如何在ibm watson speech to text的android sdk中使用audiofilewritter？

import com.ibm.cloud.sdk.core.http.HttpMediaType;
import com.ibm.watson.speech_to_text.v1.SpeechToText;
import com.ibm.watson.speech_to_text.v1.model.RecognizeOptions;
import com.ibm.watson.speech_to_text.v1.model.RecognizeOptions.AudioFileWithMetadata;
import com.ibm.watson.speech_to_text.v1.model.SpeechRecognitionResults;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.InputStream;

public class MySpeechToTextActivity extends AppCompatActivity {
    private SpeechToText speechToText;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_my_speech_to_text);

        // 初始化SpeechToText对象
        speechToText = new SpeechToText();

        // 设置IBM Watson Speech to Text服务的API密钥
        speechToText.setApiKey("YOUR_API_KEY");

        // 设置音频文件路径
        String audioFilePath = "path_to_your_audio_file";

        // 创建AudioFileWithMetadata对象
        AudioFileWithMetadata audioFile = new AudioFileWithMetadata();
        audioFile.setAudio(new File(audioFilePath));
        audioFile.setContentType(HttpMediaType.AUDIO_WAV);

        // 创建RecognizeOptions对象
        RecognizeOptions options = new RecognizeOptions.Builder()
                .audio(audioFile)
                .contentType(HttpMediaType.APPLICATION_JSON)
                .build();

        // 调用Speech to Text服务进行语音识别
        speechToText.recognizeUsingWebSocket(options, new BaseRecognizeCallback() {
            @Override
            public void onTranscription(SpeechRecognitionResults speechResults) {
                // 处理语音识别结果
                Log.d("SpeechToText", speechResults.toString());
            }
        });
    }
}

<uses-permission android:name="android.permission.INTERNET" />