转：基于科大讯飞语音API语音识别开发详解

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"#ABNF 1.0 gb2312;

language zh-CN;

mode voice;

root $main;

$main = $place1 到$place2 ;

$place1 = 北京 | 武汉 | 南京 | 天津 | 天京 | 东京;

$place2 = 上海 | 合肥;"

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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

xmlns:tools="http://schemas.android.com/tools"

android:orientation="vertical"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:paddingBottom="@dimen/activity_vertical_margin"

android:paddingLeft="@dimen/activity_horizontal_margin"

android:paddingRight="@dimen/activity_horizontal_margin"

android:paddingTop="@dimen/activity_vertical_margin"

android:background="@drawable/color"

tools:context=".MainActivity" >

<ImageView

android:id="@+id/voice"

android:layout_width="fill_parent"

android:layout_height="wrap_content"

android:layout_marginTop="100dp"

android:src="@drawable/voice"/>

<TextView

android:id="@+id/result"

android:layout_height="wrap_content"

android:layout_marginTop="50dp"

android:layout_gravity="center_vertical"

android:layout_width="fill_parent"

android:text="提示：请说出你所在的城市"/>

</LinearLayout>

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#ABNF 1.0 gb2312;

language zh-CN;

mode voice;

root $main;

$main = $where ;

$where = 北京 | 上海 | 广州 | 深圳 | 厦门;

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package com.example.androidclient;

import java.io.InputStream;

import java.util.ArrayList;

import com.iflytek.speech.RecognizerResult;

import com.iflytek.speech.SpeechError;

import com.iflytek.speech.SpeechListener;

import com.iflytek.speech.SpeechUser;

import com.iflytek.ui.RecognizerDialog;

import com.iflytek.ui.RecognizerDialogListener;

import android.os.Bundle;

import android.app.Activity;

import android.content.SharedPreferences;

import android.view.Menu;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.ImageView;

import android.widget.TextView;

import android.widget.Toast;

public class MainActivity extends Activity{

//组件

private ImageView voice = null;

private TextView result = null;

private Toast mToast = null;

//语音识别

private final String APP_ID = "514fb8d7";

private final static String KEY_GRAMMAR_ID = "grammar_id";

private RecognizerDialog recognizerDialog = null;

private String grammarText = null;

private String grammarID = null;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

super.setContentView(R.layout.activity_main);

this.voice = (ImageView)super.findViewById(R.id.voice);

this.result = (TextView)super.findViewById(R.id.result);

//初始化识别

mToast = Toast.makeText(this,"",Toast.LENGTH_SHORT);

mToast.setMargin(0f, 0.2f);

recognizerDialog = new RecognizerDialog(this,"appid="+APP_ID);

SpeechUser.getUser().login(this, null, null, "appid="+APP_ID, loginListener);

// 读取保存的语法ID

SharedPreferences preference = this.getSharedPreferences("abnf",MODE_PRIVATE);

grammarID =preference.getString(KEY_GRAMMAR_ID, null);

grammarText = readAbnfFile();

this.voice.setOnClickListener(new Voice());

}

private class Voice implements OnClickListener {

@Override

public void onClick(View v) {

MainActivity.this.voice.setImageResource(R.drawable.voicelight);

recognizerDialog.setListener(mRecoListener);

recognizerDialog.setEngine(null, "grammar_type=abnf", grammarText);

recognizerDialog.show();

}

}

//语音识别用户登录监听器

private SpeechListener loginListener = new SpeechListener()

{

@Override

public void onData(byte[] arg0) {

}

@Override

public void onEnd(SpeechError error) {

if(error != null)

{

mToast.setText("登录失败");

mToast.show();

}

else

{

mToast.setText("登录成功");

mToast.show();

}

}

@Override

public void onEvent(int arg0, Bundle arg1) {

}

};

//读取语音识别语法

private String readAbnfFile()

{

int len = 0;

byte []buf = null;

String grammar = "";

try {

InputStream in = getAssets().open("gm_continuous_digit.abnf");

len  = in.available();

buf = new byte[len];

in.read(buf, 0, len);

grammar = new String(buf,"gb2312");

} catch (Exception e1) {

e1.printStackTrace();

}

return grammar;

}

//识别结果回调

private RecognizerDialogListener mRecoListener = new RecognizerDialogListener()

{

@Override

public void onResults(ArrayList<RecognizerResult> results,boolean isLast) {

String text = "";

text = results.get(0).text;

mToast.setText("识别结果为："+text);

mToast.show();

result.setText("识别结果为："+text);

}

@Override

public void onEnd(SpeechError error) {

MainActivity.this.voice.setImageResource(R.drawable.voice);

}

};

}

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

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

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

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

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

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