Swift 5.1 Error: [plugin] AddInstanceForFactory: No factory registered for id <CFUUID

Question

App crashes with the following error message

2019-10-12 20:01:34.332334-0700 Awesome App[26368:3535170] [plugin] AddInstanceForFactory: No factory registered for         


        

Answer 1

I think it has to do with the AVAudioPlayer going out of scope before the simulator device is able to queue up the sound and play it...or something along those lines. I'm brand new to Swift and I have zero experience with iOS APIs.

Here's what I discovered after experimenting with the placement of:

var player: AVAudioPlayer!

The sound will either PLAY or NOT PLAY depending on the placement of the line above.

Regardless, the following error will always occur on my Simulator devices:

AddInstanceForFactory: No factory registered for id

(I'm on a Late 2013 MacBook Pro + MacOS Catalina + Xcode 11.7 and I tested this on an iPhone SE 2 simulator running iOS 13.7)

Although the error keeps occurring, I'm happy that I at least got the sound to play on the Simulator...

Error occurs and sound DOES NOT play...

import UIKit
import AVFoundation

class ViewController: UIViewController {
    func playTheSound() {
      // initializing the "player" variable within the "playTheSound()" function will cause the "AddInstanceForFactory: No factory registered for id" error and the sound WILL NOT play on the simulator
      var player: AVAudioPlayer! 

      let url = Bundle.main.url(forResource: "funny_sound", withExtension: "mp3")

      player = try! AVAudioPlayer(contentsOf: url!)
      player.play()     
    }
}

Error occurs and sound DOES play

import UIKit
import AVFoundation

class ViewController: UIViewController {
  // initializing the "player" variable at the class level will still cause the "AddInstanceForFactory: No factory registered for id" error to happen, but the sound will still play on the simulator
  var player: AVAudioPlayer! 

  func playTheSound() {
    let url = Bundle.main.url(forResource: "funny_sound", withExtension: "mp3")

    player = try! AVAudioPlayer(contentsOf: url!)
    player.play()       
  }
}