Question

请在每次点击内存增加的单元格时，在表视图中使用标识符执行segue有问题didSelectRow方法

以下是我的代码：

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    // firstly i need to check if edit button is true so i can select cell
    if isShowToolBar {
        // her for hold selected index
        let cell = tableView.cellForRow(at: indexPath) as? MovieDownloadedTableViewCell
        if let cell = cell {
        cell.movieCheckMarkImageView.isHidden = false
        cell.movieEmptyCircleImageView.isHidden = true
        operationDocumentDirectoryObject.dictionaryHoldIndexCellForDisplayWhichCellSelected.updateValue(indexPath.row, forKey: indexPath.row)
        // start hold URL
        operationDocumentDirectoryObject.dictionaryForHoldURLSelected.updateValue(operationDocumentDirectoryObject.arrayOfMovieURL![indexPath.row], forKey: indexPath.row)
        }// end the if let cell

    }else{
        // her for show the content folder
        let cell = tableView.cellForRow(at: indexPath) as? MovieDownloadedTableViewCell
        if let cell = cell {
            if cell.fetchURL!.pathExtension == "" {
                performSegue(withIdentifier: "ShowFolder", sender: indexPath.row)
            }else{

           // playing the video
        performSegue(withIdentifier: "PlayingMovie", sender: cell.fetchURL!.lastPathComponent)

            }// end the if for check path extenstion
        }// end the if let cell
        cell = nil

    }// end the if for the isShowToolbar

}

上述方法在执行segue 时出现内存泄漏，并导致内存增加（如果是cell.fetchURL！.pathExtension ==＆＃34;＆＃34;）也会造成内存泄漏

override func prepare(for segue: UIStoryboardSegue, sender: Any?) { if segue.identifier == "MoveFile" { if let destination = segue.destination as? MoveMovieViewController { destination.operationDocumentDirectoryObject.dictionaryForHoldURLSelected = self.operationDocumentDirectoryObject.dictionaryForHoldURLSelected } }else if segue.identifier == "ShowFolder" { if let destination = segue.destination as? ShowContentFolderMovieViewController { if let fetchIndex = sender as? Int { destination.operationDocumentDirectory.folderName = self.operationDocumentDirectoryObject.arrayOfMovieURL![fetchIndex].lastPathComponent } } }else if segue.identifier == "PlayingMovie" { // make an object for the playing video view controller if let destination = segue.destination as? PlayingMovieViewController { if let movieName = sender as? String { destination.operationDocumentDirectory.movieName = movieName } } }// end the condition for the segue }

虽然deinit在视图控制器中调用成功，但我仍然在泄漏并增加内存

请帮助我的错误代码是什么？

非常感谢

Answer 1

我怀疑你的代码中某处有一个强大的引用循环 - 尽管如此，据我所知，你所发布的内容并非如此。但是，你说你的deinit被成功调用了。您是否检查过您正在调用的所有视图控制器的deinits是否在预期的时间被调用（例如当您解除PlayingMovieViewController或ShowContentFolderMovieViewController时）？观察用于deinit打印语句的xcode调试控制台以检查内存中的适当版本是最好的方法。你的内存泄漏可能来自其他地方。您应该在代码中的其他地方寻找强引用（可能是代理人持有发件人对象？）。

在swift 3中使用带有标识符的performSegue泄漏内存

1 个答案: