如何重命名文件管理器中保存的文件目录

Question

我正在使用文件管理器保存视频：

   switch _captureState {
        case .start:
            print("Set up recorder")
            // Set up recorder
           // let dateFormat =  DateFormatter()
           // dateFormat.dateFormat = "MMM dd, yyyy 'at' hh:MM a"
           let creationDate =  "\(Date().millisecondsSince1970)" //dateFormat.string(from: Date())
            let projectInputName = projectName.replacingOccurrences(of: " ", with: "_")
            let sessionsNameInput = sessionsName.replacingOccurrences(of: " ", with: "_")
            let fullFilename = "ProjectName_\(projectInputName)_clientName_\(sessionsNameInput)_creationDate_\(creationDate)"
            
            let videoPath = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!.appendingPathComponent("\(fullFilename).mov")
            
            print("videoPath: \(videoPath)")
            
            let writer = try! AVAssetWriter(outputURL: videoPath, fileType: .mov)
            let settings = _videoOutput!.recommendedVideoSettingsForAssetWriter(writingTo: .mov)
            let input = AVAssetWriterInput(mediaType: .video, outputSettings: settings) // [AVVideoCodecKey: AVVideoCodecType.h264, AVVideoWidthKey: 1920, AVVideoHeightKey: 1080])
         //   let audioSettings =  audioOutput //_videoOutput!.recommendedVideoSettingsForAssetWriter(writingTo: .mov)
            let audioSettings : Dictionary = [
                AVFormatIDKey : kAudioFormatMPEG4AAC as AnyObject,
                AVNumberOfChannelsKey : 2,
                AVSampleRateKey : NSNumber(value: 48000.0 )
            ] as [String: Any]
            
            let audioInput = AVAssetWriterInput(mediaType: .audio, outputSettings: audioSettings )
        
            input.mediaTimeScale = CMTimeScale(bitPattern: 600)
            input.expectsMediaDataInRealTime = true
            audioInput.expectsMediaDataInRealTime = true
            input.transform = CGAffineTransform(rotationAngle: .pi/2)
            let adapter = AVAssetWriterInputPixelBufferAdaptor(assetWriterInput: input, sourcePixelBufferAttributes: nil)
            if writer.canAdd(input) {
                writer.add(input)
            }
            
            if writer.canAdd(audioInput) {
                writer.add(audioInput)
                NSLog("audio input added")
            }
//
            
            writer.startWriting()
            writer.startSession(atSourceTime:CMSampleBufferGetPresentationTimeStamp(sampleBuffer))
          
            _assetWriter = writer
            _assetWriterInput = input
            _assetWriterInputAudio = audioInput
            _adpater = adapter
            _captureState = .capturing
            _time = timestamp
        case .capturing:
        //    print(".capturing")
     
           
            if _assetWriterInput?.isReadyForMoreMediaData == true , output == _videoOutput {
                if !hasWrittenFirstVideoFrame {
                //    _assetWriter?.startSession(atSourceTime: CMSampleBufferGetPresentationTimeStamp(sampleBuffer))
                    hasWrittenFirstVideoFrame = true }
                let time = timestamp // - _time  //CMTime(seconds: (timestamp - _time).seconds, preferredTimescale: CMTimeScale(600))
              
                _adpater?.append(CMSampleBufferGetImageBuffer(sampleBuffer)!, withPresentationTime: time)
        
           
            }
//

//            if output == _videoOutput {
//                    if _assetWriterInput?.isReadyForMoreMediaData == true {
////                        let time = CMTime(seconds: timestamp - _time, preferredTimescale: CMTimeScale(600))
////                        _adpater?.append(CMSampleBufferGetImageBuffer(sampleBuffer)!, withPresentationTime: time)
//                        print(".capturing")
//                        let time = CMTime(seconds: timestamp - _time, preferredTimescale: CMTimeScale(600))
//                                      _adpater?.append(CMSampleBufferGetImageBuffer(sampleBuffer)!, withPresentationTime: time)
//                    }
//                }
            else if output == _audioOutput ,  _assetWriterInputAudio?.isReadyForMoreMediaData == true , hasWrittenFirstVideoFrame {
                    if  _assetWriterInputAudio?.isReadyForMoreMediaData == true {
                       // if !mute{
                        if mute {
                           let vc =  buffer()
                            vc.muteAudio(in: sampleBuffer)
                        }
                            _assetWriterInputAudio?.append(sampleBuffer)
                      //  }
                      
                    }
                }
            
            break
        case .end:
            print(".end")
//            BackgroundTask.run(application: UIApplication.shared)
//            { backgroundTask in
//                print(".end")
                guard _assetWriterInput?.isReadyForMoreMediaData == true , _assetWriterInputAudio?.isReadyForMoreMediaData == true, _assetWriter!.status != .failed else {  return }

                _assetWriterInput?.markAsFinished()
                _assetWriterInputAudio?.markAsFinished()
        
            let savingAssetWriter = self._assetWriter
            self._assetWriter = nil
            
            savingAssetWriter?.finishWriting { [weak self] in
                    print("capture state idle")
                    self?._captureState = .idle
                    self?._assetWriter = nil
                    self?._assetWriterInput = nil
                    self?._assetWriterInputAudio = nil
                }
          
            
break
            
        default:
            break
        }

这是保存后的文件路径： “/private/var/mobile/Containers/Data/Application/17DCBC0A-5FD1-4EE0-A30E-FF6E40AAA91C/Documents/ProjectName_Testing_With_Files_Version_2_clientName_Scale_Capacity_creationDate_1723149423479.mov”

我的目标是编辑Scale_Capacity（在clientName之后命名，但留下_creationDate_1723149423479.mov并保存回我的文件

Answer 1

例如，将名为“txt”的文件重命名为“newname.txt”。 txt”，您将运行以下命令