GeoPoint和當前位置

Question

如何從我的位置獲取當前的GeoPoint。 我在： 經度：21.760029 緯度：54.035795

但是當我使用getLatitude（），我有54.0 但我想54.035795。

請幫忙。

Answer 1

下面是一個緯度，經度對轉換爲GeoPoint對象的方法：

public static GeoPoint convert(double latitude, double longitude) 
{ 
    int lat = (int)(latitude * 1E6); 
    int lng = (int)(longitude * 1E6); 

    return new GeoPoint(lat, lng); 
} 

Answer 2

我使用它：

LocationGpsListener mGPS = new LocationGpsListener(this); 
currentLocation = mGPS.getLocation(); 

和監聽：

import android.app.AlertDialog; 
import android.content.Context; 
import android.content.DialogInterface; 
import android.content.Intent; 
import android.location.Location; 
import android.location.LocationListener; 
import android.location.LocationManager; 
import android.os.Bundle; 
import android.provider.Settings; 
import android.util.Log; 


public final class LocationGpsListener implements LocationListener { 

     private final Context mContext; 
     public boolean isGPSEnabled = false; 
     boolean isNetworkEnabled = false; 
     boolean canGetLocation = false; 

     Location location; 
     Double latitude; 
     Double longitude; 

     private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; 
     private static final long MIN_TIME_BW_UPDATES = 1000 * 60 * 1; 

     protected LocationManager locationManager; 

     public LocationGpsListener(Context context) { 
      this.mContext = context; 
      getLocation(); 
     } 

     public Location getLocation() { 
      try { 
       locationManager = (LocationManager) mContext.getSystemService(Context.LOCATION_SERVICE); 
       isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER); 
       Log.v("isGPSEnabled", "=" + isGPSEnabled); 

       isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER); 
       Log.v("isNetworkEnabled", "=" + isNetworkEnabled); 

       if (isGPSEnabled == false && isNetworkEnabled == false) { 

       } else { 
        this.canGetLocation = true; 
        if (isNetworkEnabled) { 
         locationManager.requestLocationUpdates(
           LocationManager.NETWORK_PROVIDER, 
           MIN_TIME_BW_UPDATES, 
           MIN_DISTANCE_CHANGE_FOR_UPDATES, this); 
         if (locationManager != null) { 
          location = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER); 
          if (location != null) { 
           latitude = location.getLatitude(); 
           longitude = location.getLongitude(); 
          } 
         } 
        } 
        if (isGPSEnabled) { 
         if (location == 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) { 
            latitude = location.getLatitude(); 
            longitude = location.getLongitude(); 
           } 
          } 
         } 
        } 
       } 

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

      return location; 
     } 

     public void stopUsingGPS() { 
      if (locationManager != null) { 
       locationManager.removeUpdates(LocationGpsListener.this); 
      } 
     } 

     public double getLatitude() { 
      if (location != null) { 
       latitude = location.getLatitude(); 
      } 
      return latitude; 
     } 

     public double getLongitude() { 
      if (location != null) { 
       longitude = location.getLongitude(); 
      } 
      return longitude; 
     } 

     public boolean canGetLocation() { 
      return this.canGetLocation; 
     } 

     public void showSettingsAlert() { 
      AlertDialog.Builder alertDialog = new AlertDialog.Builder(mContext); 

      alertDialog.setTitle("Ustawienia GPS"); 
      alertDialog.setMessage("GPS jest wyłączony. Przejść do ustawień GPS?"); 

      alertDialog.setPositiveButton("Settings", 
        new DialogInterface.OnClickListener() { 
         public void onClick(DialogInterface dialog, int which) { 
          Intent intent = new Intent(
            Settings.ACTION_LOCATION_SOURCE_SETTINGS); 
          mContext.startActivity(intent); 
         } 
        }); 

      alertDialog.setNegativeButton("Cancel", 
        new DialogInterface.OnClickListener() { 
         public void onClick(DialogInterface dialog, int which) { 
          dialog.cancel(); 
         } 
        }); 
      alertDialog.show(); 
     } 

     @Override 
     public void onLocationChanged(Location location) { 
      this.location = location; 
     } 

     @Override 
     public void onProviderDisabled(String provider) { 
     } 

     @Override 
     public void onProviderEnabled(String provider) { 
     } 

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