ios - 尝试按一个按钮然后按顺序或随机播放音频
<p><p>我正在尝试按一个按钮，然后音频文件一个接一个地播放。</p>
<p>下面是我的代码。我按下播放按钮，两种声音同时播放。
我试图按下播放按钮，声音开始和停止，然后另一个声音文件开始和停止。我的目标是按下一个按钮来按下 2 个声音文件。谢谢</p>
<p>我正在循环尝试，但它不起作用。</p>
<pre><code>import UIKit
import AVFoundation
class ViewController: UIViewController {
@IBOutlet weak var sliderValue: UISlider!
var player:AVAudioPlayer = AVAudioPlayer()
var player1:AVAudioPlayer = AVAudioPlayer()
@IBAction func play(_ sender: AnyObject) {
player.play()
player1.play()
}
@IBAction func pause(_ sender: AnyObject) {
player.pause()
}
@IBAction func stop(_ sender: AnyObject) {
player.stop()
player.currentTime = 0
}
@IBAction func sliderChanged(_ sender: AnyObject) {
player.volume = sliderValue.value
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
let audioPath =Bundle.main.path(forResource: "sound1", ofType: "mp3")!
let audioPath1 =Bundle.main.path(forResource: "sound2", ofType: "mp3")!
do {
try player = AVAudioPlayer(contentsOf: URL(fileURLWithPath: audioPath))
try player1 = AVAudioPlayer(contentsOf: URL(fileURLWithPath: audioPath1))
} catch{
//Process Error here
}
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
</code></pre></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>当然不能循环执行!</p>
<p>依次播放声音文件的正确方法是使用<code>AVAudioPlayerDelegate</code>。</p>
<p>在您的 ViewController 中，遵守 <code>AVAudioPlayerDelegate</code>:</p>
<pre><code>class YourViewController: UIViewController, AVAudioPlayerDelegate {
// ...
func audioPlayerDidFinishPlaying(_ player: AVAudioPlayer,
successfully flag: Bool) {
}
}
</code></pre>
<p>如您所见，我在 Controller 中添加了一个 <code>audioPlayerDidFinishPlaying</code> 方法。</p>
<p>所以你想先玩<code>player</code>，然后<code>player1</code>，对吧？</p>
<p>在<code>viewDidLoad</code>中，添加这一行:</p>
<pre><code>player.delegate = self
</code></pre>
<p>并且在我刚刚添加的方法中，写:</p>
<pre><code>player1.play()
</code></pre>
<p>其他的IBAction方法应该稍微改变一下:</p>
<pre><code>@IBAction func play(_ sender: AnyObject) {
player.play()
}
@IBAction func pause(_ sender: AnyObject) {
if player.isPlaying {
player.pause()
} else if player1.isPlaying {
player1.pause()
}
}
@IBAction func stop(_ sender: AnyObject) {
if player.isPlaying {
player.stop()
} else if player1.isPlaying {
player1.stop()
}
}
@IBAction func sliderChanged(_ sender: AnyObject) {
player.volume = sliderValue.value
player1.volume = sliderValue.value
}
</code></pre></p>
<p style="font-size: 20px;">关于ios - 尝试按一个按钮然后按顺序或随机播放音频，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/38911399/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/38911399/
</a>
</p>
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