Play Sound Using AVFoundation with Swift 2 - swift

Question

I am trying to play a sound in my iOS app (written in Swift 2) using AVFoundation. I had it working with no issues with the previous version of Swift. I am using Xcode 7.0. I am not sure what the issue is and cannot find any additional info for Swift 2 regarding playing sounds. Here's my code for the sound part:
import AVFoundation
class ViewController: UIViewController {
var mySound = AVAudioPlayer()
override func viewDidLoad() {
super.viewDidLoad()
mySound = self.setupAudioPlayerWithFile("mySound", type:"wav")
mySound.play()
}
func setupAudioPlayerWithFile(file:NSString, type:NSString) -> AVAudioPlayer {
var path = NSBundle.mainBundle().pathForResource(file, ofType:type)
var url = NSURL.fileURLWithPath(path!)
var error: NSError?
var audioPlayer:AVAudioPlayer?
audioPlayer = AVAudioPlayer(contentsOfURL: url, error: &error)
return audioPlayer!
}
}
I am getting this error but have a feeling there maybe some other issue:
'NSString' is not implicitly convertible to 'String'; did you mean to use 'as' to explicitly convert?

Answer 1

Like Leo said
You need to implement do try catch error handling.
Here is another example of some code that will run sound when a button is pressed.
import UIKit
import AVFoundation
class ViewController: UIViewController {
#IBAction func play(sender: AnyObject) {
player.play()
}
#IBAction func pause(sender: AnyObject) {
player.pause()
}
var player: AVAudioPlayer = AVAudioPlayer()
override func viewDidLoad() {
super.viewDidLoad()
let audioPath = NSBundle.mainBundle().pathForResource("sound", ofType: "mp3")!
do {
try player = AVAudioPlayer(contentsOfURL: NSURL(fileURLWithPath: audioPath))
} catch {
// Process error here
}
}
}
I hope this helps!

Answer 2

You need to implement do try catch error handling. Try like this:
func setupAudioPlayerWithFile(file: String, type: String) -> AVAudioPlayer? {
if let url = NSBundle.mainBundle().URLForResource(file, withExtension: type) {
do {
return try AVAudioPlayer(contentsOfURL: url)
} catch let error as NSError {
print(error.localizedDescription)
}
}
return nil
}