通過GPS獲取緯度和經度

我正在嘗試在移動設備上獲取GPS經緯度。我的下面的代碼工作 - 即它以所需的方式提供所有信息 - 當選擇設備的「使用無線網絡」設置時，而不是選擇「使用GPS衛星」時，在這種情況下，我沒有得到任何信息。通過GPS獲取緯度和經度

下面的代碼：

void getLatitudeAndLongitude() { 
    boolean gpsEnabled = false; 
    LocationManager mLocMan = (LocationManager) getSystemService(Context.LOCATION_SERVICE); 
    Log.e("mLocation#####", "" + mLocMan); 

    try { 
     gpsEnabled = mLocMan 
       .isProviderEnabled(LocationManager.GPS_PROVIDER); 
    } catch (Exception ex) { 
    } 
    boolean networkEnabled = false; 
    try { 
     networkEnabled = mLocMan 
       .isProviderEnabled(LocationManager.NETWORK_PROVIDER); 
    } catch (Exception ex) { 
    } 
    Location mCurrentLocation = null; 

    // network***************** 

    if (networkEnabled) 
     mCurrentLocation = mLocMan 
       .getLastKnownLocation(LocationManager.NETWORK_PROVIDER); 

    // gps******************** 
    if (gpsEnabled) 
     mCurrentLocation = mLocMan 
       .getLastKnownLocation(LocationManager.GPS_PROVIDER); 

    Log.d("current location", "" + mCurrentLocation); 
    LocationProvider mGpsProv = null; 

    if (mGpsProv == null && mLocMan != null) { 
     mGpsProv = mLocMan.getProvider(LocationManager.GPS_PROVIDER); 
    } 

    if (mLocMan != null) { 

     mylocationlistener mGpsLocListener = new mylocationlistener(); 
     mLocMan.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 
       0 /* minTime ms */, 0 /* minDistance in meters */, 
       mGpsLocListener); 
     Log.d("Provoider1", "NETWORK_PROVIDER"); 
    } 
    if (mLocMan != null && mGpsProv != null) { 

     mylocationlistener mGpsLocListener = new mylocationlistener(); 
     mLocMan.requestLocationUpdates(LocationManager.GPS_PROVIDER, 
       0 /* minTime ms /, 0/minDistance in meters */, 0, 
       mGpsLocListener); 
     Log.d("Provoider2", "GPS_PROVIDER"); 
    } 

} 

class mylocationlistener implements LocationListener { 

    @Override 
    public void onLocationChanged(Location location) { 
     if (location != null) { 

      latitude = String.valueOf(location.getLatitude()); 
      longitude = String.valueOf(location.getLongitude()); 

      Log.e("location==", "" + location); 
      Log.e("getLatitude", location.getLatitude() + ""); 
      Log.e("getLongitude", location.getLongitude() + ""); 

      if (GlobalConfig.DEBUG) 
       Log.d("setUpIndividualWork", "location==" + location); 

      new Handler().postDelayed(new Runnable() { 
       @Override 
       public void run() { 

       } 
      }, 1000); 

      onGPSUpdate(location); 

      Geocoder gcd = new Geocoder(setUpIndividualWorkOut.this, 
        Locale.getDefault()); 
      List<Address> addresses = null; 
      try { 
       addresses = gcd.getFromLocation(location.getLatitude(), 
         location.getLongitude(), 1); 
      } catch (IOException e) { 
       e.printStackTrace(); 
      } 
      if (addresses != null && addresses.size() > 0) { 
       userCurrentLocation = addresses.get(0).getLocality(); 
       Log.e("current location by GPS ", "" 
         + addresses.get(0).getLocality()); 
      } 
     } 
    } 

    @Override 
    public void onProviderDisabled(String provider) { 
    } 

    @Override 
    public void onProviderEnabled(String provider) { 
    } 

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

我將是你的反應非常感謝。

來源

2012-07-31 umesh

當你嘗試這個時，你是否清楚地看到了天空？ GPS通常不起作用 – Craigy 2012-07-31 11:20:49

拋出一些'else's：如果'networkEnabled'和'gpsEnabled'都是'true'，那麼你得到了兩次LastKnownLocation。此外，如果mLocMan和mGpsProv都爲空，則您正在請求更新兩次。 – 2012-07-31 11:26:59

