我想用Swift播放一个声音。
我的代码在Swift 1.0中工作，但现在在Swift 2或更新版本中不再工作。
override func viewDidLoad() {
super.viewDidLoad()
let url:NSURL = NSBundle.mainBundle().URLForResource("soundName", withExtension: "mp3")!
do {
player = try AVAudioPlayer(contentsOfURL: url, fileTypeHint: nil)
} catch _{
return
}
bgMusic.numberOfLoops = 1
bgMusic.prepareToPlay()
if (Data.backgroundMenuPlayed == 0){
player.play()
Data.backgroundMenuPlayed = 1
}
}
当前回答
Swift 4和iOS 12测试:
import UIKit
import AVFoundation
class ViewController: UIViewController{
var player: AVAudioPlayer!
override func viewDidLoad() {
super.viewDidLoad()
}
func playTone(number: Int) {
let path = Bundle.main.path(forResource: "note\(number)", ofType : "wav")!
let url = URL(fileURLWithPath : path)
do {
player = try AVAudioPlayer(contentsOf: url)
print ("note\(number)")
player.play()
}
catch {
print (error)
}
}
@IBAction func notePressed(_ sender: UIButton) {
playTone(number: sender.tag)
}
}
其他回答
Swift 5“AVFoundation”\
简单的代码，没有错误处理，从本地路径播放音频
import AVFoundation
var audio:AVPlayer!
func stopAlarm() {
// To pause or stop audio in swift 5 audio.stop() isn't working
audio.pause()
}
func playAlarm() {
// need to declare local path as url
let url = Bundle.main.url(forResource: "Alarm", withExtension: "mp3")
// now use declared path 'url' to initialize the player
audio = AVPlayer.init(url: url!)
// after initialization play audio its just like click on play button
audio.play()
}
如果代码没有产生任何错误，但你听不到声音-创建播放器作为一个实例:
static var player: AVAudioPlayer!
对我来说，当我做这个改变时，第一个解决方案起作用了:)
Swift 4和iOS 12测试:
import UIKit
import AVFoundation
class ViewController: UIViewController{
var player: AVAudioPlayer!
override func viewDidLoad() {
super.viewDidLoad()
}
func playTone(number: Int) {
let path = Bundle.main.path(forResource: "note\(number)", ofType : "wav")!
let url = URL(fileURLWithPath : path)
do {
player = try AVAudioPlayer(contentsOf: url)
print ("note\(number)")
player.play()
}
catch {
print (error)
}
}
@IBAction func notePressed(_ sender: UIButton) {
playTone(number: sender.tag)
}
}
这是在Swift中查找和播放音频文件的基本代码。
将音频文件添加到Xcode中，并添加下面的代码。
import AVFoundation
class ViewController: UIViewController {
var audioPlayer = AVAudioPlayer() // declare globally
override func viewDidLoad() {
super.viewDidLoad()
guard let sound = Bundle.main.path(forResource: "audiofilename", ofType: "mp3") else {
print("Error getting the mp3 file from the main bundle.")
return
}
do {
audioPlayer = try AVAudioPlayer(contentsOf: URL(fileURLWithPath: sound))
} catch {
print("Audio file error.")
}
audioPlayer.play()
}
@IBAction func notePressed(_ sender: UIButton) { // Button action
audioPlayer.stop()
}
}
var soundEffect = AVAudioPlayer()
func playSound(_ buttonTag : Int){
let path = Bundle.main.path(forResource: "note\(buttonTag)", ofType : "wav")!
let url = URL(fileURLWithPath : path)
do{
soundEffect = try AVAudioPlayer(contentsOf: url)
soundEffect?.play()
// to stop the spound .stop()
}catch{
print ("file could not be loaded or other error!")
}
}
工作在swift 4最新版本。ButtonTag是界面上按钮上的一个标签。笔记在与Main.storyboard平行的文件夹中的一个文件夹中。每个音符都被命名为note1、note2等。ButtonTag给出了被点击按钮的数字1、2等，并将其作为参数传递
