GPSとネットワークプロバイダの両方を使用して現在地を取得する方法

Question

私のAndroidアプリケーションでは、GPSプロバイダとネットワークプロバイダの両方を5秒間使用して位置情報を更新したいと考えています。まず、GPSプロバイダを使用したいのです（正確な結果が得られるため）。GPSプロバイダが0.0と0.0の緯度と経度を返す場合は、ネットワークプロバイダを使用したいと思いますが、両方のプロバイダ同時に。助言がありますか？

Answer 1

package loca.loca; 

import java.util.Timer; 
import java.util.TimerTask; 
import android.app.Activity; 
import android.content.Context; 
import android.location.Location; 
import android.location.LocationListener; 
import android.location.LocationManager; 
import android.os.Bundle; 
import android.widget.Toast; 


public class LocationActivity extends Activity { 

    double x,y; 

    Timer timer; 
    LocationManager lm; 
    boolean gps_enabled = false; 
    boolean network_enabled = false; 

    /** Called when the activity is first created. */ 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 


      lm = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE); 



      gps_enabled = lm.isProviderEnabled(LocationManager.GPS_PROVIDER); 
      network_enabled = lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER); 



     if (!gps_enabled && !network_enabled) { Context context = getApplicationContext(); 
      int duration = Toast.LENGTH_SHORT; 
      Toast toast = Toast.makeText(context, "nothing is enabled", duration); 
      toast.show(); 

     } 




     if (gps_enabled) 
      lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, 
        locationListenerGps); 
     if (network_enabled) 
      lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, 
        locationListenerNetwork); 
     timer=new Timer(); 
     timer.schedule(new GetLastLocation(), 20000); 

    } 

    LocationListener locationListenerGps = new LocationListener() { 
     public void onLocationChanged(Location location) { 
      timer.cancel(); 
      x =location.getLatitude(); 
      y = location.getLongitude(); 
      lm.removeUpdates(this); 
      lm.removeUpdates(locationListenerNetwork); 

      Context context = getApplicationContext(); 
      int duration = Toast.LENGTH_SHORT; 
      Toast toast = Toast.makeText(context, "gps enabled "+x + "\n" + y, duration); 
      toast.show(); 
     } 

     public void onProviderDisabled(String provider) { 
     } 

     public void onProviderEnabled(String provider) { 
     } 

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

    LocationListener locationListenerNetwork = new LocationListener() { 
     public void onLocationChanged(Location location) { 
      timer.cancel(); 
      x = location.getLatitude(); 
      y = location.getLongitude(); 
      lm.removeUpdates(this); 
      lm.removeUpdates(locationListenerGps); 

      Context context = getApplicationContext(); 
      int duration = Toast.LENGTH_SHORT; 
      Toast toast = Toast.makeText(context, "network enabled"+x + "\n" + y, duration); 
      toast.show(); 
     } 

     public void onProviderDisabled(String provider) { 
     } 

     public void onProviderEnabled(String provider) { 
     } 

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

    class GetLastLocation extends TimerTask { 
     @Override 
     public void run() { 
      lm.removeUpdates(locationListenerGps); 
      lm.removeUpdates(locationListenerNetwork); 

      Location net_loc=null, gps_loc=null; 
      if(gps_enabled) 
       gps_loc=lm.getLastKnownLocation(LocationManager.GPS_PROVIDER); 
      if(network_enabled) 
       net_loc=lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER); 

      //if there are both values use the latest one 
      if(gps_loc!=null && net_loc!=null){ 
       if(gps_loc.getTime()>net_loc.getTime()) 
       {x = gps_loc.getLatitude(); 
       y = gps_loc.getLongitude(); 
        Context context = getApplicationContext(); 
        int duration = Toast.LENGTH_SHORT; 
        Toast toast = Toast.makeText(context, "gps lastknown "+x + "\n" + y, duration); 
        toast.show(); 
       } 
       else 
       {x = net_loc.getLatitude(); 
       y = net_loc.getLongitude(); 
       Context context = getApplicationContext(); 
       int duration = Toast.LENGTH_SHORT; 
       Toast toast = Toast.makeText(context, "network lastknown "+x + "\n" + y, duration); 
       toast.show(); 

       } 

      } 

      if(gps_loc!=null){ 
        {x = gps_loc.getLatitude(); 
       y = gps_loc.getLongitude(); 
        Context context = getApplicationContext(); 
        int duration = Toast.LENGTH_SHORT; 
        Toast toast = Toast.makeText(context, "gps lastknown "+x + "\n" + y, duration); 
        toast.show(); 
        } 

      } 
      if(net_loc!=null){ 
       {x = net_loc.getLatitude(); 
       y = net_loc.getLongitude(); 
       Context context = getApplicationContext(); 
       int duration = Toast.LENGTH_SHORT; 
       Toast toast = Toast.makeText(context, "network lastknown "+x + "\n" + y, duration); 
       toast.show(); 

