语言识别和聊天机器人的实现

安卓上面语音识别和聊天机器人是非常常见也是非常实用的功能，在这里主要分享一款非常著名的语言平台，科大迅飞开放平台。

首先从官网下载一个sdk的包，如下图：



我们可以新建一个安卓工程，取名Robot,将下载下来的文件中的libs中的文件拷贝到我们的项目中的libs目录下，然后写一下布局文件：

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<ListView
android:id="@+id/lv_list"
android:layout_width="wrap_content"
android:layout_height="0dp"
android:divider="@null"
android:layout_weight="1" />

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/bottom_bar"
android:gravity="center"
android:orientation="vertical" >

<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:background="@drawable/btn_selector"
android:onClick="startListen"
android:text="点击开始语音识别"
android:textColor="#000"
android:textSize="16sp" />
</LinearLayout>

</LinearLayout>

list_item.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<TextView
android:id="@+id/tv_ask"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_margin="5dp"
android:background="@drawable/asker_bubble"
android:gravity="center"
android:text="你吃饭了吗?"
android:textColor="#000"
android:textSize="16sp" />

<LinearLayout
android:id="@+id/ll_answer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@id/tv_ask"
android:layout_margin="5dp"
android:background="@drawable/answer_bubble"
android:orientation="vertical" >

<TextView
android:id="@+id/tv_answer"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:text=""
android:textColor="#000"
android:textSize="16sp" />

<ImageView
android:id="@+id/iv_pic"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/m"
android:visibility="gone" />
</LinearLayout>

</RelativeLayout>

界面效果如下：



我们可以在主界面中实现上面的功能：

// 初始化语音引擎

SpeechUtility.createUtility(this, SpeechConstant.APPID + "=54b8bca3");

/**
* 语音朗诵
*/
public void read(String text) {
SpeechSynthesizer mTts = SpeechSynthesizer
.createSynthesizer(this, null);

mTts.setParameter(SpeechConstant.VOICE_NAME, "xiaoyan");
mTts.setParameter(SpeechConstant.SPEED, "50");
mTts.setParameter(SpeechConstant.VOLUME, "80");
mTts.setParameter(SpeechConstant.ENGINE_TYPE, SpeechConstant.TYPE_CLOUD);

mTts.startSpeaking(text, null);
}

/**
* 开始语音识别
*
* @param view
*/
public void startListen(View view) {
RecognizerDialog iatDialog = new RecognizerDialog(this, null);

// 2.设置听写参数，详见《科大讯飞MSC API手册(Android)》SpeechConstant类
iatDialog.setParameter(SpeechConstant.DOMAIN, "iat");
iatDialog.setParameter(SpeechConstant.LANGUAGE, "zh_cn");
iatDialog.setParameter(SpeechConstant.ACCENT, "mandarin");

iatDialog.setListener(recognizerDialogListener);

iatDialog.show();
}

class ChatAdapter extends BaseAdapter {

@Override
public int getCount() {
return mChatList.size();
}

@Override
public ChatBean getItem(int position) {
return mChatList.get(position);
}

@Override
public long getItemId(int position) {
return position;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
holder = new ViewHolder();
convertView = View.inflate(MainActivity.this,
R.layout.list_item, null);

holder.tvAsk = (TextView) convertView.findViewById(R.id.tv_ask);
holder.tvAnswer = (TextView) convertView
.findViewById(R.id.tv_answer);
holder.llAnswer = (LinearLayout) convertView
.findViewById(R.id.ll_answer);
holder.ivPic = (ImageView) convertView
.findViewById(R.id.iv_pic);

convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}

ChatBean item = getItem(position);

if (item.isAsker) {// 是提问者
holder.tvAsk.setVisibility(View.VISIBLE);
holder.llAnswer.setVisibility(View.GONE);

holder.tvAsk.setText(item.text);
} else {
holder.tvAsk.setVisibility(View.GONE);
holder.llAnswer.setVisibility(View.VISIBLE);
holder.tvAnswer.setText(item.text);
if (item.imageId != -1) {// 有图片
holder.ivPic.setVisibility(View.VISIBLE);
holder.ivPic.setImageResource(item.imageId);
} else {
holder.ivPic.setVisibility(View.GONE);
}
}

return convertView;
}

}

static class ViewHolder {
public TextView tvAsk;
public TextView tvAnswer;
public LinearLayout llAnswer;
public ImageView ivPic;
}

/**
* 解析语音数据
*
* @param resultString
*/
protected String parseData(String resultString) {
Gson gson = new Gson();
VoiceBean bean = gson.fromJson(resultString, VoiceBean.class);
ArrayList<WSBean> ws = bean.ws;

StringBuffer sb = new StringBuffer();
for (WSBean wsBean : ws) {
String text = wsBean.cw.get(0).w;
sb.append(text);
}

return sb.toString();
}

当启动的时候是这样的


更多的功能我们可以去看开发者文档。