Получение «спутников в поле зрения» и «использование спутников» в Android

Question

У меня необычно трудное время, когда вы получаете правильные «спутники в использовании» и «спутники в поле зрения» целые числа из моей реализации GPS. Я рассмотрел множество соответствующих потоков Stackoverflow без немедленного просветления. Ниже приводится то, что у меня есть до сих пор, что «должно» работать, но это не так. Я перестраивал это несколько раз с разных точек зрения, не получая ни количество используемых спутников, ни спутников. Заранее спасибо ...

public class GpsData extends Service implements LocationListener { 
private GpsStatus mGpsStatus; 
private final Context mContext; 
boolean isGPSEnabled = false; // flag for GPS status 
boolean isNetworkEnabled = false; // flag for network status 
boolean canGetLocation = false; // flag for GPS status 
Location location; // location 
double dLatitude, dAltitude, dLongitude, dAccuracy, dSpeed, dSats; 
float fAccuracy, fSpeed; 
long lSatTime;  // satellite time 
String szSignalSource, szAltitude, szAccuracy, szSpeed; 
public String szSatellitesInView; 
public String szSatellitesInUse; 
public static String szSatTime; 
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 0; // 0 meters 
private static final long MIN_TIME_BW_UPDATES = 1000; //1 sec 
protected LocationManager locationManager; 
protected GpsListener gpsListener = new GpsListener(); 

public GpsData(Context context) { 
    this.mContext = context; 
    getLocation(); 
    locationManager.addGpsStatusListener(gpsListener); 
} 
class GpsListener implements GpsStatus.Listener{ 
    @Override 
    public void onGpsStatusChanged(int event) { 
     int iCountInView = 0; 
     int iCountInUse = 0;    
     mGpsStatus = locationManager.getGpsStatus(mGpsStatus);   
     Iterable<GpsSatellite> satellites = mGpsStatus.getSatellites(); 
     if (satellites != null) { 
      for (GpsSatellite gpsSatellite : satellites) { 
       iCountInView++; 
       if (gpsSatellite.usedInFix()) { 
        iCountInUse++; 
       } 
      } 
     } 
     { 
      { 
      szSatellitesInView = String.valueOf(iCountInView);   
      szSatellitesInUse = String.valueOf(iCountInUse); 
    } 
    } 
public Location getLocation() { 
    try { 
     locationManager = (LocationManager) mContext.getSystemService(LOCATION_SERVICE); 
     // getting GPS satellite status 
     isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER); 
     // getting cellular network status 
     isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER); 
     if (!isGPSEnabled && !isNetworkEnabled) { 
      // no network provider is enabled 
     } else { 
      this.canGetLocation = true; 
      // First get location from Network Provider 
      if (isNetworkEnabled) { 
       locationManager.addGpsStatusListener(gpsListener);//needed? 
       locationManager.requestLocationUpdates(
         LocationManager.NETWORK_PROVIDER, 
         MIN_TIME_BW_UPDATES, 
         MIN_DISTANCE_CHANGE_FOR_UPDATES, this); 
       Log.d("Cell tower", "Cell tower"); 
       if (locationManager != null) { 
        location = locationManager 
          .getLastKnownLocation(LocationManager.NETWORK_PROVIDER); 
        if (location != null) { 
         dLatitude = location.getLatitude(); 
         dLongitude = location.getLongitude(); 
         lSatTime = location.getTime(); 
        } 
       } 
      } 
      // if GPS Enabled get lat/long using GPS Services 
      if (isGPSEnabled) { 
       if (location == null) { 
        locationManager.addGpsStatusListener(gpsListener); 
        locationManager.requestLocationUpdates(
          LocationManager.GPS_PROVIDER, 
          MIN_TIME_BW_UPDATES, 
          MIN_DISTANCE_CHANGE_FOR_UPDATES, this); 
        Log.d("GPS Enabled", "GPS Enabled"); 
        if (locationManager != null) { 
         location = locationManager 
           .getLastKnownLocation(LocationManager.GPS_PROVIDER); 
         if (location != null) { 
          dLatitude = location.getLatitude(); 
          dLongitude = location.getLongitude(); 
          lSatTime = location.getTime(); 
         } 
        } 
       } 
      } 
     } 

