Android实时获得经纬度，发送给c++服务端

package com.example.admin.gpsget;

import android.Manifest;
import android.content.Context;
import android.content.pm.PackageManager;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.EditText;
import android.widget.Button;
import android.widget.Toast;
import android.view.View;

import java.io.IOException;
import java.io.PrintStream;
import java.net.Socket;
import java.net.UnknownHostException;
import java.util.Timer;
import java.util.TimerTask;

import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Message;

import static java.lang.Thread.sleep;

import java.util.Timer;
import java.util.TimerTask;

public class MainActivity extends AppCompatActivity implements Runnable
{
private LocationManager locationManager;

private final String SERVER_HOST_IP = "10.41.239.240";

/* 服务器端口 */
private final int SERVER_HOST_PORT = 9400;

private Button btnConnect;
private Button btnSend;
private EditText show;
private Socket socket;
private PrintStream output;
private Thread thread;

public void toastText(String message)
{
Toast.makeText(this, message, Toast.LENGTH_LONG).show();
}

public void handleException(Exception e, String prefix)
{
e.printStackTrace();
toastText(prefix + e.toString());
}

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);

initView();

// 获取系统LocationManager服务
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
// 从GPS获取最近的定位信息

Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);
updateView(location);

// 将location里的位置信息显示在EditText中

/* 设置每2秒获取一次GPS的定位信息 */

locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5000, 1, new LocationListener() {

@Override
public void onLocationChanged(Location location) {
// 当GPS定位信息发生改变时，更新位置
updateView(location);
}

@Override
public void onProviderDisabled(String provider) {
updateView(null);
}

@Override
public void onProviderEnabled(String provider) {
// 当GPS LocationProvider可用时，更新位置
updateView(locationManager.getLastKnownLocation(provider));

}

@Override
public void onStatusChanged(String provider, int status,
Bundle extras) {
}
});

thread=new Thread(this);
thread.start();
btnConnect.setOnClickListener(new Button.OnClickListener()
{
@Override
public void onClick(View v)
{
//      initClientSocket();
}
});

btnSend.setOnClickListener(new Button.OnClickListener() {
@Override
public void onClick(View v) {
sendMessage(show.getText().toString());
}
});

}
private void updateView(Location location) {
if (location != null) {
StringBuffer sb = new StringBuffer();
sb.append("position: \nlat:");
sb.append(location.getLongitude());
sb.append("\nlng:");
sb.append(location.getLatitude());
sb.append("\nhight:");
sb.append(location.getAltitude());
sb.append("\nspeed:");
sb.append(location.getSpeed());
sb.append("\ndirection:");
sb.append(location.getBearing());
sb.append("\njingdu:");
sb.append(location.getAccuracy());
sb.append("\n");
show.setText(sb.toString());
} else {
// 如果传入的Location对象为空则随便显示点东西
show.setText("juygfugf");
}
}

public void initView()
{
btnConnect = (Button)findViewById(R.id.btnConnect);
btnSend = (Button)findViewById(R.id.btnSend);
show = (EditText) findViewById(R.id.editText);

btnSend.setEnabled(false);
show.setEnabled(false);
}

public void closeSocket()
{
try
{
output.close();
socket.close();
}
catch (IOException e)
{
handleException(e, "close exception: ");
}
}

private void initClientSocket()
{
try
{
/* 连接服务器 */
socket = new Socket(SERVER_HOST_IP, SERVER_HOST_PORT);

/* 获取输出流 */
output = new PrintStream(socket.getOutputStream(), true, "utf-8");

btnConnect.setEnabled(false);
btnSend.setEnabled(true);
}
catch (UnknownHostException e)
{
handleException(e, "unknown host exception: " + e.toString());
}
catch (IOException e) {
handleException(e, "io exception: " + e.toString());
}
}

private void sendMessage(String msg)
{
output.print(msg);
}

@Override
public void run() {
initClientSocket();
while (true)
{
try {
Thread.currentThread().sleep(5000);
} catch (InterruptedException e) {
e.printStackTrace();

}
sendMessage(show.getText().toString());
}

}
}

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

#include <WinSock2.h>
#include <stdio.h>
#include <Windows.h>

#pragma comment(lib,"ws2_32.lib")

int main(int argc,char *argv[])
{

short port;

port=9400;
WSADATA wsa;

if (WSAStartup(MAKEWORD(2,2),&wsa)!=0)
{
printf("socket init error");
exit(-1);
}

SOCKET serverSocket;

if((serverSocket=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==INVALID_SOCKET)
{
printf("创建套接字失败！");
exit(-1);
}

struct sockaddr_in serverAddress;
memset(&serverAddress,0,sizeof(sockaddr_in));
serverAddress.sin_family=AF_INET;
serverAddress.sin_addr.S_un.S_addr=htonl(INADDR_ANY);
serverAddress.sin_port=htons(port);

if (bind(serverSocket,(sockaddr*)&serverAddress,sizeof(serverAddress))==SOCKET_ERROR)
{
printf("socket port error:%d",port);
exit(-1);
}

if (listen(serverSocket,SOMAXCONN)==SOCKET_ERROR)
{
printf("listen error");
exit(-1);
}
printf("Server 9400 is listening......\n");
SOCKET clientSocket;
struct sockaddr_in clientAddress;

memset(&clientAddress,0,sizeof(clientAddress));
int addrlen=sizeof(clientAddress);

if ((clientSocket=accept(serverSocket,(sockaddr*)&clientAddress,&addrlen))==INVALID_SOCKET)
{
printf("link error");
exit(-1);
}

char buf[4096];

while (1)
{
int bytes=recv(clientSocket,buf,sizeof(buf),0);

/*    if ((bytes=recv(clientSocket,buf,sizeof(buf),0))==SOCKET_ERROR)
{
printf("data error");
exit(-1);
}*/

buf[bytes]='\0';
printf("Message from %s:\n %s\n",inet_ntoa(clientAddress.sin_addr),buf);
//    if(send(clientSocket,buf,bytes,0)==SOCKET_ERROR)
//    {
//        printf("发送数据失败！");
////        exit(-1);
//    }

}

WSACleanup();
exit(-1);

}