将 Gps 作为后台服务运行并将坐标发送到 Web 服务器 (PHP) [英] Run Gps as background service and send coordinates to web server (PHP)

问题描述

我知道有很多关于这个问题的问题，我已经经历了几天的所有问题，但找不到合理的答案.我是 android 和 php 的新手，所以我不知道事情是如何完成的.

所以基本上首先我想知道如何在后台运行 gps 作为服务，例如在安装应用程序时它会启动并定期将坐标发送到 Web 服务器?

解决方案

只需创建一个一直在后台运行的服务.

例如:-

AndroidLocationServices

公共类 AndroidLocationServices 扩展服务 {唤醒锁唤醒锁；私人位置管理器位置管理器；公共 AndroidLocationServices() {//TODO 自动生成的构造函数存根}@覆盖公共 IBinder onBind(Intent arg0) {//TODO 自动生成的方法存根返回空值；}@覆盖公共无效 onCreate() {//TODO 自动生成的方法存根超级.onCreate();PowerManager pm = (PowerManager) getSystemService(this.POWER_SERVICE);wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "DoNotSleep");//Toast.makeText(getApplicationContext(), "服务创建",//Toast.LENGTH_SHORT).show();Log.e("Google", "服务创建");}@覆盖@已弃用公共无效onStart(意图意图，int startId){//TODO 自动生成的方法存根super.onStart(intent, startId);Log.e("谷歌", "服务启动");locationManager = (LocationManager) getApplicationContext().getSystemService(Context.LOCATION_SERVICE);locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER，5000, 5, 监听器)；}私有 LocationListener 监听器 = new LocationListener() {@覆盖公共无效onLocationChanged(位置位置){//TODO 自动生成的方法存根Log.e("谷歌", "位置改变");如果(位置 == 空)返回;if (isConnectingToInternet(getApplicationContext())) {JSONArray jsonArray = new JSONArray();JSONObject jsonObject = 新 JSONObject();尝试 {Log.e("纬度", location.getLatitude() + "");Log.e("经度", location.getLongitude() + "");jsonObject.put("纬度", location.getLatitude());jsonObject.put("经度", location.getLongitude());jsonArray.put(jsonObject);Log.e("请求", jsonArray.toString());新 LocationWebService().execute(新字符串 [] {常量.TRACK_URL, jsonArray.toString() });} 捕捉(异常 e){//TODO 自动生成的 catch 块e.printStackTrace();}}}@覆盖公共无效onProviderDisabled(字符串提供者){//TODO 自动生成的方法存根}@覆盖公共无效onProviderEnabled(字符串提供者){//TODO 自动生成的方法存根}@覆盖public void onStatusChanged(String provider, int status, Bundle extras) {//TODO 自动生成的方法存根}};@覆盖公共无效 onDestroy() {//TODO 自动生成的方法存根super.onDestroy();wakeLock.release();}公共静态布尔isConnectingToInternet(上下文_context){ConnectivityManager 连接性 = (ConnectivityManager) _context.getSystemService(Context.CONNECTIVITY_SERVICE);如果(连接！= null){NetworkInfo[] info = 连接性.getAllNetworkInfo();如果(信息！= null)for (int i = 0; i < info.length; i++)if (info[i].getState() == NetworkInfo.State.CONNECTED) {返回真；}}返回假；}}

LocationWebService

public class LocationWebService extends AsyncTask{公共位置网络服务(){//TODO 自动生成的构造函数存根}@覆盖受保护的布尔doInBackground(字符串... arg0){ArrayList<NameValuePair>nameValuePairs = new ArrayList();nameValuePairs.add(new BasicNameValuePair("位置", arg0[1]));HttpClient httpclient = new DefaultHttpClient();HttpPost httppost = 新 HttpPost(arg0[0]);HttpParams httpParameters = new BasicHttpParams();httpclient = new DefaultHttpClient(httpParameters);尝试 {httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));HttpResponse 响应；响应 = httpclient.execute(httppost);StatusLine statusLine = response.getStatusLine();if (statusLine.getStatusCode() == HttpStatus.SC_OK) {Log.e("Google", "服务器响应正常");} 别的 {response.getEntity().getContent().close();抛出新的 IOException(statusLine.getReasonPhrase());}} 捕捉(异常 e){e.printStackTrace();}返回空值；}}

您可以在这个 github 项目 androidbackgroundgps 中找到一个带有 Android 应用程序和相应 WebFiles 的示例项目p>

I know there are many questions that have been asked regarding this and i have been going through all that from couple of days but could'nt find a reasonable answer. i am newbie to android and php so i have no idea how things get done.

so basically first i want to know how to run gps as a service in background like when the application is installed it starts and periodically send the coordinates to web server?

