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[英]How to present view controller from right to left in iOS using Swift
[英]How Do I Present a Music Library With a View Controller for a MPMediaPickerControllerDelegate using Swift 3 iOS10?
我正在尝试关注使用MPMediaPickerControllerDelegate
来呈现音乐选择列表的最新帖子。
该教程位于以下URL:
http://www.justindoan.com/tutorials/
我正在使用此代码:
import UIKit
import MediaPlayer
class ViewController: UIViewController, MPMediaPickerControllerDelegate {
var mediapicker1: MPMediaPickerController!
override func viewDidLoad() {
super.viewDidLoad()
let mediaPicker: MPMediaPickerController = MPMediaPickerController.self(mediaTypes:MPMediaType.music)
mediaPicker.allowsPickingMultipleItems = false
mediapicker1 = mediaPicker
mediaPicker.delegate = self
self.presentViewController(mediapicker1, animated: true, completion: nil)
}
}
但是我发现了:
self.presentViewController(mediapicker1, animated: true, completion: nil)
不起作用。 不幸的是,Swift 3建议的自动解决方案也不起作用:
self.present(mediapicker1, animated: true, completion: nil)
此外,iOS 10 Beta发行说明,发现于:
https://www.scribd.com/doc/315770725/IOS-10-Beta-Release-Notes
在第10页,共18页,
MPMediaPickerController对象可能无法按预期显示。
我花了很多时间自己解决这个问题而没有成功。
有什么建议么?
完成以下步骤:
根据我们对评论的讨论,我最近在我最新的名为playmates的 app中使用了MPMediaPickerController
。 我正在和你分享工作代码。 我写了不言自明的代码。
import MediaPlayer
class viewControllerName: UIViewController,MPMediaPickerControllerDelegate {
//Below is Inaction for picking music from media library
@IBAction func btnMediaPickerAction(_ sender: UIButton) {
let mediaPicker: MPMediaPickerController = MPMediaPickerController.self(mediaTypes:MPMediaType.music)
mediaPicker.delegate = self
mediaPicker.allowsPickingMultipleItems = false
self.present(mediaPicker, animated: true, completion: nil)
}
// MPMediaPickerController Delegate methods
func mediaPickerDidCancel(_ mediaPicker: MPMediaPickerController) {
self.dismiss(animated: true, completion: nil)
}
func mediaPicker(_ mediaPicker: MPMediaPickerController, didPickMediaItems mediaItemCollection: MPMediaItemCollection) {
self.dismiss(animated: true, completion: nil)
print("you picked: \(mediaItemCollection)")//This is the picked media item.
// If you allow picking multiple media, then mediaItemCollection.items will return array of picked media items(MPMediaItem)
}
}
我在下面找到了代码中的缺陷:
self.present
而不是self.presentViewController
mediaPicker
全局实例。 与委托方法一样,您将获得MPMediaPickerController
的实例 添加隐私 - info.plist中的媒体库使用说明
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