从iOS中的图像选择器获取视频url

从照片库中选择视频url时遇到问题。当图像选择器出现时，它无法选择，但我尝试选择它。它能自动压缩图像，不会丢失图像选择器

这是我的密码

self.imagePickerController.sourceType = .savedPhotosAlbum
self.imagePickerController.delegate = self
self.imagePickerController.mediaTypes = [kUTTypeMovie as! String]

self.present(self.imagePickerController, animated: true, completion: nil)


func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    var videoURL: NSURL? = nil
    videoURL = info["UIImagePickerControllerReferenceURL"] as? NSURL
    print(videoURL)

    imagePickerController.dismiss(animated: true, completion: nil)
}

---

您可以从

info

获取视频url，例如

videoURL = info[UIImagePickerControllerMediaURL] as? URL
print("videoURL:\(String(describing: videoURL))")
self.dismiss(animated: true, completion: nil)

---

使用以下代码选择未经压缩的视频：

func imagePickerController(_ picker: UIImagePickerController,
                             didFinishPickingMediaWithInfo info: [String : Any]) {

    let mediaType = info[UIImagePickerControllerMediaType] as? String
    let videoString = kUTTypeVideo as? String
    let movieString = kUTTypeMovie as? String

    if (mediaType == videoString) || (mediaType == movieString) {
      var videoRef = info[UIImagePickerControllerReferenceURL] as? URL
      var refResult = PHAsset.fetchAssets(withALAssetURLs: [videoRef], options: nil) as? PHFetchResult
      var videoRequestOptions = PHVideoRequestOptions()
      videoRequestOptions.version() = .original
      PHImageManager.default().requestAVAsset(forVideo: refResult.firstObject as? PHAsset ?? PHAsset(), options: videoRequestOptions, resultHandler: {(_ asset: AVAsset, _ audioMix: AVAudioMix, _ info: [AnyHashable: Any]) -> Void in
        if (asset is AVURLAsset) {
          var originURL: URL? = (asset as? AVURLAsset)?.url
          // Now you have the URL of the original video.
          picker.dismiss(animated: true, completion: nil)
        }
        else
        {
          picker.dismiss(animated: true, completion: nil)
        }
      })
    }
  }  

---

在Swift 4.2中，您必须使用Apple提供的新枚举来捕获视频URL：

// Using the full key
if let url = info[UIImagePickerController.InfoKey.mediaURL] as? URL {
    // Do something with the URL
}

// Using just the information key value
if let url = info[.mediaURL] as? URL {
    // Do something with the URL
}

您可以阅读关于

mediaURL

指定电影的文件系统URL

就这么简单

extension HomeVC: UIImagePickerControllerDelegate, UINavigationControllerDelegate {
    func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
        let videoUrl = info[UIImagePickerControllerMediaURL] as! URL
        // Do something with the videoUrl

        DispatchQueue.main.async { // Dismiss it, remember using `picker`
            picker.dismiss(animated: true, completion: nil)
        }
    }
}

在Swift 4.2中：

func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [UIImagePickerController.InfoKey : Any]) {
    picker.dismiss(animated: true, completion: nil)
    guard let mediaURL = info[UIImagePickerController.InfoKey.mediaURL] as? URL else { return }
    // You can do whatever youo want here....
}

---

尝试以下操作：picker.discouse（动画：true，completion:nil）self.present（self.imagePickerController，动画：true，completion:nil），在此代码后，在选择视频或选择视频后打开视频库，视频库自动压缩且pickerview未显示，请勿使用

字符串（描述：）

，它不会做你认为它会做的事。使用一个普通的字符串初始值设定项-或者在这种情况下更好，只需在插值中插入

videoURL

。但是由于self.present（self.imagePickerController，动画：true，完成：nil）的原因，此函数不会被调用