使用IBM Watson將音頻文件寫入websocket Android sdk

Question

在IBM開發人員論壇中閱讀了一篇文章，意思是android sdk從mic錄音中讀取字節並將其寫入websocket。我現在試圖從內存上的音頻文件讀取字節，並將它們寫入websocket。我應該怎麼做？到目前爲止，我有：

public class AudioCaptureThread extends Thread{ 

private static final String TAG = "AudioCaptureThread"; 
private boolean mStop = false; 
private boolean mStopped = false; 
private int mSamplingRate = -1; 
private IAudioConsumer mIAudioConsumer = null; 

// the thread receives high priority because it needs to do real time audio capture 
// THREAD_PRIORITY_URGENT_AUDIO = "Standard priority of the most important audio threads" 
public AudioCaptureThread(int iSamplingRate, IAudioConsumer IAudioConsumer) { 
    android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_URGENT_AUDIO); 
    mSamplingRate = iSamplingRate; 
    mIAudioConsumer = IAudioConsumer; 
} 

// once the thread is started it runs nonstop until it is stopped from the outside 
@Override 
public void run() { 

    File path = Activity.getContext.getExternalFilesDir(null); 
    File file = new File (path, "whatstheweatherlike.wav"); 
    int length = (int) file.length(); 
    ByteArrayOutputStream bos = new ByteArrayOutputStream(); 
    byte[] b = new byte[length]; 
    FileInputStream in = null; 
    try { 
     in = new FileInputStream(file); 
    } catch (FileNotFoundException e) { 
     e.printStackTrace(); 
    } 
    try { 
     for (int readNum; (readNum = in.read(b)) != -1;) { 
      bos.write(b, 0, readNum); 
     } 
    } catch (IOException e) { 
     e.printStackTrace(); 
    } 

    byte[] bytes = bos.toByteArray(); 
    mIAudioConsumer.consume(bytes); 
} 

然而，Activity.getContext無法識別。我可以將文件轉換爲MainActivity中的字節，但是如何將它寫入websocket？我在正確的軌道上還是這不正確？如果是這樣，我該如何解決這個問題？

任何幫助表示讚賞！

Answer 1

Activity.getContext不被識別，因爲沒有提及Activity，因爲它只是一個Thread。你將不得不通過Activity，儘管如果你需要它可能會更有意義的傳遞Context。

你有正確的想法，你可以創建一個FileInputStream並使用它。您可能喜歡使用我們的MicrophoneCaptureThread作爲參考。這將是一個非常相似的情況，除非您使用FileInputStream而不是從麥克風讀取。您可以在此處查看（以及使用它的示例項目）：https://github.com/watson-developer-cloud/android-sdk/blob/master/library/src/main/java/com/ibm/watson/developer_cloud/android/library/audio/MicrophoneCaptureThread.java