完成时iOS 8 Swift音频播放执行方法 [英] iOS 8 Swift Audio Playback Execute Method On Completion

问题描述

我正在使用Swift for iOS 8播放音频文件。我需要能够知道声音何时结束。如何在声音结束时执行方法？

I am playing an audio file in Swift for iOS 8. I need to be able to know when the sound is finished. How can I have a method executed when the sound is finished?

推荐答案

这取决于你如何演奏它。查找委托方法，通知或可观察属性，其状态更改可以触发KVO通知。

It depends on how you're playing it. Look for a delegate method, a notification, or an observable property whose state change can trigger a KVO notification.

例如，如果您正在使用AVAudioPlayer，则其 delegate 通过委托方法获得通知，您可以在此处找到： https://developer.apple.com/library/ios/documentation/avfoundation/reference/AVAudioPlayerDelegateProtocolReference/index.html ＃// apple_ref / doc / uid / TP40008068

For example, if you're using an AVAudioPlayer, its delegate gets notified by a delegate method, which you can find out about here: https://developer.apple.com/library/ios/documentation/avfoundation/reference/AVAudioPlayerDelegateProtocolReference/index.html#//apple_ref/doc/uid/TP40008068

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