GPS让我只有一个位置,而且永远不会改变Android

时间:2013-01-19 13:55:43

标签: android gps

在我的应用程序中我可以使用GPS,但问题是它总是让我在同一个位置。每次我从中检索位置时,它都给我相同的值。第一次被取出,我无线上网。然后我只带GPS去了,即使我在一英里外的位置是相同的。我启用了3g但仍然相同。

我将我的应用程序发送给我的朋友,他有一个不同的第一时间位置,然后无论他去哪里,他都会看到相同的。

这是我的代码:

public Location getLocation() {
        try {
            locationManager = (LocationManager) mContext
                    .getSystemService(LOCATION_SERVICE);

            // getting GPS status
            isGPSEnabled = locationManager
                    .isProviderEnabled(LocationManager.GPS_PROVIDER);

            // getting 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) {
//                  System.out.println("Network enabled");
                    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 GPS Enabled get lat/long using GPS Services
                if (isGPSEnabled) {
//                  System.out.println("GPS enabled");
                    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;
    }

 @Override
    public void onLocationChanged(Location location) {
//      mAct.playToastMessage("Location Changed");
        getLocation();
//      mAct.setGPSText(location.getLatitude(),location.getLongitude());
    }

    @Override
    public void onProviderDisabled(String provider) {
    }

    @Override
    public void onProviderEnabled(String provider) {
    }

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

    @Override
    public IBinder onBind(Intent arg0) {
        return null;
    }

2 个答案:

答案 0 :(得分:3)

 locationManager.requestLocationUpdates(
                          LocationManager.NETWORK_PROVIDER,
                       MIN_TIME_BW_UPDATES,
                        MIN_DISTANCE_CHANGE_FOR_UPDATES, this);

在此对于MIN_TIME_BW_UPDATES和MIN_DISTANCE_CHANGE_FOR_UPDATES的参数,您必须设置0和0.如果它设置为0,0。它会尽快为您提供位置更新。如果为您设置较大的值,则在您的条件满足之前,您永远不会获得更新的值。我希望这可以解决你的问题。

答案 1 :(得分:1)

@Override

public void onLocationChanged(Location loc)

{

loc.getLatitude();

loc.getLongitude();

String Text = “My current location is: “ +

“Latitude = “ + loc.getLatitude() +

“Longitude = “ + loc.getLongitude();


Toast.makeText( getApplicationContext(),Text,Toast.LENGTH_SHORT).show();

}

来源:Tutorial on GPS to get Current Location.