这里只是功能实现（个人非android开发），可能有很多更好的实现方式，该功能的开发是之前看到过阿里的实时语音转文字的接口，当时就想把这个功能做到手机上，自己又是java开发，就百度了点基础的android知识做了个简单的实现。

主方法（手机端），主要任务采集声音，流形式发送到后台

package com.hht.myapplication;import android.Manifest;
import android.text.ClipboardManager;
import android.content.Context;
import android.content.pm.PackageManager;
import android.media.AudioFormat;
import android.media.AudioRecord;
import android.media.MediaRecorder;
import android.os.Bundle;
import android.os.Handler;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.text.method.ScrollingMovementMethod;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;import java.io.DataInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;/*** 语音小助手* hht*/
public class MainActivity extends AppCompatActivity {//接收转换的文字流DataInputStream dis;//音频流上传通道OutputStream ous;String serverIp = "101.201.XXX.XXX";int serverPort = 5555;private TextView realText;private TextView finalText;//音频相关AudioRecord audioRecord=null;int bufferSize=0;//最小缓冲区大小int sampleRateInHz = 16000;//采样率int channelConfig = AudioFormat.CHANNEL_IN_DEFAULT; //单声道int audioFormat = AudioFormat.ENCODING_PCM_16BIT; //量化位数private boolean isRecording = true;private Handler handler=null;private  String content ;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);realText = (TextView) findViewById(R.id.textView2);finalText = (TextView) findViewById(R.id.textView);finalText.setMovementMethod(ScrollingMovementMethod.getInstance()) ;handler = new Handler();if (ContextCompat.checkSelfPermission(this, Manifest.permission.CALL_PHONE)  != PackageManager.PERMISSION_GRANTED)  {ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.RECORD_AUDIO},1);} else {init();}}public void onClickCopy(View v) {// 从API11开始android推荐使用android.content.ClipboardManager// 为了兼容低版本我们这里使用旧版的android.text.ClipboardManager，虽然提示deprecated，但不影响使用。ClipboardManager cm = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);// 将文本内容放到系统剪贴板里。cm.setText(finalText.getText());Toast.makeText(this, "复制成功，可以发给朋友们了。", Toast.LENGTH_LONG).show();}public void init(){System.out.println("初始化录音");bufferSize = AudioRecord.getMinBufferSize(sampleRateInHz,channelConfig, audioFormat)+1000;//计算最小缓冲区try{audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC,sampleRateInHz,channelConfig, audioFormat, bufferSize);//创建AudioRecorder对象Runnable startRunnable = new Runnable(){@Overridepublic void run() {connect();new sendDataThread().start();new getDataThread().start();}};new Thread(startRunnable).start();}catch (Exception e){e.printStackTrace();}System.out.println("初始化录音成功");}public void connect(){try{Socket socket = new Socket(serverIp,serverPort);InputStream is=socket.getInputStream();ous = socket.getOutputStream();dis=new DataInputStream(is);}catch(IOException e){e.printStackTrace();}}//发送数据class sendDataThread extends Thread {public void run() {byte[] buffer = new byte[bufferSize];audioRecord.startRecording();//开始录音int r = 0;try {while (isRecording&&audioRecord.read(buffer,0,bufferSize)>0) {ous.write(buffer);ous.flush();}audioRecord.stop();//停止录音} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}//接收数据class getDataThread extends Thread {public void run() {while (true) {String msg;try {msg = dis.readUTF();if (!"status".equals(msg)&&!"".equals(msg)) {//status 为心跳检测content=msg;handler.post(runnableUi);}} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}}// 构建Runnable对象，在runnable中更新界面Runnable   runnableUi=new  Runnable(){@Overridepublic void run() {//更新界面realText.setText(content);finalText.append(content);//跳转到底部int offset=finalText.getLineCount()*finalText.getLineHeight();if(finalText.getLineCount()>15 && offset>finalText.getHeight()){finalText.scrollTo(0,offset-finalText.getHeight());}}};@Overridepublic void onRequestPermissionsResult(int requestCode, String permissions[], int[] grantResults) {switch (requestCode) {case 1: {if (grantResults.length > 0  && grantResults[0] == PackageManager.PERMISSION_GRANTED) {// 权限被用户同意，可以去放肆了。init();} else {// 权限被用户拒绝了，洗洗睡吧。}return;}}}
}

