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Android 将Gps作为后台服务运行，并将接收到的当前位置数据与Sqlite中的值进行比较？

android

Android 将Gps作为后台服务运行，并将接收到的当前位置数据与Sqlite中的值进行比较？,android,android-service,android-sqlite,android-background,android-gps,Android,Android Service,Android Sqlite,Android Background,Android Gps,我知道有很多关于这方面的问题被问到了，我已经经历了几天，但找不到一个合理的答案。我是android的新手，所以我不知道怎么做 基本上，我想知道如何在后台运行GPS作为一项服务，比如安装应用程序启动时，以及如何将从GPS后台服务接收到的数据与SQLite数据库中的数据进行比较。您可以提供上述服务，该服务从GPS和网络提供商处获取位置，并在后台插入数据库 package com.example.alireza.locationtracker; import android.Manifest; imp

我知道有很多关于这方面的问题被问到了，我已经经历了几天，但找不到一个合理的答案。我是android的新手，所以我不知道怎么做

基本上，我想知道如何在后台运行GPS作为一项服务，比如安装应用程序启动时，以及如何将从GPS后台服务接收到的数据与SQLite数据库中的数据进行比较。

您可以提供上述服务，该服务从GPS和网络提供商处获取位置，并在后台插入数据库

package com.example.alireza.locationtracker;
import android.Manifest;
import android.app.Service;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.os.IBinder;
import android.util.Log;

import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;

import java.util.Hashtable;
import java.util.Map;


public class LocationTracker extends Service {

public static LocationListener gpsloclistener;
public static LocationListener netlistener;
public static LocationManager mLocationManager;
public static Location gpsLOc;
public static Location netLOc;
private static Location gpslocation;
private static Location netlocation;
public static boolean isGPSEnabled;
public static boolean isNetworkEnabled;


@Override
public void onCreate() {
    super.onCreate();
    gpsloclistener = new gpsloclistener();
    netlistener = new netlistener();
    getLocation();
   // myfunc();

}

@Override
public IBinder onBind(Intent intent) {

    return null;
}


public void getLocation() {
    try
    {
        mLocationManager = (LocationManager) this.getSystemService(LOCATION_SERVICE);
        isGPSEnabled = mLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
        isNetworkEnabled = mLocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
        if (isGPSEnabled || isNetworkEnabled)
        {
            if (isGPSEnabled)
            {
                mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,180000,0,gpsloclistener);
            }
            if (isNetworkEnabled)
            {
                mLocationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 10000, 0, netlistener);//aslan bar roye network nemishe mahdodiyat gozasht
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

public class gpsloclistener implements LocationListener {
    @Override
    public void onLocationChanged(final Location location) {
        if (location.getAccuracy() < 20) {
                G.database.execSQL("INSERT INTO Gps_Location (Gps_lat,Gps_long,Gps_speed,Gps_time,Gps_bearing,Gps_alt,Gps_acur) VALUES ('" + location.getLatitude() + "','" + location.getLongitude() + "','" + location.getSpeed() + "','" + System.currentTimeMillis() + "','" + location.getBearing() + "','" + location.getAltitude() + "','" + location.getAccuracy() + "')");


    }

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

    }

    @Override
    public void onProviderEnabled(String provider) {
        getLocation();
    }

    @Override
    public void onProviderDisabled(String provider) {

    }
}

private class netlistener implements LocationListener {
    @Override
    public void onLocationChanged(final Location location) {
            G.database.execSQL("INSERT INTO Net_Location (Net_lat,Net_long,Net_speed,Net_time,Net_bearing,Net_alt,Net_acur) VALUES ('" + location.getLatitude() + "','" + location.getLongitude() + "','" + location.getSpeed() + "','" + System.currentTimeMillis() + "','" + location.getBearing() + "','" + location.getAltitude() + "','" + location.getAccuracy() + "')");

    }

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

    }

    @Override
    public void onProviderEnabled(String provider) {
        getLocation();
    }

    @Override
    public void onProviderDisabled(String provider) {

    }
}
和SQLLite位置相比，这个有趣的计算点到点之间的距离

    public static double distFrom(double lat1, double lng1, double lat2, double lng2) {
    double earthRadius = 3958.75;
    double dLat = Math.toRadians(lat2 - lat1);
    double dLng = Math.toRadians(lng2 - lng1);
    double a = Math.sin(dLat / 2) * Math.sin(dLat / 2) +
            Math.cos(Math.toRadians(lat1)) * Math.cos(Math.toRadians(lat2)) *
                    Math.sin(dLng / 2) * Math.sin(dLng / 2);
    double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
    double dist = earthRadius * c;

    int meterConversion = 1609;
    double v = dist * meterConversion;
    return v;
}
最后定义要显示的服务

