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("
"); 
                } 

            } 
        } 

        @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; 
        } 
    } 

}