Android setOnCompletionListener方法为'；我的媒体播放器中没有被调用

我正在使用kotlin开发一个音乐播放器应用程序。我在我的main活动中定义了一个mediaPlayer对象，并在歌曲播放片段中使用它。 我遇到的问题是，下一首歌会自动播放。 我试图找出问题所在，发现我的onCompletionListener没有工作，或者说没有被调用。 我自己无法解决问题，因此正在寻找任何解决方案或任何其他方式来自动更改我的歌曲

    override fun onActivityCreated(savedInstanceState: Bundle?) {
    super.onActivityCreated(savedInstanceState)
    CurrentSongHelper.isPlaying=true
    CurrentSongHelper.isShuffle= false
    CurrentSongHelper.isLoop = false
    var path: String ?= null
    var _songArtist: String ?= null
    var _songTitle: String ?= null
    var songId: Long = 0
    try {
        path = arguments?.getString("path")
        _songArtist = arguments?.getString("SongArtist")
        _songTitle = arguments?.getString("SongTitle")
        songId = arguments?.getInt("SongId")!!.toLong()
        currentPosition = arguments!!.getInt("SongPosition")
        fetchSongs = arguments?.getParcelableArrayList("SongData")

        CurrentSongHelper.songPath=path
        CurrentSongHelper.songArtist= _songArtist
        CurrentSongHelper.songTitle= _songTitle
        CurrentSongHelper.songId= songId
        CurrentSongHelper.currentPosition= currentPosition

        updateTextViews(CurrentSongHelper?.songTitle as String, CurrentSongHelper?.songArtist as String)
    }catch (e: Exception){
        e.printStackTrace()
    }
    //processInformation(mediaPlayer as MediaPlayer)
    mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC)
    try {
        mediaPlayer.setDataSource(myActivity as Context, Uri.parse(path))
        mediaPlayer.prepare()
        mediaPlayer.start()
    }catch (e: Exception){
        e.printStackTrace()
    }
    processInformation(mediaPlayer)
    if(CurrentSongHelper.isPlaying ){
        playPauseImageButton?.setBackgroundResource(R.drawable.pause_icon)
    }else{
        playPauseImageButton?.setBackgroundResource(R.drawable.play_icon )
    }

    mediaPlayer.setOnCompletionListener {
        Toast.makeText(context, "Changing Song", Toast.LENGTH_LONG).show()
        onSongComplete()
    }
    clickHandler()
    audioVisualization?.linkTo(mediaPlayer)
}

onSongComplete（）函数用于更改我的歌曲。 祝酒词“改变歌曲”并没有闪现，因此我认为无论问题是什么，它都会导致我的听众无法被调用

有什么建议吗？

替换

     videoView.setVideoURI(Uri.parse("android.resource://" + getPackageName() + "/" + R.raw.splash3));
        videoView.requestFocus();
        videoView.start();
        videoView.setOnCompletionListener(mp -> {
           //here code will come and it works.
        });

mediaPlayer.setOnCompletionListener {
        Toast.makeText(context, "Changing Song", Toast.LENGTH_LONG).show()
        onSongComplete()
    }

与

---

在mediaplayer.start（）之后调用完成侦听器代码

---

我建议不要捕捉泛型异常，因为您永远不知道自己处于什么状态。仅在需要时捕获特定异常并正确处理它们。这将使调试更容易。

mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
            @Override
            public void onCompletion(MediaPlayer mp) {
                Toast.makeText(context, "Changing Song", Toast.LENGTH_LONG).show()
        onSongComplete()
            }
        });

mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC)
try {
    mediaPlayer.setDataSource(myActivity as Context, Uri.parse(path))
    mediaPlayer.prepare()
    mediaPlayer.start()

 mediaPlayer.setOnCompletionListener {
    Toast.makeText(context, "Changing Song", Toast.LENGTH_LONG).show()
    onSongComplete()
}

}catch (e: Exception){
    e.printStackTrace()
}