I am trying to play an audio file using the AVAudioEngine. I have seen several examples, and I'm just following the same steps. However, the sound is not being played. Here's my code:
var audioUrl = NSURL(fileURLWithPath: "my-path-to-audio-file")
var audioEngine = AVAudioEngine()
var myPlayer = AVAudioPlayerNode()
audioEngine.attachNode(myPlayer)
var audioFile = AVAudioFile(forReading: audioUrl, error: nil)
var audioError: NSError?
audioEngine.connect(myPlayer, to: audioEngine.mainMixerNode, format: audioFile.processingFormat)
myPlayer.scheduleFile(audioFile, atTime: nil, completionHandler: nil)
audioEngine.startAndReturnError(&audioError)
myPlayer.play()
The reason I am not simply using AVAudioPlayer is because I need to add later some effects.
Can anyone please help me out with that?
Thanks!
I ran your code, and it worked fine, there are three things I would check:
Make sure your file is found, so change your code to work with AVAudioPlayer just to check that the program knows where the file is, and that it can play it
Second, check where you are putting your statements, my example with the code is below.
import UIKit
import AVFoundation
class aboutViewController: UIViewController {
var audioUrl = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("chimes", ofType: "wav")!)
var audioEngine = AVAudioEngine()
var myPlayer = AVAudioPlayerNode()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
audioEngine.attachNode(myPlayer)
var audioFile = AVAudioFile(forReading: audioUrl, error: nil)
var audioError: NSError?
audioEngine.connect(myPlayer, to: audioEngine.mainMixerNode, format: audioFile.processingFormat)
myPlayer.scheduleFile(audioFile, atTime: nil, completionHandler: nil)
audioEngine.startAndReturnError(&audioError)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
#IBAction func testSound(sender: AnyObject) {
myPlayer.play()
}
}
Hope this helps, ask if you have any questions!
Related
I am trying to have a button that will play a sound when pushed.
The app I have has 6 buttons (with 6 different sounds). I only have one listed because I am trying to get one button to work correctly before doing the rest. I know the button is working (from the print command at the bottom), but it is not playing the sound.
import UIKit
import AVFoundation
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
var player : AVAudioPlayer?
#IBAction func buttonOne(_ sender: Any) {
func playSound() {
let url = Bundle.main.url(forResource: "drinking", withExtension: "mp3")!
do {
player = try AVAudioPlayer(contentsOf: url)
guard let player = player else { return }
player.prepareToPlay()
player.play()
} catch let error as NSError {
print(error.description)
}
}
print("Anakin: IT IS WORKING!")
}
}
Is it printing any error?
Can you try doing this?
let path = Bundle.main.path(forResource: "FILE NAME WITH EXTENSION", ofType:nil)!
let url = URL(fileURLWithPath: path)
do {
let sound = try AVAudioPlayer(contentsOf: url)
sound.play()
} catch {
// couldn't load file :(
}
I'm having some issues with getting sound from both of my speakers. I used this code to implement the sound:
if let soundURL = Bundle.main.url(forResource: "note1", withExtension: "wav") {
var mySound: SystemSoundID = 0
AudioServicesCreateSystemSoundID(soundURL as CFURL, &mySound)
// Play
AudioServicesPlaySystemSound(mySound);
}
Is it supposed to only play from one speaker on the computer?
Please be gentle with me, I'm totally new to programming :)
Thanks!
Best regards
Heres is the code, for those who want it:
import UIKit
import AudioToolbox
class ViewController: UIViewController{
let soundArray = ["note1", "note2", "note3", "note4", "note5", "note6", "note7"]
override func viewDidLoad() {
super.viewDidLoad()
}
#IBAction func notePressed(_ sender: UIButton) {
playingSound(soundFileName: soundArray[sender.tag - 1])
}
func playingSound(soundFileName : String) {
if let soundURL = Bundle.main.url(forResource: soundFileName, withExtension: "wav") {
var mySound: SystemSoundID = 0
AudioServicesCreateSystemSoundID(soundURL as CFURL, &mySound)
// Play
AudioServicesPlaySystemSound(mySound);
}
}
}
I am quite new to Xcode therefore apologies if the below requires a simple fix. Have created a simple button as a test for a different project, imported the mp3 file under the "Supporting Files" directory and the below is my code which is giving a number of errors due to tutorials I followed which were all using different versions of Xcode.
