SWIFT中的audioPlayerDidFinishPlaying函数 [英] audioPlayerDidFinishPlaying function in SWIFT

问题描述

我正在使用AVFoundation框架快速编写一个简单的播放器.除了我的播放器不断重复播放同一首歌曲外，其他所有内容似乎都正常运行.我的播放列表中只有一首歌，所以这很有意义.我要尝试执行的操作是检查 audioPlayerDidFinishPlaying 标志以确保已完成播放，然后将其停止.我不确定如何在这里实现调用以获取标志的代码.

I am writing a simple player in swift using the AVFoundation framework. Everything seems to be working except my player keeps playing the same song over and over again. I only have one song in my play list so this makes sense. what I am trying to do is check the audioPlayerDidFinishPlaying flag to make sure it is done playing and then I will make it stop. I am not sure how to implement the call to get the flag here is my code.

    mp3Player?.play()
    **if (mp3Player?.audioPlayerDidFinishPlaying:successfully) {**
    mp3Player?.stop()
 }

在目标c中获取标志的正确方法是:

the proper way to get the flag in objective c is:

    - (void)audioPlayerDidFinishPlaying:(AVAudioPlayer *)player successfully:(BOOL)flag
{
NSLog(@"audioPlayerDidFinishPlaying");
}

有人可以解释如何在SWIFT中实现相同的功能吗?这是我在SWIFT中的第一个程序.我试过阅读SWIFT中的void函数，但是没有运气.

Can anyone explain how to implement the same function in SWIFT? This is my first program in SWIFT. I tried reading about void functions in SWIFT but no luck.

我遇到的错误是无法将类型'AVAudioPlayer.Type'的值转换为预期的参数类型'AVAudioPlayer'

the error I am getting is Cannot convert value of type 'AVAudioPlayer.Type' to expected argument type 'AVAudioPlayer'

推荐答案

您可以交叉检查是否在开始播放音频时将numberOfLoops设置为0并将delegate设置为self或播放器所在的控制器正在玩.

You can cross check that while start playing the audio numberOfLoops set to 0 and delegate is set to self or controller where your player is playing.

   mp3Player?.numberOfLoops = 0
   mp3Player?.delegate = self

在同一类中，实现AVAudioPlayer的delegate方法，如下所示.

In the same class implement the delegate method of AVAudioPlayer like as shown below.

func audioPlayerDidFinishPlaying(player: AVAudioPlayer!, successfully flag: Bool) {
    //You can stop the audio 
    player.stop()

} 

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