只需按一下按钮，如何在swift 2中播放m4a文件？ [英] How do I play an m4a file in swift 2 upon the touch of a button?

问题描述

当我触摸按钮时，如何播放音频文件，我无法在线查找任何内容，因为它全部快速1。

How do I play an audio file when I touch a button, nothing is working that i can find online because its all swift 1.

我想要音频代码在原始函数中。

I want the audio code in the original function.

import UIKit
import AVFoundation

class ViewController: UIViewController {
    @IBAction func original(sender: AnyObject) {        
    }
}

推荐答案

这里有一些代码可以帮助您：

Here is some code to get you going:

Swift 3

import UIKit
import AVFoundation

class ViewController: UIViewController
{
    let player = AVQueuePlayer()

    @IBAction func original(sender: AnyObject) {
        if let url = Bundle.main.url(forResource: "sample_song", withExtension: "m4a") {
            player.removeAllItems()
            player.insert(AVPlayerItem(url: url), after: nil)
            player.play()
        }
    }
}

Swift 2

import UIKit
import AVFoundation

class ViewController: UIViewController
{
    let player = AVQueuePlayer()

    @IBAction func original(sender: AnyObject) {
        if let url = NSBundle.mainBundle().URLForResource("SomeAudioFile", withExtension: "m4a") {
            player.removeAllItems()
            player.insertItem(AVPlayerItem(URL: url), afterItem: nil)
            player.play()
        }
    }
}

您没有解释如果多次按下按钮会发生什么，所以我假设你想要停止正在播放的当前项目并开始一个新项目。

You did not explain what should happen if the button is hit multiple times, so I assumed that you would want to stop the current item being played and start a new one.

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