AVFoundation was also added to the project.
Errors:
Argument labels '(_:, error:)' do -- Extra argument 'error' in call
Use of unresolved identifier 'alertSound'
Code:
import UIKit
import AVFoundation
class ViewController: UIViewController {
var AudioPlayer = AVAudioPlayer()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
let alertSound = NSURL(fileURLWithPath: Bundle.main.path(forResource: "two", ofType: "mp3")!)
print(alertSound)
AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback, error: nil)
AVAudioSession.sharedInstance().setActive(true, error: nil)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
#IBAction func n2(_ sender: UIButton) {
var error:NSError?
AudioPlayer = AVAudioPlayer(contentsOfUrl: alertSound, error: &error)
AudioPlayer.prepareToPlay()
AudioPlayer.play()
}
}
For the first error:
Argument labels '(_:, error:)' do -- Extra argument 'error' in call
Objective C function which contains an error parameter and returns a boolean will be marked as a function which can potentially throw exceptions in Swift 3. You can handle the error using a do..try..catch construct.
You can check Apple Documentation on error handling here:
https://developer.apple.com/library/content/documentation/Swift/Conceptual/Swift_Programming_Language/ErrorHandling.html
The other error related to the AudioPlayer variable being a local variable which is being accessed outside of the scope.
var AudioPlayer = AVAudioPlayer()
// Declare alertSound at the instance level for use by other functions.
let alertSound = URL(fileURLWithPath: Bundle.main.path(forResource: "two", ofType: "mp3")!)
override func viewDidLoad() {
super.viewDidLoad()
print(alertSound)
do {
try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
try AVAudioSession.sharedInstance().setActive(true)
}
catch {
print("ERROR: \(error.localizedDescription)")
}
}
#IBAction func n2(_ sender: UIButton) {
do {
AudioPlayer = try AVAudioPlayer(contentsOf: alertSound)
AudioPlayer.prepareToPlay()
AudioPlayer.play()
}
catch {
print("ERROR: \(error.localizedDescription)")
}
}
I'm trying to add sound to an iOS app that I am writing. I keep getting the error message
"Incorrect argument label in call (have 'contentsOfURL:error:', expected "contentsOfURL:fileTypeHint:')".
I have tried tinkering with it in several ways, and I can't get it to build. Here is my code:
import UIKit import AVFoundation
class ViewController: UIViewController {
var Setup = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("DMSetup", ofType: "mp3")!)
var audioPlayer = AVAudioPlayer()
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
audioPlayer = AVAudioPlayer(contentsOfURL: Setup, error: nil)
audioPlayer.prepareToPlay()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
#IBAction func PlayKeySetup(sender: UIButton) {
audioPlayer.play()
}
}
Any suggestions? I'm a newbie at this, so I'm sure I'm missing something obvious.
xCode 7.3.1, OSX 10.11.4
Thanks.
Try this code:
var audioPlayer: AVAudioPlayer!
let path = NSBundle.mainBundle().pathForResource("yourfilename", ofType: "format")
let CREATE_ANY_VARIABLE = NSURL(fileURLWithPath: path!)
do {
try audioPlayer = AVAudioPlayer(contentsOfURL: CREATE_ANY_VARIABLE)
} catch let error as NSError {
print(error.debugDescription)
}
audioPlayer.prepareToPlay()
and then you can play anywhere in the function!
the problem in your code is the name of your var Setup is overlapping with another Setup method form the AVFoundation
Usually using uppercase to the properties name it's considered as a bad attitude, you should use setup
Try this code:
let setupUrl = NSBundle.mainBundle().URLForResource("DMSetup", withExtension: "mp3")
if (setupUrl == nil) {
print("Could not find file: DMSetup.mp3")
return
}
do { audioPlayer = try AVAudioPlayer(contentsOfURL: Setup!, fileTypeHint: nil) }
catch let error as NSError { print(error.description) }
if let player = audioPlayer {
player.prepareToPlay()
}
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?
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!
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
}