服务器端，接收流信息上传阿里获取实时转换结果，这里应该有自己的控制策略，我这里只做了实现，策略没有哦

这部分代码是接收和处理客户端请求

package com.hmkx.freezingapi.rest.jkjweb;import java.io.Closeable;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.List;import org.slf4j.Logger;
import org.slf4j.LoggerFactory;import com.hmkx.freezingapi.util.ali.RealtimeAsrDemo;/*** 语音转换服务 监听* * @author hht* @since 2018-06-12*/
public class AudioChangeServerThread extends Thread {private static Logger log = LoggerFactory.getLogger(AudioChangeServerThread.class);static int cCount = 0;//当前连接数static int maxCount = 10;//最大连接数static ServerSocket server = null;static List<DataOutputStream>socketsOut = new ArrayList<DataOutputStream>();static List<Socket>sockets = new ArrayList<Socket>();public static boolean runStatus = false;//标记状态 关闭后不再接受连接public void run(){runStatus = true;if(server==null){//语音转换服务监听try {server = new ServerSocket(5555);} catch (IOException e) {     e.printStackTrace();}while (runStatus) {//每接受一个连接，清理半关闭的连接validateSocket();if(cCount<=maxCount){try {Socket temp = server.accept();sockets.add(temp);OutputStream os=temp.getOutputStream();DataOutputStream dos=new DataOutputStream(os);InputStream ins = temp.getInputStream();RealtimeAsrDemo lun = new RealtimeAsrDemo(ins,dos);log.error("audio change start ....");new Thread(lun).start();  cCount++;} catch (IOException e) {log.error("has connected io exception");}log.error("has connected "+cCount);}}}}/*** 清楚已经断开的连接* @param i*/public static void removeSocket(int i){Aclose(sockets.get(i));Aclose(socketsOut.get(i));sockets.remove(i);socketsOut.remove(i);cCount--;}/*** 清楚已经断开的连接* @param i*/public void validateSocket(){for(int i=0;i<socketsOut.size();i++){try {DataOutputStream temp = socketsOut.get(i);temp.writeUTF("status");temp.flush();} catch (Exception e) {removeSocket(i);}}}/*** 连接关闭方法* @param o*/public static  void Aclose(Object...o){for(int i=0;i<o.length;i++){if(o[i] instanceof Closeable){try {Closeable c = (Closeable)o[i];c.close();} catch (IOException e) {e.printStackTrace();}}if(o[i] instanceof ServerSocket){try {ServerSocket c = (ServerSocket)o[i];c.close();} catch (IOException e) {e.printStackTrace();}}if(o[i] instanceof Socket){try {Socket c = (Socket)o[i];c.close();} catch (IOException e) {e.printStackTrace();}}}}}

