アンドロイドのGPS /位置情報サービスを常にオンにするにはどうすればいいですか？

Question

アンドロイドでGPS /位置情報サービスを常時オンにするにはどうすればよいですか？

プレイストアでこれまたは使用可能なアプリを実装するコードがある場合は、

配送ルートにいる従業員を追跡する必要があります。

Answer 1

私は以前のようなことをしました。ここ は、ロケーション・サービスである：

public class LocationService extends Service { 
    public static final String BROADCAST_ACTION = "Hello World"; 
    private static final int TWO_MINUTES = 1000 * 60 * 2; 
    public LocationManager locationManager; 
    public MyLocationListener listener; 
    public Location previousBestLocation = null; 

    public long refreshTime = 60*1000; 

    Intent intent; 
    int counter = 0; 

    @Override 
    public void onCreate() { 
     super.onCreate(); 
     intent = new Intent(BROADCAST_ACTION); 
    } 

    @Override 
    public int onStartCommand(Intent intent, int flags, int startId) { 
     locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE); 
     listener = new MyLocationListener(); 
     if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) { 
      // TODO: Consider calling 
      // ActivityCompat#requestPermissions 
      // here to request the missing permissions, and then overriding 
      // public void onRequestPermissionsResult(int requestCode, String[] permissions, 
      //           int[] grantResults) 
      // to handle the case where the user grants the permission. See the documentation 
      // for ActivityCompat#requestPermissions for more details. 
      return START_STICKY; 
     } 
     locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, refreshTime, 100, listener); 
     locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, refreshTime, 100, listener); 

     return START_STICKY; 
    } 
// @Override 
// public void onStart(Intent intent, int startId) { 
//  } 

    @Override 
    public IBinder onBind(Intent intent) { 
     return null; 
    } 

    protected boolean isBetterLocation(Location location, Location currentBestLocation) { 
     if (currentBestLocation == null) { 
      // A new location is always better than no location 
      return true; 
     } 

     // Check whether the new location fix is newer or older 
     long timeDelta = location.getTime() - currentBestLocation.getTime(); 
     boolean isSignificantlyNewer = timeDelta > TWO_MINUTES; 
     boolean isSignificantlyOlder = timeDelta < -TWO_MINUTES; 
     boolean isNewer = timeDelta > 0; 

     // If it's been more than two minutes since the current location, use the new location 
     // because the user has likely moved 
     if (isSignificantlyNewer) { 
      return true; 
      // If the new location is more than two minutes older, it must be worse 
     } else if (isSignificantlyOlder) { 
      return false; 
     } 

     // Check whether the new location fix is more or less accurate 
     int accuracyDelta = (int) (location.getAccuracy() - currentBestLocation.getAccuracy()); 
     boolean isLessAccurate = accuracyDelta > 0; 
     boolean isMoreAccurate = accuracyDelta < 0; 
     boolean isSignificantlyLessAccurate = accuracyDelta > 200; 

     // Check if the old and new location are from the same provider 
     boolean isFromSameProvider = isSameProvider(location.getProvider(), 
       currentBestLocation.getProvider()); 

     // Determine location quality using a combination of timeliness and accuracy 
     if (isMoreAccurate) { 
      return true; 
     } else if (isNewer && !isLessAccurate) { 
      return true; 
     } else if (isNewer && !isSignificantlyLessAccurate && isFromSameProvider) { 
      return true; 
     } 
     return false; 
    } 


    /** Checks whether two providers are the same */ 
    private boolean isSameProvider(String provider1, String provider2) { 
     if (provider1 == null) { 
      return provider2 == null; 
     } 
     return provider1.equals(provider2); 
    } 


    @Override 
    public void onDestroy() { 
     // handler.removeCallbacks(sendUpdatesToUI); 
     super.onDestroy(); 
     Log.i("STOP_SERVICE", "DONE"); 
     if (ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED && ActivityCompat.checkSelfPermission(this, Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) { 
      // TODO: Consider calling 
      // ActivityCompat#requestPermissions 
      // here to request the missing permissions, and then overriding 
      // public void onRequestPermissionsResult(int requestCode, String[] permissions, 
      //           int[] grantResults) 
      // to handle the case where the user grants the permission. See the documentation 
      // for ActivityCompat#requestPermissions for more details. 
      return; 
     } 
     locationManager.removeUpdates(listener); 
    } 

    public static Thread performOnBackgroundThread(final Runnable runnable) { 
     final Thread t = new Thread() { 
      @Override 
      public void run() { 
       try { 
        runnable.run(); 
       } finally { 

       } 
      } 
     }; 
     t.start(); 
     return t; 
    } 

    public class MyLocationListener implements LocationListener 
    { 

     public void onLocationChanged(final Location loc) 
     { 
      Log.i("**************************************", "Location changed"); 
      if(isBetterLocation(loc, previousBestLocation)) { 
       loc.getLatitude(); 
       loc.getLongitude(); 
       intent.putExtra("Latitude", loc.getLatitude()); 
       intent.putExtra("Longitude", loc.getLongitude()); 
       intent.putExtra("Provider", loc.getProvider()); 
       sendBroadcast(intent); 
       LocationHelper.sendLocation(loc.getLatitude(), loc.getLongitude(), 
       new MyPreferenceManager(App.context).getAuthToken()); 
       Log.i("b8", "Location : "+ loc.getLatitude() + ":"+ loc.getLongitude()); 
      } 
     } 

     public void onProviderDisabled(String provider) 
     { 
      MyToast.makeText(getApplicationContext(), "Gps Disabled", Toast.LENGTH_SHORT).show(); 
     } 


     public void onProviderEnabled(String provider) 
     { 
      MyToast.makeText(getApplicationContext(), "Gps Enabled", Toast.LENGTH_SHORT).show(); 
     } 


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

     } 

    } 
} 

あなたがこの権限を追加する必要がマニフェスト

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

にあなたが知っておくべき他の事は何の十分なメモリがないと思ったときにGCがサービスを殺すことができるということです（アプリがバックグラウンドであるか、ユーザーによって閉じられているか） もちろんreturn START_STICKY;をonStartCommandで実行するとサービスが再開されますが、空きメモリに依存します。