我用這樣的：類LocationHelper：

public class LocationManagerHelper { 
private static final String TAG = LocationManagerHelper.class.getSimpleName(); 
private Context mContext; 

private LocationManager mLocationManager; 
private GeoUpdateHandler mLocationListener = new GeoUpdateHandler(); 

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


public GeoUpdateHandler GetLocationListener() { 
    return mLocationListener; 
} 

public void SetLocationManager(LocationManager locationManager) { 
    mLocationManager = locationManager; 
} 

public LocationManager GetLocationManager() { 
    return mLocationManager; 
} 


public void Stop() { 
    if (mLocationManager != null) { 
     mLocationManager.removeUpdates(mLocationListener); 
    } 
} 

private class GeoUpdateHandler implements LocationListener { 
    @Override 
    public void onLocationChanged(Location loc) { 
     String longitude = "Longitude: " + loc.getLongitude(); 
     Log.v(TAG, longitude); 
     String latitude = "Latitude: " + loc.getLatitude(); 
     Log.v(TAG, latitude); 
    } 

    @Override 
    public void onStatusChanged(String s, int i, Bundle bundle) { 

    } 

    @Override 
    public void onProviderEnabled(String s) { 
    } 

    @Override 
    public void onProviderDisabled(String s) { 
    } 
}

}

//The using: 


private LocationManagerHelper mLocationManagerHelper; 

@Override 
     public void onCreate(Bundle savedInstanceState) { 
      super.onCreate(savedInstanceState); 
      InitializeComponent(getArguments()); 
      mLocationManagerHelper = new LocationManagerHelper(getActivity()); 

      try { 
       Criteria criteria = new Criteria(); 
       mLocationManagerHelper.SetLocationManager((LocationManager) getActivity().getSystemService(Context.LOCATION_SERVICE)); 
       mLocationManagerHelper.GetLocationManager().requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000L, 500.0f, mLocationManagerHelper.GetLocationListener()); 

       String provider = mLocationManagerHelper.GetLocationManager().getBestProvider(criteria, false); 
       Location location = mLocationManagerHelper.GetLocationManager().getLastKnownLocation(provider); 

       if (location != null) { 
        mLongitude = location.getLongitude(); 
        mLatitude = location.getLatitude(); 
       } 
      } catch (Exception ex) { 
       Log.e(TAG, "GPS", ex); 
      } 
     }

來源

2012-07-31 11:24:30 IamStalker

試試這個...

@Override 

public void onCreate(Bundle savedInstanceState) 

{ 

super.onCreate(savedInstanceState); 

setContentView(R.layout.main); 



LocationManager locationManager = 
(LocationManager) getSystemService(Context.LOCATION_SERVICE); 
MyLocationListener lmh = new MyLocationListener(); 

String mlocProvider; 
Criteria hdCrit = new Criteria(); 

hdCrit.setAccuracy(Criteria.ACCURACY_COARSE); 

mlocProvider = locationManager.getBestProvider(hdCrit, true); 

locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 3000, 1000, lmh); 
Location currentLocation = locationManager.getLastKnownLocation(mlocProvider); 

double currentLatitude = currentLocation.getLatitude(); 
double currentLongitude = currentLocation.getLongitude(); 
Log.e("lat",""+currentLatitude); 
Log.e("lng",""+currentLongitude); 
} 

public class MyLocationListener implements LocationListener 

{ 

public void onLocationChanged(Location loc) 

{ 

loc.getLatitude(); 

loc.getLongitude(); 

String Text = "My current location is:" + 

"Latitud = "+ loc.getLatitude() + 

"Longitud = " + loc.getLongitude(); 

Toast.makeText(getApplicationContext(), 

Text, 

Toast.LENGTH_SHORT).show(); 

} 



public void onProviderDisabled(String provider) 

{ 

Toast.makeText(getApplicationContext(), 

"Gps Disabled", 

Toast.LENGTH_SHORT).show(); 

} 


public void onProviderEnabled(String provider) 

{ 

Toast.makeText(getApplicationContext(), 

"Gps Enabled", 

Toast.LENGTH_SHORT).show(); 

} 



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

{ 

} 

}/* End of Class MyLocati

來源

2012-07-31 11:39:21

試試這個：

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(); 

} 
}}

來源

2013-01-29 08:49:00 MoiTempete

通過GPS獲取緯度和經度

回答

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