Question

我用于在文档目录中保存视频的片段（从AVCaptureMoviefileOutput收到的NSdata）

func captureOutput(captureOutput: AVCaptureFileOutput!, didFinishRecordingToOutputFileAtURL outputFileURL: NSURL!, fromConnections connections: [AnyObject]!, error: NSError!) {
    delegate?.recordingStopped?()

   var data = NSData(contentsOfURL: outputFileURL)
    let paths = NSSearchPathForDirectoriesInDomains(NSSearchPathDirectory.DocumentDirectory, NSSearchPathDomainMask.UserDomainMask, true)
    let documentsDirectory:AnyObject=paths[0]
    let dataPath=documentsDirectory.stringByAppendingPathComponent("/MyFolder")
    if (!NSFileManager.defaultManager().fileExistsAtPath(dataPath)) {
        NSFileManager.defaultManager() .createDirectoryAtPath(dataPath as String, withIntermediateDirectories: false, attributes: nil, error: nil)
    }

    var outputPathr = "\(dataPath)/TestproximityRwqxq.mp4"

    var success = data!.writeToFile(outputPathr as String, options: nil, error: nil)

}

如果用于其他视频（从NSbundle中挑选视频并转换为NSdata），相同的代码在模拟器中工作，但不能使用设备，请帮助

Answer 1

此代码工作正常，我们需要使用最低iOS版本为8.4（XCode 6.4）的设备。版本低于8.4的设备没有使用Swift2获取文档目录的内容。

Answer 2

我为swift5修改了以上解决方案，它对我有用。

func fileOutput(_ output: AVCaptureFileOutput, didFinishRecordingTo outputFileURL: URL, from connections: [AVCaptureConnection], error: Error?) {

    if (error != nil) {
        print("Error recording movie: \(error!.localizedDescription)")

    } else {
        if let data = NSData(contentsOf: outputFileURL) {

            let paths = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)
            let documentDirectory = paths[0]
            let docURL = URL(string: documentDirectory)!
            let dataPath = docURL.appendingPathComponent("/DIRECTORY_NAME")

            if !FileManager.default.fileExists(atPath: dataPath.absoluteString) {
              do {
                    try FileManager.default.createDirectory(atPath: dataPath.absoluteString, withIntermediateDirectories: true, attributes: nil)
                    self.directoryURL = dataPath
                    print("Directory created successfully-\(dataPath.path)")
                } catch let error as NSError{
                    print("error creating directory -\(error.localizedDescription)");
                }
            }

            let outputPath = "\(dataPath.path)/filename.mp4"
            let success = data.write(toFile: outputPath, atomically: true)
            // saving video into photos album.
            UISaveVideoAtPathToSavedPhotosAlbum(outputPath, nil, nil, nil)

        } 
    }
}

使用swift和avfoundation从设备中保存文档目录中的Capture会话

2 个答案: