How do I play an audio file from Swift File Manager? - ios

Question

I'm trying to play a file I downloaded from S3, after locating the file and passing the URL to the audio player, the audio file won't play/is missing.
This is the complete fileURL: file:///var/mobile/Containers/Data/Application/61F2FC20-4C62-4263-B147-0010805BC0FA/Documents/Dump%20Trucks.mp3
Here is my code:
func playAudio(){
var soundClip: AVAudioPlayer?
if let directory = NSSearchPathForDirectoriesInDomains(FileManager.SearchPathDirectory.documentDirectory, FileManager.SearchPathDomainMask.allDomainsMask, true).first{
let path = NSURL(fileURLWithPath: directory).appendingPathComponent("Dump Trucks.mp3")
print("The path is \(String(describing: path))")
do {
soundClip = try AVAudioPlayer(contentsOf: path!)
soundClip?.play()
} catch {
print("Error: Audio File missing.")
}
}
}

Answer 1

The problem is that your player is a local variable. Thus your method comes to an end and the player is destroyed before it ever has a chance to start playing! Declare it as an instance property instead.
So
func playAudio(){
var soundClip: AVAudioPlayer?
Becomes
var soundClip: AVAudioPlayer?
func playAudio(){
This might not solve all your problems but if you don’t do it you certainly will never hear sound.

Answer 2

import Foundation
import AVFoundation
final class MediaPlayer {
static var player = AVAudioPlayer()
class func play() {
do {
let file = Bundle.main.url(forResource: "file_name", withExtension: "mp3")!
player = try AVAudioPlayer(contentsOf: file)
player.numberOfLoops = 0 // loop count, set -1 for infinite
player.volume = 1
player.prepareToPlay()
try AVAudioSession.sharedInstance().setCategory(.playback, mode: .default, options: [])
try AVAudioSession.sharedInstance().setActive(true)
player.play()
} catch _ {
print("catch")
}
}
}