  <service android:name=".LocationTracker"/>
您可以像上面这样提供服务，该服务从GPS和网络提供商处获取位置，并在后台插入数据库

package com.example.alireza.locationtracker;
import android.Manifest;
import android.app.Service;
import android.content.Intent;
import android.location.Location;
import android.location.LocationListener;
import android.location.LocationManager;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.os.IBinder;
import android.util.Log;

import com.android.volley.AuthFailureError;
import com.android.volley.Request;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.StringRequest;
import com.android.volley.toolbox.Volley;

import java.util.Hashtable;
import java.util.Map;


public class LocationTracker extends Service {

public static LocationListener gpsloclistener;
public static LocationListener netlistener;
public static LocationManager mLocationManager;
public static Location gpsLOc;
public static Location netLOc;
private static Location gpslocation;
private static Location netlocation;
public static boolean isGPSEnabled;
public static boolean isNetworkEnabled;


@Override
public void onCreate() {
    super.onCreate();
    gpsloclistener = new gpsloclistener();
    netlistener = new netlistener();
    getLocation();
   // myfunc();

}

@Override
public IBinder onBind(Intent intent) {

    return null;
}


public void getLocation() {
    try
    {
        mLocationManager = (LocationManager) this.getSystemService(LOCATION_SERVICE);
        isGPSEnabled = mLocationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);
        isNetworkEnabled = mLocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);
        if (isGPSEnabled || isNetworkEnabled)
        {
            if (isGPSEnabled)
            {
                mLocationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,180000,0,gpsloclistener);
            }
            if (isNetworkEnabled)
            {
                mLocationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 10000, 0, netlistener);//aslan bar roye network nemishe mahdodiyat gozasht
            }
        }
    } catch (Exception e) {
        e.printStackTrace();
    }
}

public class gpsloclistener implements LocationListener {
    @Override
    public void onLocationChanged(final Location location) {
        if (location.getAccuracy() < 20) {
                G.database.execSQL("INSERT INTO Gps_Location (Gps_lat,Gps_long,Gps_speed,Gps_time,Gps_bearing,Gps_alt,Gps_acur) VALUES ('" + location.getLatitude() + "','" + location.getLongitude() + "','" + location.getSpeed() + "','" + System.currentTimeMillis() + "','" + location.getBearing() + "','" + location.getAltitude() + "','" + location.getAccuracy() + "')");


    }

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

    }

    @Override
    public void onProviderEnabled(String provider) {
        getLocation();
    }

    @Override
    public void onProviderDisabled(String provider) {

    }
}

private class netlistener implements LocationListener {
    @Override
    public void onLocationChanged(final Location location) {
            G.database.execSQL("INSERT INTO Net_Location (Net_lat,Net_long,Net_speed,Net_time,Net_bearing,Net_alt,Net_acur) VALUES ('" + location.getLatitude() + "','" + location.getLongitude() + "','" + location.getSpeed() + "','" + System.currentTimeMillis() + "','" + location.getBearing() + "','" + location.getAltitude() + "','" + location.getAccuracy() + "')");

    }

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

    }

    @Override
    public void onProviderEnabled(String provider) {
        getLocation();
    }

    @Override
    public void onProviderDisabled(String provider) {

    }
}
和SQLLite位置相比，这个有趣的计算点到点之间的距离

    public static double distFrom(double lat1, double lng1, double lat2, double lng2) {
    double earthRadius = 3958.75;
    double dLat = Math.toRadians(lat2 - lat1);
    double dLng = Math.toRadians(lng2 - lng1);
    double a = Math.sin(dLat / 2) * Math.sin(dLat / 2) +
            Math.cos(Math.toRadians(lat1)) * Math.cos(Math.toRadians(lat2)) *
                    Math.sin(dLng / 2) * Math.sin(dLng / 2);
    double c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1 - a));
    double dist = earthRadius * c;

    int meterConversion = 1609;
    double v = dist * meterConversion;
    return v;
}
最后定义要显示的服务

  <service android:name=".LocationTracker"/>
关于安装时在后台运行的问题的第一部分您可能希望将问题分解为较小的步骤并显示您已尝试过的内容。关于安装时在后台运行的问题的第一部分您可能希望将问题分解为较小的步骤并显示您已尝试过的内容。