解决方案

Just create a service that runs in the background all the time.

For Example:-

AndroidLocationServices

public class AndroidLocationServices extends Service {

WakeLock wakeLock;

private LocationManager locationManager;

public AndroidLocationServices() {
    // TODO Auto-generated constructor stub
}

@Override
public IBinder onBind(Intent arg0) {
    // TODO Auto-generated method stub
    return null;
}

@Override
public void onCreate() {
    // TODO Auto-generated method stub
    super.onCreate();

    PowerManager pm = (PowerManager) getSystemService(this.POWER_SERVICE);

    wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "DoNotSleep");

    // Toast.makeText(getApplicationContext(), "Service Created",
    // Toast.LENGTH_SHORT).show();

    Log.e("Google", "Service Created");

}

@Override
@Deprecated
public void onStart(Intent intent, int startId) {
    // TODO Auto-generated method stub
    super.onStart(intent, startId);

    Log.e("Google", "Service Started");

    locationManager = (LocationManager) getApplicationContext()
            .getSystemService(Context.LOCATION_SERVICE);

    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,
            5000, 5, listener);

}

private LocationListener listener = new LocationListener() {

    @Override
    public void onLocationChanged(Location location) {
        // TODO Auto-generated method stub

        Log.e("Google", "Location Changed");

        if (location == null)
            return;

        if (isConnectingToInternet(getApplicationContext())) {
            JSONArray jsonArray = new JSONArray();
            JSONObject jsonObject = new JSONObject();

            try {
                Log.e("latitude", location.getLatitude() + "");
                Log.e("longitude", location.getLongitude() + "");

                jsonObject.put("latitude", location.getLatitude());
                jsonObject.put("longitude", location.getLongitude());

                jsonArray.put(jsonObject);

                Log.e("request", jsonArray.toString());

                new LocationWebService().execute(new String[] {
                        Constants.TRACK_URL, jsonArray.toString() });
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

        }

    }

    @Override
    public void onProviderDisabled(String provider) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onProviderEnabled(String provider) {
        // TODO Auto-generated method stub

    }

    @Override
    public void onStatusChanged(String provider, int status, Bundle extras) {
        // TODO Auto-generated method stub

    }
};

@Override
public void onDestroy() {
    // TODO Auto-generated method stub
    super.onDestroy();

    wakeLock.release();

}

public static boolean isConnectingToInternet(Context _context) {
    ConnectivityManager connectivity = (ConnectivityManager) _context
            .getSystemService(Context.CONNECTIVITY_SERVICE);
    if (connectivity != null) {
        NetworkInfo[] info = connectivity.getAllNetworkInfo();
        if (info != null)
            for (int i = 0; i < info.length; i++)
                if (info[i].getState() == NetworkInfo.State.CONNECTED) {
                    return true;
                }

    }
    return false;
}

}

LocationWebService

public class LocationWebService extends AsyncTask<String, String, Boolean> {

public LocationWebService() {
    // TODO Auto-generated constructor stub
}

@Override
protected Boolean doInBackground(String... arg0) {

    ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>();
    nameValuePairs.add(new BasicNameValuePair("location", arg0[1]));

    HttpClient httpclient = new DefaultHttpClient();
    HttpPost httppost = new HttpPost(arg0[0]);
    HttpParams httpParameters = new BasicHttpParams();

    httpclient = new DefaultHttpClient(httpParameters);

    try {
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

        HttpResponse response;
        response = httpclient.execute(httppost);
        StatusLine statusLine = response.getStatusLine();
        if (statusLine.getStatusCode() == HttpStatus.SC_OK) {

            Log.e("Google", "Server Responded OK");

        } else {

            response.getEntity().getContent().close();
            throw new IOException(statusLine.getReasonPhrase());
        }
    } catch (Exception e) {
        e.printStackTrace();
    }

    return null;
}
}

You can find a sample project with Android App and corresponding WebFiles within this github project androidbackgroundgps

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