Google API SpeechClient.recognize永不返回

Question

以下代码可用于JAVA：

try (SpeechClient speech = SpeechClient.create()) {
  Path path = Paths.get(fileName);
  byte[] data = Files.readAllBytes(path);
  ByteString audioBytes = ByteString.copyFrom(data);

  // Configure request with local raw PCM audio
  RecognitionConfig config =
      RecognitionConfig.newBuilder()
          .setEncoding(AudioEncoding.LINEAR16)
          .setLanguageCode("en-US")
          .setSampleRateHertz(16000)
          .setEnableWordTimeOffsets(true)
          .build();
  RecognitionAudio audio = RecognitionAudio.newBuilder().setContent(audioBytes).build();

  // Use blocking call to get audio transcript
  RecognizeResponse response = speech.recognize(config, audio);
  List<SpeechRecognitionResult> results = response.getResultsList();

  for (SpeechRecognitionResult result : results) {
   ......
}

但是当我尝试在Android上使用时，recoginze调用再也不会返回。所有依赖关系都可以，没有冲突，没有错误。

在Android中，我这样做：

FixedCredentialsProvider credentialsProvider = FixedCredentialsProvider.create(credential);

        SpeechSettings speechSettings = SpeechSettings.newBuilder()
                .setCredentialsProvider(credentialsProvider).build();

        mApi = SpeechClient.create(speechSettings); byte[] content = this.readAllbytesFrom(fileName);

    RecognitionAudio recognitionAudio =
            RecognitionAudio.newBuilder().setContent(ByteString.copyFrom(content)).build();

    RecognitionConfig config =
            RecognitionConfig.newBuilder()
                    .setEncoding(RecognitionConfig.AudioEncoding.OGG_OPUS)
                    .setSampleRateHertz(SpeechConfiguration.SAMPLE_RATE)
                    .setLanguageCode(getDefaultLanguageCode())                       
                    .build();


    // Perform the transcription request
    RecognizeResponse response = mApi.recognize(config, recognitionAudio);

没有错误，没有回应。我已经尝试了异步调用，但仍然无法正常工作

OperationFuture<LongRunningRecognizeResponse, LongRunningRecognizeMetadata> response =
    mApi.longRunningRecognizeAsync(config, recognitionAudio);

    while (!response.isDone()) {
        System.out.println("Waiting for response...");
        try {
            Thread.sleep(1000);
        } catch (InterruptedException e) {
            e.printStackTrace();
        }
    }