Swift - AVAudioPlayer not playing sound - ios

Question

I have a sound called speeding.mp3 and I am trying to make a AVAudioPayer instance with it by doing this in the root of the class:
let speedingAudioPlayer = try! AVAudioPlayer(contentsOfURL: NSBundle.mainBundle().URLForResource("speeding", withExtension: "mp3")!)
Then when I run the app it throws an error but I don't know why this is happening. The speeding.mp3 file is in the Bundle Resources drop down in Build Phases so it should find it fine. If I try to print out the URL in the simulator and paste it into Safari it loads and plays the file like normal. I am importing AVFoundation into the class and the framework into the project.

Answer 1

Use this code snippet to debug your error,
if let URL = NSBundle.mainBundle().URLForResource("speeding", withExtension: "mp3") {
do {
let speedingAudioPlayer = try AVAudioPlayer(contentsOfURL: URL)
} catch let error as NSError {
print(error.localizedDescription)
}
} else {
print("No such file exist")
}

Answer 2

I found another question where the var is placed outside the class because otherwise it would be deallocated by the phone.
AVAudioPlayer Object Sound Not Playing - Swift

Answer 3

import UIKit
import AVFoundation
class CustomAudioPlayer {
var audioPlayer : AVAudioPlayer!
override func viewDidLoad() {
super.viewDidLoad()
playSound("sound_file_name")
}
func playSound(soundName: String)
{
let alertSound = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource(soundName, ofType: "mp3")!)
do{
audioPlayer = try AVAudioPlayer(contentsOfURL:alertSound)
audioPlayer.prepareToPlay()
audioPlayer.play()
}catch {
print("Error getting the audio file")
}
}
}
Try this code for playing the sound.