How to stop AVAudioPlayer from colliding with other sound from another viewcontroller? - swift

Question

I have two view controllers for this app. The first one includes a button that can be clicked for a video to play. The second one has a list of songs which can be played. My problem is when I play a song from the 2nd controller, the background music collides with the sound of the video. I want the music from the 2nd controller to stop and not to collide with the sound of the video from the 1st controller.
I tried to use this code in the 1st controller but it didn't work:
audioPlayer.stop()
It gives an error saying that it is "EXC_BAD_ACCESS Swift"
Could anyone please help me? Thx :)

Answer 1

As per my understanding you need to manage A single player throughout your app. In my one project I managed to use it in following way. Please check if that helps you
struct Manager
{
//Required Objects - AVFoundation
///AVAudio Session
static var recordingSession: AVAudioSession!
///AVAudio Recorder
static var recorder: AVAudioRecorder?
///AVAudio Player
static var player: AVAudioPlayer?
///Bool to check an audio is being played or not
static var recordingalreadyPlayedStatus = Bool()
}
Select File From MainSource and Play it
//MARK: Button Handler
/**
Function is used to play selected Row music Audio File
- parameter sender : UIButton Reference
*/
#objc func playButtonHandler(sender: UIButton)
{
let buttonPosition : CGPoint = sender.convert(CGPoint.zero, to: self.recordingListTableView)
let indexPath : IndexPath = self.recordingListTableView.indexPathForRow(at: buttonPosition)!
///Check is Recorder is Recording Sound ?
if (Manager.recorder != nil) {
return
}
///Check Audio Already Playing ?
/// Bool Used to check is anything getting Played
if (Manager.recordingalreadyPlayedStatus) {
///If yes
///Stop From Playing
if self.currentIndexPath == indexPath {
///Time to stop playing music
var cell = self.recordingListTableView.dequeueReusableCell(withIdentifier: "Cell") as! recordingListCell
cell = self.recordingListTableView.cellForRow(at: self.currentIndexPath) as! recordingListCell
cell.playButton.setImage(#imageLiteral(resourceName: "start"), for: .normal)
Manager.player?.stop()
Manager.recordingalreadyPlayedStatus = false
self.currentIndexPath = indexPath
print("Stopped Playing Current Sound")
}
else {
///Time to stop playing music
var cell = self.recordingListTableView.dequeueReusableCell(withIdentifier: "Cell") as! recordingListCell
cell = self.recordingListTableView.cellForRow(at: self.currentIndexPath) as! recordingListCell
cell.playButton.setImage(#imageLiteral(resourceName: "start"), for: .normal)
Manager.player?.stop()
Manager.recordingalreadyPlayedStatus = false
///Play music at new index
self.playMusic(indexPath: indexPath)
}
}
else {
/// NoThing was Played lets play Directly
self.playMusic(indexPath: indexPath)
}
print("Starting to Play Sound")
}
Play Audio
//MARK: Play Music
/**
This Function get the URL of Audio and Plays it in View
*/
func playMusic(indexPath: IndexPath)
{
//get cell Index Status Using CGPoint
var cell = self.recordingListTableView.dequeueReusableCell(withIdentifier: "Cell") as! recordingListCell
cell = self.recordingListTableView.cellForRow(at: indexPath) as! recordingListCell
//Set Current value so we can change status if any other audio being played
self.currentIndexPath = indexPath
coreClassObject.initWithData(data: fileNameArray, index: indexPath.row)
//Play music now
let isMusicPlayed = RecordingManager.shared.playRecording(fileName: coreClassObject.audioFileName)
//Change Button status
if (isMusicPlayed)
{
//yes being played
//time to change button Text
cell.playButton.setImage(#imageLiteral(resourceName: "stop"), for: .normal)
}
else
{
//music is not played
cell.playButton.setImage(#imageLiteral(resourceName: "start"), for: .normal)
}
}
Function used to check is recording in progress if no, play Audio
//MARK: Play Recording at selected Index
/**
This function is used to check is any file being currently Played ?
if no, Play File else return bool that another file is being already played
- parameter fileName : File Name refer to Audio File name which is to be played
- returns : Bool That file is Successfully played or not
*/
func playRecording(fileName:String) -> Bool {
/// Just a bool used here to check is recording being played
/// Used to Update timer in TableView Cell
var recordingPlayed = Bool()
/// Whenever we need to play an audio file we will allocate player
/// Optional will let you compare that player is nil ?
if Manager.recorder == nil {
/// Player is found nil
/// Thus no Audio is being Played here
/// Yes, We can Play Sound
recordingPlayed = true
Manager.recordingalreadyPlayedStatus = true
//Set player with audio File
do {
try Manager.player = AVAudioPlayer.init(contentsOf: returnPathAtSelectedIndex(fileName: fileName))
//Set required delegates and Values
Manager.player?.delegate = self
Manager.player?.volume = 1.0
Manager.player?.prepareToPlay()
Manager.player?.play()
}
catch {
print("Error while playing music: \(error.localizedDescription)")
}
}
else {
/// Player is already playing a file
/// Can not play audio for now
recordingPlayed = false
Manager.recorder = nil
Manager.recordingalreadyPlayedStatus = false
}
return recordingPlayed
}