Swift - 如何获取 iPhone 上所有照片和视频的列表？

Question

我希望能够查看存储在用户 iPhone 上的照片和视频的列表，以便允许他们选择要上传的文件。到目前为止，我已经在列表中显示照片但没有显示视频的地方工作。我用来显示照片库的代码如下：

@IBAction func btnAddPicOrVideo(sender: AnyObject) {

    let pickerC = UIImagePickerController()        
    pickerC.delegate = self        
    self.presentViewController(pickerC, animated: true, completion: nil)

}

正如我所提到的，我可以显示照片列表并选择其中一张。问题是我无法查看或选择任何视频。有没有办法指定要显示的图片和视频？或者，我必须单独显示图片和视频吗？

我目前正在模拟器上运行我的代码，并且我在本地存储了一个视频文件。

提前致谢。

Answer 1

class ScoutDetailPage: UIViewController,UIImagePickerControllerDelegate {

var picker:UIImagePickerController? = UIImagePickerController()
let imageView = UIImageView ()
{

override func viewDidLoad(){

        // Do any additional setup after loading the view.

self.loadOrTakePhotos()

}

func loadOrTakePhotos()

{

if(UIImagePickerController .isSourceTypeAvailable(UIImagePickerControllerSourceType.Camera))
    {
picker!.sourceType = UIImagePickerControllerSourceType.Camera
        picker?.delegate = self

self .presentViewController(picker!, animated: true, completion: nil)
            }

        }
        else if (pickersegment.selectedSegmentIndex == 1)
        {
            picker!.sourceType = UIImagePickerControllerSourceType.PhotoLibrary
            picker?.delegate = self

          self.presentViewController(picker!, animated: true, completion: nil)

        }
}
func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [NSObject : AnyObject]) {
 let pickedimage = info[UIImagePickerControllerOriginalImage] as! UIImage

imageView.image = pickedimage
            if (imageView.image != nil)
            {
                print("image not empty")

// Do something here.

picker .dismissViewControllerAnimated(false, completion: nil)

            }
            else
            {
                print("IMAGE VIEW NIL")
            }
        }

    func image(image: UIImage, didFinishSavingWithError error: NSErrorPointer, contextInfo:UnsafePointer<Void>) {

        if error != nil {
            let alert = UIAlertController(title: "Save Failed",
                message: "Failed to save image",
                preferredStyle: UIAlertControllerStyle.Alert)

            let cancelAction = UIAlertAction(title: "OK",
                style: .Cancel, handler: nil)

            alert.addAction(cancelAction)
            self.presentViewController(alert, animated: true,
                completion: nil)
        }
    }



}

Answer 2

我可以通过指定来解决这个问题

import MobileCoreServices

我更改了上面指定的代码：

@IBAction func btnAddPicOrVideo(sender: AnyObject) {

    let pickerC = UIImagePickerController()        
    pickerC.mediaTypes = [kUTTypeImage as NSString, kUTTypeMovie as NSString]
    pickerC.delegate = self        
    self.presentViewController(pickerC, animated: true, completion: nil)

}