Google Map API 2 ne montre pas l'emplacement actuel

Question

Je suis essayer de montrer l'emplacement actuel en utilisant android google map api 2, je cours cela sur mon téléphone qui est wifi activer.

Mais il montre toujours Longitude et Latitude 0.0, 0.0.

Voici mon code

package com.google.map; 

    import com.google.android.gms.common.ConnectionResult; 
    import com.google.android.gms.common.GooglePlayServicesUtil; 
    import com.google.android.gms.maps.CameraUpdateFactory; 
    import com.google.android.gms.maps.GoogleMap; 
    import com.google.android.gms.maps.GoogleMap.OnMapLongClickListener; 
    import com.google.android.gms.maps.MapFragment; 
    import com.google.android.gms.maps.model.CameraPosition; 
    import com.google.android.gms.maps.model.LatLng; 
    import com.google.map.R; 

    import android.location.Criteria; 
    import android.location.Location; 
    import android.location.LocationListener; 
    import android.location.LocationManager; 
    import android.os.Bundle; 
    import android.annotation.SuppressLint; 
    import android.app.Activity; 
    import android.app.Dialog; 
    import android.app.FragmentManager; 
    import android.content.Intent; 
    import android.util.Log; 
    import android.view.Menu; 
    import android.view.MenuItem; 
    import android.widget.Toast; 

    public class MainActivity extends Activity implements LocationListener{ 

private GoogleMap googlemap; 
@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 

    if(isGooglePlay()) 
    { 
     setContentView(R.layout.activity_main); 
     setUpMap(); 
    } 
} 


@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.main, menu); 
    return true; 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    // TODO Auto-generated method stub 
    if(item.getItemId() == R.id.action_legalnotices) 
    { 
     startActivity(new Intent(this, LegalNoticesActivity.class)); 
    } 
    return super.onOptionsItemSelected(item); 
} 

private boolean isGooglePlay() 
{ 
    int status = GooglePlayServicesUtil.isGooglePlayServicesAvailable(getApplicationContext()); 

    if(status == ConnectionResult.SUCCESS) 
    { 
     return true; 
    } 
    else 
    { 
     ((Dialog)GooglePlayServicesUtil.getErrorDialog(status, this, 10)).show(); 
     Toast.makeText(getApplicationContext(), "Google play is not available.", Toast.LENGTH_LONG).show(); 
    } 
    return false; 
} 

@SuppressLint("NewApi") private void setUpMap() 
{ 
    if(googlemap == null) 
    { 
     googlemap = ((MapFragment)getFragmentManager().findFragmentById(R.id.map)).getMap(); 
     if(googlemap != null) 
     { 
      // map code 
      googlemap.setMyLocationEnabled(true); 

      googlemap.setMapType(GoogleMap.MAP_TYPE_NORMAL); 

      LocationManager lo = (LocationManager) getSystemService(LOCATION_SERVICE); 

      String provider = lo.getBestProvider(new Criteria(),true); 


      if(provider == null) 
      { 
       onProviderDisabled(provider); 
      } 
      else 
      { 
       onProviderEnabled(provider); 
      } 

      Location loc = lo.getLastKnownLocation(provider); 

      if(loc != null) 
      { 
       onLocationChanged(loc); 
      } 


      googlemap.setOnMapLongClickListener(onLongClickMapSettings()); 
     } 
    } 
} 


private OnMapLongClickListener onLongClickMapSettings() { 
    // TODO Auto-generated method stub 
    return new OnMapLongClickListener() { 

     @Override 
     public void onMapLongClick(LatLng arg0) { 
      // TODO Auto-generated method stub 
      Log.i(arg0.toString(),"Long Click"); 
     } 
    }; 
} 


@Override 
public void onLocationChanged(Location location) { 
    // TODO Auto-generated method stub 
    LatLng latlng = new LatLng(location.getLatitude(),location.getLongitude()); 

    googlemap.moveCamera(CameraUpdateFactory.newLatLng(latlng)); 
    googlemap.moveCamera(CameraUpdateFactory.zoomTo(5)); 

} 


@Override 
public void onProviderDisabled(String provider) { 
    // TODO Auto-generated method stub 

} 


@Override 
public void onProviderEnabled(String provider) { 
    // TODO Auto-generated method stub 
    Location lo = new Location(provider); 

    LatLng latlng = new LatLng(lo.getLatitude(),lo.getLongitude()); 

    Log.i(latlng.toString(),"Current Location"); 
    googlemap.moveCamera(CameraUpdateFactory.newLatLng(latlng)); 
    googlemap.moveCamera(CameraUpdateFactory.newLatLngZoom(latlng, 5)); 

} 


@Override 
public void onStatusChanged(String provider, int status, Bundle extras) { 
    // TODO Auto-generated method stub 

} 
    } 

Voici la valeur de chat journal de mon application android.

05-07 22:16:31.636: I/lat/lng: (0.0,0.0)(17967): Current Location 

Answer 1

Déplacer votre code Log.i(latlng.toString(),"Current Location"); à la onLocationChanged -method, vous ne disposez pas d'un emplacement encore onProviderEnabled.

Answer 2

mMap.setMyLocationEnabled(true); // just add one line it wil work.