    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
    return location; 
} 

Answer 1

Получил его.

public class GpsData extends Service implements LocationListener { 

boolean isGPSEnabled = false; // flag for GPS satellite status 
boolean isNetworkEnabled = false; // flag for cellular network status 
boolean canGetLocation = false; // flag for either cellular or satellite status 

private GpsStatus mGpsStatus; 
private final Context mContext; 
protected LocationManager locationManager; 
protected GpsListener gpsListener = new GpsListener(); 

Location location; // location 
double dLatitude, dAltitude, dLongitude, dAccuracy, dSpeed, dSats; 
float fAccuracy, fSpeed; 
long lSatTime;  // satellite time 
String szSignalSource, szAltitude, szAccuracy, szSpeed; 

public String szSatellitesInUse, szSatellitesInView; 
public static String szSatTime; 
private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 0; // 0 meters 
private static final long MIN_TIME_BW_UPDATES = 1000; //1 second 

public GpsData(Context context) { 
    this.mContext = context; 
    getLocation(); 
} 
class GpsListener implements GpsStatus.Listener{ 
    @Override 
    public void onGpsStatusChanged(int event) { 
    } 
} 
public Location getLocation() { 
    try { 
     locationManager = (LocationManager) mContext.getSystemService(LOCATION_SERVICE); 
     isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER);// getting GPS satellite status 
     isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER);// getting cellular network status 
     if (!isGPSEnabled && !isNetworkEnabled) { 
     } else { 
      this.canGetLocation = true; 
      if (isNetworkEnabled) {//GPS is enabled, getting lat/long via cellular towers 
       locationManager.addGpsStatusListener(gpsListener);//inserted new 
       locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER,MIN_TIME_BW_UPDATES,MIN_DISTANCE_CHANGE_FOR_UPDATES, this); 
       Log.d("Cell tower", "Cell tower"); 
       if (locationManager != null) { 
        location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER); 
        if (location != null) { 
         szAltitude = " NA (using cell towers)"; 
         szSatellitesInView = " NA (using cell towers)"; 
         szSatellitesInUse = " NA (using cell towers)";   
        } 
       } 
      } 
      if (isGPSEnabled) {//GPS is enabled, gettoing lat/long via satellite 
       if (location == null) { 
        locationManager.addGpsStatusListener(gpsListener);//inserted new 
        locationManager.getGpsStatus(null); 
        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER,MIN_TIME_BW_UPDATES,MIN_DISTANCE_CHANGE_FOR_UPDATES, this); 
        Log.d("GPS Enabled", "GPS Enabled"); 
        if (locationManager != null) { 
         location = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER); 
         if (location != null) { 
          dAltitude = location.getAltitude(); 
          szAltitude = String.valueOf(dAltitude); 
          /************************************************************** 
          * Provides a count of satellites in view, and satellites in use 
          **************************************************************/ 
          mGpsStatus = locationManager.getGpsStatus(mGpsStatus);   
          Iterable<GpsSatellite> satellites = mGpsStatus.getSatellites(); 
          int iTempCountInView = 0; 
          int iTempCountInUse = 0; 
          if (satellites != null) { 
           for (GpsSatellite gpsSatellite : satellites) { 
            iTempCountInView++; 
            if (gpsSatellite.usedInFix()) { 
             iTempCountInUse++; 
            } 
           }  
          } 
          szSatellitesInView = String.valueOf(iTempCountInView); 
          szSatellitesInUse = String.valueOf(iTempCountInUse); 
         } 
        } 
       } 
      } 
     } 

    } catch (Exception e) { 
     e.printStackTrace(); 
    } 
    return location; 
}