Android Visualizer类抛出运行时异常

问题描述

我在演示应用程序中使用AndroidFX Visualizer类读取FFT，但是当我尝试创建该类的对象时，会引发运行时异常(java.lang.RuntimeException: Cannot initialize Visualizer engine, error: -1). Player类是我用于回放控制的自定义类，使用相同的Player类已经实现了均衡器类，并且工作正常.我需要在清单文件中添加任何权限吗?

I am using AndroidFX Visualizer class in my demo app to read FFT but when i try to create object of that class its throwing Runtime exception (java.lang.RuntimeException: Cannot initialize Visualizer engine, error: -1). Player class is my custom class for playback control and using same Player class i have implemented equalizer class and that's working fine. Do i need to add any permission in manifest file?

Player mediaPlayer = Player.GetInstance();
    mediaPlayer.LoadFile("song.mp3");
    mediaPlayer.Play();
    try{
    visual = new Visualizer(mediaPlayer.GetAudioSessionID()); // this line causing Exception
    visual.setEnabled(true);
    visual.setCaptureSize(Visualizer.getCaptureSizeRange()[1]);
    }
    catch(Exception ex)
    {
        Log.e("Visual Ex", ex.getMessage());
    }

推荐答案

那是由于我的愚蠢错误，该功能需要<uses-permission android:name="android.permission.RECORD_AUDIO"></uses-permission>权限.谢谢

That was due to my foolish mistake, that feature requires <uses-permission android:name="android.permission.RECORD_AUDIO"></uses-permission> permission. thanks

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