       } 
      } 
      Context context = getApplicationContext(); 
      int duration = Toast.LENGTH_SHORT; 
      Toast toast = Toast.makeText(context, "no last know avilable", duration); 
      toast.show(); 

} 
}} 

Answer 2

ヴェンカトCheck this

また、あなたの活動にこれらを使用するあなたの必要性に従って

Answer 3

public class MyLocation { 
    Timer timer1; 
    LocationManager lm; 
    LocationResult locationResult; 
    boolean gps_enabled=false; 
    boolean network_enabled=false;` 

    public boolean getLocation(Context context, LocationResult result) 
    { 
     //I use LocationResult callback class to pass location value from MyLocation to user code. 
     locationResult=result; 
     if(lm==null) 
      lm = (LocationManager) context.getSystemService(Context.LOCATION_SERVICE); 

     //exceptions will be thrown if provider is not permitted. 
     try{gps_enabled=lm.isProviderEnabled(LocationManager.GPS_PROVIDER);}catch(Exception ex){} 
     try{network_enabled=lm.isProviderEnabled(LocationManager.NETWORK_PROVIDER);}catch(Exception ex){} 

     //don't start listeners if no provider is enabled 
     if(!gps_enabled && !network_enabled) 
      return false; 
     try{ 
      if(gps_enabled) 
       lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListenerGps); 
      if(network_enabled) 
       lm.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListenerNetwork); 
      timer1=new Timer(); 
      timer1.schedule(new GetLastLocation(), 30000); 
     }catch(Exception x){ 
      return false; 
     } 
     return true; 
    } 

    LocationListener locationListenerGps = new LocationListener() { 
     public void onLocationChanged(Location location) { 
      timer1.cancel(); 
      locationResult.gotLocation(location); 
      lm.removeUpdates(this); 
      lm.removeUpdates(locationListenerNetwork); 
     } 
     public void onProviderDisabled(String provider) {} 
     public void onProviderEnabled(String provider) {} 
     public void onStatusChanged(String provider, int status, Bundle extras) {} 
    }; 

    LocationListener locationListenerNetwork = new LocationListener() { 
     public void onLocationChanged(Location location) { 
      timer1.cancel(); 
      locationResult.gotLocation(location); 
      lm.removeUpdates(this); 
      lm.removeUpdates(locationListenerGps); 
     } 
     public void onProviderDisabled(String provider) {} 
     public void onProviderEnabled(String provider) {} 
     public void onStatusChanged(String provider, int status, Bundle extras) {} 
    }; 

    class GetLastLocation extends TimerTask { 
     @Override 
     public void run() { 
      lm.removeUpdates(locationListenerGps); 
      lm.removeUpdates(locationListenerNetwork); 

      Location net_loc=null, gps_loc=null; 
      if(gps_enabled) 
       gps_loc=lm.getLastKnownLocation(LocationManager.GPS_PROVIDER); 
      if(network_enabled) 
       net_loc=lm.getLastKnownLocation(LocationManager.NETWORK_PROVIDER); 

      //if there are both values use the latest one 
      if(gps_loc!=null && net_loc!=null){ 
       if(gps_loc.getTime()>net_loc.getTime()) 
        locationResult.gotLocation(gps_loc); 
       else 
        locationResult.gotLocation(net_loc); 
       return; 
      } 

      if(gps_loc!=null){ 
       locationResult.gotLocation(gps_loc); 
       return; 
      } 
      if(net_loc!=null){ 
       locationResult.gotLocation(net_loc); 
       return; 
      } 
      locationResult.gotLocation(null); 
     } 
    } 

    public static abstract class LocationResult{ 
     public abstract void gotLocation(Location location); 
    } 
} 

を最高のロケーション結果を取得するために基準を使用することができます。

final MyLocation myLocation = new MyLocation(); 

       Handler mHandler = new Handler(Looper.getMainLooper()); 
       mHandler.post(new Runnable() { 
        public void run() { 
         locationResult = new LocationResult(){ 
          @Override 
          public void gotLocation(final Location location){ 
           //Got the location! 
           try{ 
            Methods.savePre(context, ""+location.getLatitude(), "LATITUDE"); 
            Methods.savePre(context, ""+location.getLongitude(), "LONGITUDE"); 
           }catch(Exception x){ 
            x.getMessage(); 
           } 
           Got_loc= true; 
           //        String geoAddress = "geo:" + location.getLatitude() + ","+ location.getLongitude() + "?z=15"; 
           //        Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(geoAddress)); 
           //        context.startActivity(intent); 
          } 
         }; 
         myLocation.getLocation(context, locationResult); 
        } 
       }); 
       while(!Got_loc){ 
        Thread.sleep(150); 
       } 

       Loc = Methods.getPref(context, "LATITUDE") + "%%" + Methods.getPref