我想创建一个函数,如果UIbutton的音频播放完毕,该按钮将消失。
有没有可以在音频播放完毕后设置代码执行的功能?
我尝试设置队列以使UIbutton消失
DispatchQueue.main.asyncAfter(deadline: .now() + (audio duration)) {sender.alpha = 0}
但是我发现当我使用暂停按钮(我为停止音频而制作的按钮)时无法取消它。 在中途暂停音频时,DispatchQueue仍使UIbutton消失。
所以我正在寻找一个新的解决方案。
这是我的代码
import UIKit
import AVFoundation
class ViewController: UIViewController {
var player: AVAudioPlayer!
@IBOutlet var buttons: [UIButton]!
@IBOutlet weak var button: UIButton!
@IBOutlet weak var pause: UIButton!
@IBOutlet weak var mainStackView: UIStackView!
@IBOutlet weak var pirateBoy: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
pause.alpha = 0
}
//multiplication table action button
@IBAction func buttonPressed(_ sender: UIButton) {
playSound(soundName: sender.currentTitle!)
pause.alpha = 1
}
//pause action button
@IBAction func pausePressed(_ sender: UIButton) {
player.stop()
pause.alpha = 0
}
func playSound(soundName: String) {
let url = Bundle.main.url(forResource: soundName, withExtension: "m4a")
player = try! AVAudioPlayer(contentsOf: url!)
player.play()
}
}
答案 0 :(得分:0)
您可以使用 AVAudioPlayerDelegate's
方法 audioPlayerDidFinishPlaying(_:successfully:)
,
在声音播放完毕时调用。
class ViewController: UIViewController, AVAudioPlayerDelegate {
//rest of the code...
func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer, successfully flag: Bool) {
//write your code to hide the button here...
}
}