How Do I Present a Music Library With a View Controller for a MPMediaPickerControllerDelegate using Swift 3 iOS10?

Question

I am trying to follow a recent post on using a MPMediaPickerControllerDelegate to present a music selection list.

The tutorial is found at this URL:

http://www.justindoan.com/tutorials/

I am using this code:

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)
        }
}

However I have found that the:

self.presentViewController(mediapicker1, animated: true, completion: nil)

does not work. Unfortunately, Swift 3's suggested automatic solution does not work either:

self.present(mediapicker1, animated: true, completion: nil)

Furthermore, the iOS 10 Beta Release Notes, found at:

https://www.scribd.com/doc/315770725/IOS-10-Beta-Release-Notes

says on page 10 of 18,

An MPMediaPickerController object may not display as expected.

I have spent a great deal of time looking to solve this issue on my own with no success.

Any suggestions?

Kithara

Your link is a mirror of beta documentation. You should always use the official documentation from Apple. iOS 10 is released and out of beta. – Hanser

@George Lee, I recently publish an app on appstore which present the Music Library With a View Controller for a MPMediaPickerControllerDelegate using Swift 3. Check if you have same requirement, then I can help you in detail(with code as well) – Boomerang

@Boomerang that would be nice. Could you share the code on this post? – Kithara

@GeorgeLee, I have written the working code in answer below. I also mention some discrepancies in your code. I am open to ideas. – Boomerang

Answer 1

Go through the steps:

1. Add 'NSAppleMusicUsageDescription' to your Info.plist for the privacy authority.
2. Make sure your Music app is available in your iPhone. It will not work in the simulator.

Decapitate

The plist key NSAppleMusicUsageDescription is not necessary for the code in the question to run properly. – Hanser

@Hanser In new iOS10, it will be a blank view comes out. Tested in iPhone6 Plus, iOS10. – Decapitate

This answer is correct. Addition of the NSAppleMusicUsageDescription in the info.plist does allow for the MPMediaPickerDelegate to display the music list. It will bring up a Privacy - Media Library Usage the Type: String, the Value: Yes. – Kithara

Answer 2

As per our discussion over comments, I recently use the MPMediaPickerController in my latest app named playmates. I am sharing the working code with you. I have written the self-explanatory code.

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)
            }
}

I found below discripencies in your code:

• use self.present not self.presentViewController
• No need to create global instance of mediaPicker. As in the delegate method you are getting the instance of MPMediaPickerController

Boomerang

This still does not allow me to select a song like it used to allow (brings up a list of songs to select) in iOS10. Unless I am following your instructions incorrectly. – Kithara

Add NSAppleMusicUsageDescription to your Info.plist. – Boomerang

Answer 3

Add Privacy - Media Library Usage Description in info.plist

Dissidence