下面这部分代码是处理流和阿里云服务接口的交互，用到阿里的包这个自行引入，（最近科大讯飞也提供了类似的接口，貌似效果更好）可以替换这部分逻辑就可以

package com.hmkx.freezingapi.util.ali;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.io.StringWriter;import org.slf4j.Logger;
import org.slf4j.LoggerFactory;import com.alibaba.fastjson.JSON;
import com.alibaba.idst.nls.realtime.NlsClient;
import com.alibaba.idst.nls.realtime.NlsFuture;
import com.alibaba.idst.nls.realtime.event.NlsEvent;
import com.alibaba.idst.nls.realtime.event.NlsListener;
import com.alibaba.idst.nls.realtime.protocol.NlsRequest;
import com.alibaba.idst.nls.realtime.protocol.NlsResponse;
import com.hmkx.freezingapi.rest.jkjweb.AudioChangeServerThread;/*** 语音实时转文字工具类* * @author hht**/
public class RealtimeAsrDemo implements NlsListener,Runnable{protected NlsClient client = new NlsClient();protected static final String asrSC = "pcm";static Logger logger = LoggerFactory.getLogger(RealtimeAsrDemo.class);public String appKey = "XXX";protected String ak_id = "XXX";protected String ak_secret = "XXX";private InputStream fis = null;private DataOutputStream dos = null;public RealtimeAsrDemo(InputStream fis, DataOutputStream dos) {this.fis = fis;this.dos = dos;}public void shutDown() {logger.error("close NLS client manually!");client.close();logger.error("demo done");}public void init() {logger.error("init Nls client...");client.init();}public void process() {logger.error("open audio file...");if (fis != null) {logger.error("create NLS future");process(fis);logger.error("calling NLS service end");}}public void process(InputStream ins) {try {NlsRequest req = buildRequest();NlsFuture future = client.createNlsFuture(req, this);logger.error("call NLS service");byte[] b = new byte[8000];int len = 0;while (AudioChangeServerThread.runStatus && (len = ins.read(b)) > 0 ) {future.sendVoice(b, 0, len);}logger.error("send finish signal!");future.sendFinishSignal();logger.error("main thread enter waiting .");future.await(100000);} catch (Exception e) {StringWriter sw = new StringWriter();e.printStackTrace(new PrintWriter(sw));logger.error(sw.toString());}}protected NlsRequest buildRequest() {NlsRequest req = new NlsRequest();req.setAppkey(appKey);req.setFormat(asrSC);req.setResponseMode("streaming");req.setSampleRate(16000);// 用户根据[热词文档](~~49179~~) 设置自定义热词。// 通过设置VocabularyId调用热词。// req.setVocabularyId("");// 设置关键词库ID 使用时请修改为自定义的词库ID// req.setKeyWordListId("c1391f1c1f1b4002936893c6d97592f3");// the id and the id secretreq.authorize(ak_id, ak_secret);return req;}@Overridepublic void onMessageReceived(NlsEvent e) {NlsResponse response = e.getResponse();response.getFinish();if (response.result != null) {logger.error(response.getResult().toString());if(response.getResult().getStatus_code()==0&&!"".equals(response.getText())){String content = response.getText();logger.error(content);try {dos.writeUTF(content);dos.flush();} catch (IOException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}}} else {logger.error(JSON.toJSONString(response));}}@Overridepublic void onOperationFailed(NlsEvent e) {logger.error("status code is {}, on operation failed: {}"+ e.getResponse().getStatusCode()+e.getErrorMessage());}@Overridepublic void onChannelClosed(NlsEvent e) {logger.error("on websocket closed.");}@Overridepublic void run() {init();process();shutDown();}}

这样就可以了，先启动服务端，然后启动app就可以实现语音是说转文字了哦

补充代码

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:id="@+id/activity_main"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"tools:context="com.hht.myapplication.MainActivity"><TextViewandroid:text=""android:layout_width="wrap_content"android:layout_height="wrap_content"android:id="@+id/textView2"android:maxLines="5"android:layout_alignParentTop="true"android:layout_alignParentStart="true" /><TextViewandroid:text=""android:layout_width="wrap_content"android:layout_height="wrap_content"android:textIsSelectable="true"android:focusable="true"android:layout_centerVertical="true"android:layout_alignParentStart="true"android:scrollbars="vertical"android:maxLines="15"android:fadeScrollbars="false"android:id="@+id/textView" /><Buttonandroid:layout_width="fill_parent"android:layout_height="wrap_content"android:onClick="onClickCopy"android:text="复制上面的文本内容"android:id="@+id/button"android:layout_marginBottom="12dp"android:layout_alignParentBottom="true"android:layout_alignParentEnd="true"android:layout_marginEnd="7dp" /></RelativeLayout>