AVAudioPlayer Swift 3 不播放声音
AVAudioPlayer Swift 3 not playing sound
我将 AVFoundation.framework 添加到我的项目中。在我的项目导航器中,我添加了文件 "Horn.mp3",这是 1 秒的声音。
按下按钮(带有喇叭图像)时应播放声音,标签也应更改其文本。
标签正在更改其文本,但没有播放声音。
这是我的代码:
import UIKit
import AVFoundation
class ViewController: UIViewController {
@IBAction func hornButtonPressed(_ sender: Any) {
playSound()
hornLabel.text = "Toet!!!"
}
@IBOutlet weak var hornLabel: UILabel!
func playSound(){
var player: AVAudioPlayer?
let sound = Bundle.main.url(forResource: "Horn", withExtension: "mp3")
do {
player = try AVAudioPlayer(contentsOf: sound!)
guard let player = player else { return }
player.prepareToPlay()
player.play()
} catch let error {
print(error.localizedDescription)
}
}
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.
}
}
您需要将 AVPlayer
的声明移动到 class 级别。 AVPlayer
在方法中声明时无法播放声音。
class ViewController: UIViewController {
var player: AVAudioPlayer? // <-- notice here
@IBAction func hornButtonPressed(_ sender: Any) {
playSound()
hornLabel.text = "Toet!!!"
}
@IBOutlet weak var hornLabel: UILabel!
func playSound(){
let sound = Bundle.main.url(forResource: "Horn", withExtension: "mp3")
do {
player = try AVAudioPlayer(contentsOf: sound!)
guard let player = player else { return }
player.prepareToPlay()
player.play()
} catch let error {
print(error.localizedDescription)
}
}
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.
}
}
我将 AVFoundation.framework 添加到我的项目中。在我的项目导航器中,我添加了文件 "Horn.mp3",这是 1 秒的声音。
按下按钮(带有喇叭图像)时应播放声音,标签也应更改其文本。
标签正在更改其文本,但没有播放声音。
这是我的代码:
import UIKit
import AVFoundation
class ViewController: UIViewController {
@IBAction func hornButtonPressed(_ sender: Any) {
playSound()
hornLabel.text = "Toet!!!"
}
@IBOutlet weak var hornLabel: UILabel!
func playSound(){
var player: AVAudioPlayer?
let sound = Bundle.main.url(forResource: "Horn", withExtension: "mp3")
do {
player = try AVAudioPlayer(contentsOf: sound!)
guard let player = player else { return }
player.prepareToPlay()
player.play()
} catch let error {
print(error.localizedDescription)
}
}
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.
}
}
您需要将 AVPlayer
的声明移动到 class 级别。 AVPlayer
在方法中声明时无法播放声音。
class ViewController: UIViewController {
var player: AVAudioPlayer? // <-- notice here
@IBAction func hornButtonPressed(_ sender: Any) {
playSound()
hornLabel.text = "Toet!!!"
}
@IBOutlet weak var hornLabel: UILabel!
func playSound(){
let sound = Bundle.main.url(forResource: "Horn", withExtension: "mp3")
do {
player = try AVAudioPlayer(contentsOf: sound!)
guard let player = player else { return }
player.prepareToPlay()
player.play()
} catch let error {
print(error.localizedDescription)
}
}
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.
}
}