讯飞语音集成

package com.kevin.tech.voicetest;

import android.os.Bundle;
import android.os.Environment;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

import com.iflytek.cloud.ErrorCode;
import com.iflytek.cloud.InitListener;
import com.iflytek.cloud.RecognizerResult;
import com.iflytek.cloud.SpeechConstant;
import com.iflytek.cloud.SpeechError;
import com.iflytek.cloud.SpeechRecognizer;
import com.iflytek.cloud.ui.RecognizerDialog;
import com.iflytek.cloud.ui.RecognizerDialogListener;

import org.json.JSONException;
import org.json.JSONObject;

import java.util.HashMap;
import java.util.LinkedHashMap;

public class MainActivity extends AppCompatActivity implements View.OnClickListener {
    // 语音听写对象
    private SpeechRecognizer speechRecognizer;
    // 语音听写UI
    private RecognizerDialog recognizerDialog;
    // 用HashMap存储听写结果
    private HashMap<String, String> mRecoginizerResult = new LinkedHashMap<String, String>();
    private static String TAG = MainActivity.class.getSimpleName();
    // 引擎类型
    private String mEngineType = SpeechConstant.TYPE_CLOUD;
    private EditText mEtText;
    private Button mBtnBegin, mBtnCancel;
//    private SharedPreferences mSharedPreferences;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mEtText = (EditText) findViewById(R.id.tv_text);
        mBtnBegin = (Button) findViewById(R.id.btn_begin);
        mBtnCancel = (Button) findViewById(R.id.btn_cancel);
        mBtnBegin.setOnClickListener(this);
        mBtnCancel.setOnClickListener(this);
        // 初始化识别无UI识别对象
        // 使用SpeechRecognizer对象，可根据回调消息自定义界面；
        speechRecognizer = SpeechRecognizer.createRecognizer(MainActivity.this, mInitListener);
        // 初始化听写Dialog，如果只使用有UI听写功能，无需创建SpeechRecognizer
        // 使用UI听写功能，请根据sdk文件目录下的notice.txt,放置布局文件和图片资源
        recognizerDialog = new RecognizerDialog(MainActivity.this, mInitListener);
    }

    /**
     * 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) {
                showTip("初始化失败，错误码：" + code);
            } else {
                showTip("初始化成功");
            }
        }
    };

    private void showTip(String msg) {
        ToastUtils.showToast(MainActivity.this, msg);
    }

    @Override
    public void onClick(View v) {
        if (null == speechRecognizer) {
            // 创建单例失败，与 21001 错误为同样原因，参考 http://bbs.xfyun.cn/forum.php?mod=viewthread&tid=9688
            this.showTip("创建对象失败，请确认 libmsc.so 放置正确，且有调用 createUtility 进行初始化");
            return;
        }

        switch (v.getId()) {
            case R.id.btn_begin:
                mEtText.setText(null);// 清空显示内容
                mRecoginizerResult.clear();
                // 设置参数
                setParam();

                recognizerDialog.setListener(mRecognizerDialogListener);
                recognizerDialog.show();
                showTip("请开始说话...");
                break;
            case R.id.btn_cancel:
                speechRecognizer.cancel();
                showTip("取消听写");
                break;
        }
    }

    /**
     * 参数设置
     */
    public void setParam() {
        // 清空参数
        speechRecognizer.setParameter(SpeechConstant.PARAMS, null);

        // 设置听写引擎
        speechRecognizer.setParameter(SpeechConstant.ENGINE_TYPE, mEngineType);
        // 设置返回结果格式
        speechRecognizer.setParameter(SpeechConstant.RESULT_TYPE, "json");

//        String lag = mSharedPreferences.getString("iat_language_preference", "mandarin");
        String lag = "mandarin";
        if (lag.equals("en_us")) {
            // 设置语言
            speechRecognizer.setParameter(SpeechConstant.LANGUAGE, "en_us");
        } else {
            // 设置语言
            speechRecognizer.setParameter(SpeechConstant.LANGUAGE, "zh_cn");
            // 设置语言区域
            speechRecognizer.setParameter(SpeechConstant.ACCENT, lag);
        }

        // 设置语音前端点:静音超时时间，即用户多长时间不说话则当做超时处理
//        speechRecognizer.setParameter(SpeechConstant.VAD_BOS, mSharedPreferences.getString("iat_vadbos_preference", "4000"));
        speechRecognizer.setParameter(SpeechConstant.VAD_BOS, "4000");

        // 设置语音后端点:后端点静音检测时间，即用户停止说话多长时间内即认为不再输入， 自动停止录音
//        speechRecognizer.setParameter(SpeechConstant.VAD_EOS, mSharedPreferences.getString("iat_vadeos_preference", "1000"));
        speechRecognizer.setParameter(SpeechConstant.VAD_EOS, "1000");

        // 设置标点符号,设置为"0"返回结果无标点,设置为"1"返回结果有标点
//        speechRecognizer.setParameter(SpeechConstant.ASR_PTT, mSharedPreferences.getString("iat_punc_preference", "1"));
        speechRecognizer.setParameter(SpeechConstant.ASR_PTT, "1");

        // 设置音频保存路径，保存音频格式支持pcm、wav，设置路径为sd卡请注意WRITE_EXTERNAL_STORAGE权限
        // 注：AUDIO_FORMAT参数语记需要更新版本才能生效
        speechRecognizer.setParameter(SpeechConstant.AUDIO_FORMAT, "wav");
        speechRecognizer.setParameter(SpeechConstant.ASR_AUDIO_PATH, Environment.getExternalStorageDirectory() + "/msc/iat.wav");
    }

    /**
     * 听写UI监听器
     */
    private RecognizerDialogListener mRecognizerDialogListener = new RecognizerDialogListener() {
        public void onResult(RecognizerResult results, boolean isLast) {
            printResult(results);
        }

        /**
         * 识别回调错误.
         */
        public void onError(SpeechError error) {
            showTip(error.getPlainDescription(true));
        }

    };

    private void printResult(RecognizerResult results) {
        String text = JsonParser.parseIatResult(results.getResultString());

        String sn = null;
        // 读取json结果中的sn字段
        try {
            JSONObject resultJson = new JSONObject(results.getResultString());
            sn = resultJson.optString("sn");
        } catch (JSONException e) {
            e.printStackTrace();
        }

        mRecoginizerResult.put(sn, text);

        StringBuffer resultBuffer = new StringBuffer();
        for (String key : mRecoginizerResult.keySet()) {
            resultBuffer.append(mRecoginizerResult.get(key));
        }

        mEtText.setText(resultBuffer.toString());
        mEtText.setSelection(mEtText.length());
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();

        if (null != speechRecognizer) {
            // 退出时释放连接
            speechRecognizer.cancel();
            speechRecognizer.destroy();
        }
    }
}