Change Button when Audio is finished Xcode

Question

i am making app with Xcode using Swift and i have mp3 file in my app and i have added Play and Pause Button in it but my problem is that when i click on Play button Pause button shows but when mp3 file finished playing there is still pause button display and i want it to change to Play button again automatically when audio finished . this is my code

 @IBAction func buttonPressed(_ sender: UIButton) {
    if player.isPlaying {

        player.stop()
        sender.setImage(UIImage(named:"play.png"),for: .normal)
    } else {
        player.play()
        sender.setImage(UIImage(named:"pause.png"),for: .normal)
    }


}

Thanks

Answer 1

You need to implement AVAudioPlayerDelegate in class:

class ViewController: UIViewController, AVAudioPlayerDelegate {
   ...

and use this function inside class:

func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer, successfully flag: Bool) {
    button.setImage(UIImage(named:"pause.png"),for: .normal)
}