Android地图获取经度和纬度

Question

我正在尝试获取位置经度和纬度，以便在更新时出现在祝酒词上。但是，没有出现！地图加载得很好，但我无法获得吐司中的坐标。任何提示？

  package com.parse.starter;

  import android.app.Activity;
  import android.location.Location;
  import android.location.LocationListener;
  import android.os.Bundle;
  import android.util.Log;
  import android.widget.TextView;
  import android.widget.Toast;

  import com.google.android.gms.common.ConnectionResult;
  import com.google.android.gms.common.api.GoogleApiClient;
  import com.google.android.gms.location.LocationRequest;
  import com.google.android.gms.location.LocationServices;
  import com.google.android.gms.maps.CameraUpdateFactory;
  import com.google.android.gms.maps.GoogleMap;
  import com.google.android.gms.maps.MapFragment;
  import com.google.android.gms.maps.OnMapReadyCallback;
  import com.google.android.gms.maps.model.LatLng;
  import com.google.android.gms.maps.model.MarkerOptions;
  import com.parse.ParseAnalytics;
  import com.parse.ParseObject;

  public class ParseStarterProjectActivity extends Activity implements OnMapReadyCallback,
    GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener, LocationListener {
/** Called when the activity is first created. */

/**
 * Provides the entry point to Google Play services.
 */
public static final long UPDATE_INTERVAL_IN_MILLISECONDS = 20000;

/**
 * The fastest rate for active location updates. Exact. Updates will never be more frequent
 * than this value.
 */
public static final long FASTEST_UPDATE_INTERVAL_IN_MILLISECONDS =
        UPDATE_INTERVAL_IN_MILLISECONDS / 2;

// Keys for storing activity state in the Bundle.
protected final static String REQUESTING_LOCATION_UPDATES_KEY = "requesting-location-updates-key";
protected final static String LOCATION_KEY = "location-key";
protected final static String LAST_UPDATED_TIME_STRING_KEY = "last-updated-time-string-key";
protected GoogleApiClient mGoogleApiClient;

/**
 * Stores parameters for requests to the FusedLocationProviderApi.
 */
protected LocationRequest mLocationRequest;

/**
 * Represents a geographical location.
 */
protected Location mCurrentLocation;

/**
 * Tracks the status of the location updates request. Value changes when the user presses the
 * Start Updates and Stop Updates buttons.
 */
protected Boolean mRequestingLocationUpdates;

/**
 * Time when the location was updated represented as a String.
 */
protected String mLastUpdateTime;

public void onCreate(Bundle savedInstanceState) {
    Log.d("message: ", "1");

    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    ParseAnalytics.trackAppOpenedInBackground(getIntent());
    Log.d("message: ", "made it this far");

    try {

        MapFragment mapFragment = (MapFragment) getFragmentManager()
                .findFragmentById(R.id.map);
        mapFragment.getMapAsync(this);

    } catch (Exception exc) {
    Log.d("ERror:", exc.getMessage().toString());
    }

    buildGoogleApiClient();
}

@Override
public void onMapReady(GoogleMap map) {
    LatLng sydney = new LatLng(-33.867, 151.206);

    map.setMyLocationEnabled(true);
    map.moveCamera(CameraUpdateFactory.newLatLngZoom(sydney, 13));

    map.addMarker(new MarkerOptions()
            .title("Sydney")
            .snippet("The most populous city in Australia.")
            .position(sydney));
    map.setMyLocationEnabled(true);
}

protected synchronized void buildGoogleApiClient() {
    Toast.makeText(this,"buildGoogleApiClient",
            Toast.LENGTH_SHORT).show();
    mGoogleApiClient = new GoogleApiClient.Builder(this)
            .addConnectionCallbacks(this)
            .addOnConnectionFailedListener(this)
            .addApi(LocationServices.API)
            .build();
    createLocationRequest();
}
@Override
public void onConnected(Bundle bundle) {
    Toast.makeText(this,"onConnected",
            Toast.LENGTH_SHORT).show();
    if (mRequestingLocationUpdates) {
        startLocationUpdates();
    }
}

protected void startLocationUpdates() {
    LocationServices.FusedLocationApi.requestLocationUpdates(
            mGoogleApiClient, mLocationRequest, (com.google.android.gms.location.LocationListener) this);
    Toast.makeText(this,"startLocationUpdates",
            Toast.LENGTH_SHORT).show();
}

@Override
public void onConnectionSuspended(int i) {

}

@Override
public void onConnectionFailed(ConnectionResult connectionResult) {

}

protected void createLocationRequest() {
    LocationRequest mLocationRequest = new LocationRequest();
    mLocationRequest.setInterval(10000);
    mLocationRequest.setFastestInterval(5000);
    mLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
}

@Override
public void onLocationChanged(Location location) {
    // mCurrentLocation = location;
   // location.
    mCurrentLocation=location;
    TextView txt = (TextView) findViewById(R.id.longlat);
    Toast.makeText(this,location.getLongitude() + " " + location.getLatitude() ,
            Toast.LENGTH_SHORT).show();
    Toast.makeText(this,"onLocationChanged",
            Toast.LENGTH_SHORT).show();
    Log.i("longitude / latitude", location.getLongitude() + " " + location.getLatitude());
    ParseObject sLocation = new ParseObject("Location");
    sLocation.put("longitude", location.getLongitude());
    sLocation.put("latitude", location.getLatitude());
    sLocation.put("altitude", location.getAltitude());
    sLocation.put("accuracy", location.getAccuracy());
    sLocation.saveInBackground();
}


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

}

@Override
public void onProviderEnabled(String provider) {

}

@Override
public void onProviderDisabled(String provider) {

}
}