讯飞语音识别Android-Demo

import java.io.UnsupportedEncodingException; 

import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.text.TextUtils;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast; 

import com.iflytek.cloud.ErrorCode;
import com.iflytek.cloud.InitListener;
import com.iflytek.cloud.LexiconListener;
import com.iflytek.cloud.RecognizerListener;
import com.iflytek.cloud.RecognizerResult;
import com.iflytek.cloud.SpeechConstant;
import com.iflytek.cloud.SpeechError;
import com.iflytek.cloud.SpeechListener;
import com.iflytek.cloud.SpeechRecognizer;
import com.iflytek.cloud.SpeechUtility;
import com.iflytek.cloud.util.ContactManager.ContactListener;
import com.iflytek.cloud.util.UserWords; 

public class MainActivity extends Activity implements OnClickListener { 

    private static String TAG = "IatDemo";
    // 语音听写对象
    private SpeechRecognizer mIat;
    // 听写结果内容
    private EditText mResultText;
    // 用户词表下载结果
    private String mDownloadResult = ""; 

    private Toast mToast; 

    private int ret; 

    private Button startRecording; 

    private String voiceResult = ""; 

    private TextView text_result; 

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mIat = SpeechRecognizer.createRecognizer(this, mInitListener); 

        mToast = Toast.makeText(this, "", Toast.LENGTH_SHORT);
        text_result = (TextView) this.findViewById(R.id.text_result);
        startRecording = (Button) this.findViewById(R.id.start_recording);
        startRecording.setOnClickListener(this);
    } 

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    } 

    public void getVoice() {
        SpeechUtility.createUtility(MainActivity.this, "appid=540593c3");
        // 设置参数
        setParam();
        // 不显示听写对话框
        ret = mIat.startListening(recognizerListener); 

    } 

    public void setParam() { 

        mIat.setParameter(SpeechConstant.LANGUAGE, "zh_cn"); 

        // 设置语音前端点
        mIat.setParameter(SpeechConstant.VAD_BOS, "4000");
        // 设置语音后端点
        mIat.setParameter(SpeechConstant.VAD_EOS, "1000");
        // 设置标点符号
        mIat.setParameter(SpeechConstant.ASR_PTT, "1");
        // 设置音频保存路径
        mIat.setParameter(SpeechConstant.ASR_AUDIO_PATH, Environment.getExternalStorageDirectory()+"/xunfei");
    } 

    /**
     * 初始化监听器。
     */
    private InitListener mInitListener = new InitListener() { 

        @Override
        public void onInit(int code) {
            Log.d(TAG, "SpeechRecognizer init() code = " + code);
            if (code == ErrorCode.SUCCESS) {
                Toast.makeText(MainActivity.this, "init success", 0).show();
            }
        }
    }; 

    /**
     * 用户词表下载监听器。
     */
    private SpeechListener downloadlistener = new SpeechListener() { 

        @Override
        public void onData(byte[] data) {
            try {
                if (data != null && data.length > 1)
                    mDownloadResult = new String(data, "utf-8");
            } catch (UnsupportedEncodingException e) {
                e.printStackTrace();
            } 

        } 

        @Override
        public void onCompleted(SpeechError error) {
            if (error != null) { 

            } else if (TextUtils.isEmpty(mDownloadResult)) { 

            } else {
                mResultText.setText("");
                UserWords userwords = new UserWords(mDownloadResult.toString());
                if (userwords == null || userwords.getKeys() == null) { 

                    return;
                }
                for (String key : userwords.getKeys()) {
                    mResultText.append(key + ":");
                    for (String word : userwords.getWords(key)) {
                        mResultText.append(word + ",");
                    }
                    mResultText.append("\n");
                } 

            }
        } 

        @Override
        public void onEvent(int eventType, Bundle params) {
        } 

    }; 

    /**
     * 听写监听器。
     */
    private RecognizerListener recognizerListener = new RecognizerListener() { 

        @Override
        public void onBeginOfSpeech() {
            Toast.makeText(MainActivity.this, "begin speech", 0).show();
        } 

        @Override
        public void onError(SpeechError error) {
            Toast.makeText(MainActivity.this, error.getErrorDescription(), 0).show();
        } 

        @Override
        public void onEndOfSpeech() {
            Toast.makeText(MainActivity.this, "end", 0).show();
        } 

        @Override
        public void onEvent(int eventType, int arg1, int arg2, String msg) {
            Toast.makeText(MainActivity.this, "on event", 0).show();
        } 

        @Override
        public void onResult(RecognizerResult results, boolean isLast) {
            String text = JsonParser.parseIatResult(results.getResultString());
            voiceResult = voiceResult + text;
            if (isLast) {
                text_result.setText(voiceResult);
            }
        } 

        @Override
        public void onVolumeChanged(int volume) { 

        } 

    }; 

    @Override
    protected void onResume() {
        // SpeechUtility.getUtility().checkServiceInstalled();
        super.onResume();
    } 

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
        case R.id.start_recording:
            getVoice();
            break;
        }
    } 

}