SWIFT

Question

代码：

import UIKit
import MediaPlayer 

class WelcomeView: UIViewController {

override func viewDidLoad() {
super.viewDidLoad()
var mediaPicker: MPMediaPickerController = MPMediaPickerController.self(mediaTypes:MPMediaType.Music)
mediaPicker.allowsPickingMultipleItems = false
mediapicker1 = mediaPicker

}

override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning() }

var mediapicker1 = MPMediaPickerController()

@IBAction func selectsong(sender: AnyObject) {
self.presentViewController(mediapicker1, animated: true, completion: nil)
}
}

didPickMediaItems 是委托方法/如何将委托设置为 mediapicker？在网站上它写得很简单，但我试过了，它在 swift 中不起作用。还有，选歌后怎么播放呢？

我用这个网站来创建它： media picker 以及一些来自苹果官方编程指南的关于创建 "hello world" 音乐应用程序的代码）以播放来自 allsongsquery()

的音乐

Answer 1

您需要将 MPMediaPickerControllerDelegate 协议添加到您的 UIViewController class:

class WelcomeView: UIViewController, MPMediaPickerControllerDelegate {

然后你可以将你的 MPMediaPickerController 的委托设置为 self:

mediaPicker.delegate = self

SWIFT - 无法设置 MPMediaPicker 委托

SWIFT - Can't set MPMediaPicker delegate

mpmediapickercontroller

ios