecognizer *)recognizer
{
#ifdef DEBUGX
    NSLog(@"%s", __FUNCTION__);
#endif

    ReaderDocument *document = [ReaderDocument unarchiveFromFileName:SAMPLE_DOCUMENT];

    if (document == nil) // Create a brand new ReaderDocument object the first time we run
    {
        NSArray *searchPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
        NSString *documentsDirectoryPath = [searchPaths objectAtIndex:0]; 
        NSString *path = [documentsDirectoryPath stringByAppendingPathComponent:[[NSString stringWithFormat:@"%@",fileName] stringByAppendingPathExtension:@"pdf"]];



        [self checkAndCreatePList];
        NSMutableDictionary* plistDict = [[NSMutableDictionary alloc] initWithContentsOfFile:pListPath];

        [plistDict setValue: [NSString stringWithFormat:@"%@",fileName]  forKey:@"fileName"];
        [plistDict writeToFile:pListPath atomically: YES];



//      NSString *filePath = [[NSBundle mainBundle] pathForResource:path ofType:nil];

        document = [[[ReaderDocument alloc] initWithFilePath:path password:nil] autorelease];
    }

    if (document != nil) // Must have a valid ReaderDocument object in order to proceed
    {
        ReaderViewController *readerViewController = [[ReaderViewController alloc] initWithReaderDocument:document];

        readerViewController.delegate = self; // Set the ReaderViewController delegate to self

#if (DEMO_VIEW_CONTROLLER_PUSH == TRUE)

        [self.navigationController pushViewController:readerViewController animated:YES];

#else // present in a modal view controller

        readerViewController.modalTransitionStyle = UIModalTransitionStyleCrossDissolve;
        readerViewController.modalPresentationStyle = UIModalPresentationFullScreen;

        [self presentModalViewController:readerViewController animated:YES];

#endif // DEMO_VIEW_CONTROLLER_PUSH

        [readerViewController release]; // Release the ReaderViewController
    }
}

有什么问题，为什么我不能调用此方法，我需要一些详细信息，感谢您的帮助

Answer 1

嗯，这很简单，你做到了:

[readerController handleSingleTap];

什么时候你应该做:

[readerController handleSingleTap:yourRecognizer];

或

[readerController handleSingleTap:nil];

如果您未能通过识别器参数，您将在需要 handleSingleTap: 时发送一个 handleSingleTap 信号