Android即時獲得經緯度，發送給c++服務端

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Android 用戶端：

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";    /* 伺服器連接埠 */    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();        // 擷取系統LocationManager服務        locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);        // 從GPS擷取最近的定位資訊        Location location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER);        updateView(location);        // 將location裡的位置資訊顯示在EditText中        /* 設定每2秒擷取一次GPS的定位資訊 */        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 5000, 1, new LocationListener() {            @Override            public void onLocationChanged(Location location) {                // 當GPS定位資訊發生改變時，更新位置                updateView(location);            }            @Override            public void onProviderDisabled(String provider) {                updateView(null);            }            @Override            public void onProviderEnabled(String provider) {                // 當GPS LocationProvider可用時，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 {            // 如果傳入的Location對象為空白則隨便顯示點東西            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        {      /* 串連伺服器 */            socket = new Socket(SERVER_HOST_IP, SERVER_HOST_PORT);      /* 擷取輸出資料流 */            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());        }    }}

AndroidManifest.xml添加：

<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" />

介面如下：

 

c++服務端：

#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("建立通訊端失敗！");        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("發送資料失敗！");    ////        exit(-1);    //    }    }    WSACleanup();    exit(-1);}

Android即時獲得經緯度，發送給c++服務端