语音识别为文字

转载自 http://mp.blog.csdn.net/postedit/79120421

1、注册一个http://www.xfyun.cn/用户，申请SDK（免费的），主要是语音听写（就是语音转文字），http://www.xfyun.cn/services/voicedictation

2、下载SDK，注意自己的appid只能用自己的sdk，否则会创建语音识别接口失败

3、创建自己的android工程

参考我的代码 github https://github.com/HungryGoogle/LeeVoice2WordDemo

4、增加权限

5、增加一个识别的activity

import android.app.Activity;import android.os.Bundle;import android.util.Log;import android.view.MotionEvent;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;import com.google.gson.Gson;import com.google.gson.reflect.TypeToken;import com.iflytek.cloud.RecognizerListener;import com.iflytek.cloud.RecognizerResult;import com.iflytek.cloud.SpeechConstant;import com.iflytek.cloud.SpeechError;import com.iflytek.cloud.SpeechRecognizer;import com.iflytek.cloud.SpeechUtility;import java.util.List;public class Voice2Word extends Activity {    Button mButton;    TextView mResultShowTextView;    private String dictationResultStr;    private RecognizerListener mRecoListener = new RecognizerListener() {        // 听写结果回调接口(返回Json格式结果)；        // 比如：{"sn":1,"ls":false,"bg":0,"ed":0,"ws":[{"bg":0,"cw":[{"sc":0.00,"w":"我"}]},{"bg":0,"cw":[{"sc":0.00,"w":"是"}]},{"bg":0,"cw":[{"sc":0.00,"w":"万里长城"}]}]}        public void onResult(RecognizerResult results, boolean isLast) {            Log.i("leeTest", "RecognizerResult ---> " + results.getResultString());            if (!isLast) {                dictationResultStr += results.getResultString() + ",";            } else {                dictationResultStr += results.getResultString() + "]";            }            // 如果是最后一个，进行解析            if (isLast) {                // 解析Json列表字符串                Gson gson = new Gson();                List voide2WordsResultList = gson                        .fromJson(dictationResultStr,                                new TypeToken>() {                                }.getType());                String finalResult = "";                for (int i = 0; i < voide2WordsResultList.size() - 1; i++) {                    finalResult += voide2WordsResultList.get(i)                            .toString();                }                Log.i("leeTest", "last result ---> " + finalResult);                mResultShowTextView.setText(finalResult);            }        }        //会话发生错误回调接口        public void onError(SpeechError error) {            error.getPlainDescription(true); //获取错误码描述        }        @Override        public void onVolumeChanged(int i, byte[] bytes) {        }        //开始录音        public void onBeginOfSpeech() {        }        //音量值0~30        public void onVolumeChanged(int volume) {        }        //结束录音        public void onEndOfSpeech() {        }        //扩展用接口        public void onEvent(int eventType, int arg1, int arg2, Bundle obj) {        }    };    private SpeechRecognizer mIat;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_speach2_word);        SpeechUtility.createUtility(Voice2Word.this, SpeechConstant.APPID + "=5931728f");        ButtonListener b = new ButtonListener();        mButton = (Button) findViewById(R.id.button_voice_2_word);        mButton.setOnClickListener(b);        mButton.setOnTouchListener(b);        mButton.setText("按住识别语音");        mResultShowTextView = findViewById(R.id.id_show_voice_2_words_result);        // 1 创建SpeechRecognizer对象，第二个参数：本地听写时传InitListener        mIat = SpeechRecognizer.createRecognizer(Voice2Word.this, null);        // 2 设置听写参数，详见《科大讯飞MSC API手册(Android)》SpeechConstant类        mIat.setParameter(SpeechConstant.DOMAIN, "iat");        mIat.setParameter(SpeechConstant.LANGUAGE, "zh_cn");        mIat.setParameter(SpeechConstant.ACCENT, "mandarin ");    }    class ButtonListener implements OnClickListener, View.OnTouchListener {        public void onClick(View v) {            if (v.getId() == R.id.button_voice_2_word) {                Log.d("leeTest", "cansal button ---> click");            }        }        public boolean onTouch(View v, MotionEvent event) {            if (v.getId() == R.id.button_voice_2_word) {                if (event.getAction() == MotionEvent.ACTION_DOWN) {                    Log.d("leeTest", "cansal button ---> ACTION_DOWN");                    mButton.setText("录制并识别中...");                    //3.开始听写                    dictationResultStr = "[";                    mIat.startListening(mRecoListener);                }                if (event.getAction() == MotionEvent.ACTION_UP) {                    Log.d("leeTest", "cansal button ---> ACTION_UP");                    mButton.setText("按住识别语音");                    mIat.stopListening();                }            }            return false;        }    }}

6、增加结果解析类

/** * Created by Li on 2018/1/21. */import java.util.List;/** * 解析语音听写返回结果Json格式字符串的模板类（多重嵌套Json） * 语音识别结果Json数据格式（单条数据）： * {"sn":1,"ls":false,"bg":0,"ed":0,"ws":[{"bg":0,"cw":[{"sc":0.00,"w":"我"}]},{"bg":0,"cw":[{"sc":0.00,"w":"是"}]},{"bg":0,"cw":[{"sc":0.00,"w":"万里长城"}]}]} */public class Voide2WordsResult {    // 结果是json格式的，下面的都是json结果中的标签值    private String sn;    private String ls;    private String bg;    private String ed;    private List ws;    public static class Words {        private String bg;        private List cw;        public static class Cw {            private String w;            private String sc;            public String getW() {                return w;            }            public void setW(String w) {                this.w = w;            }            public String getSc() {                return sc;            }            public void setSc(String sc) {                this.sc = sc;            }            @Override            public String toString() {                return w;            }        }        public String getBg() {            return bg;        }        public void setBg(String bg) {            this.bg = bg;        }        public List getCw() {            return cw;        }        public void setCw(List cw) {            this.cw = cw;        }        @Override        public String toString() {            String result = "";            for (Cw cwTmp : cw) {                result += cwTmp.toString();            }            return result;        }    }    public String getSn() {        return sn;    }    public void setSn(String sn) {        this.sn = sn;    }    public String getLs() {        return ls;    }    public void setLs(String ls) {        this.ls = ls;    }    public String getBg() {        return bg;    }    public void setBg(String bg) {        this.bg = bg;    }    public String getEd() {        return ed;    }    public void setEd(String ed) {        this.ed = ed;    }    public List getWs() {        return ws;    }    public void setWs(List ws) {        this.ws = ws;    }    @Override    public String toString() {        String result = "";        for (Words wsTmp : ws) {            result += wsTmp.toString();        }        return result;    }}

7、对应的配置文件

<?xml version="1.0" encoding="utf-8"?>

8、copy自己的sdk和appid覆盖我的代码里面的，运行，安装后，一定要打开权限，demo没有做动态权限申请，录音等功能没有开启。

参考我的代码 github https://github.com/HungryGoogle/LeeVoice2WordDemo

备注：仅为个人开发者学习交流，如果转载或用于商业用途，后果自负。

请注明转载自 http://mp.blog.csdn.net/postedit/79120421

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