Develop Reference

Android : Can't get location by WIFI on android TV

here's my problem :
I have this code (from this tuto) :
public Location getLocation(Context act) {
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;
if (ContextCompat.checkSelfPermission(act, Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
// First get location from Network Provider
if (isNetworkEnabled) {
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
MIN_TIME_BW_UPDATES,
MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
Log.d("Network", "Network");
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) {
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;
}
It works just fine on AVD and phone but with android TV, it won't work.
My android TV is on "use Wifi to estimate location" ( and is "on" of course) so I thought that even if there is no GPS_PROVIDER it at least should go on NETWORK_PROVIDER but isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER); is always false.
I specify that I have wifi on my tv and when I entered google map in my browser it found me.
Can someone please help me understand why it doesn't work or propose an other solution to get my location (apart from google play service, my TV doesn't have it installed)...
EDIT
My manifest :
<!-- lire dans la carte sd -->
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<!-- écrire dans la carte sd -->
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<!--location -->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<!-- accès à internet -->
<uses-permission android:name="android.permission.INTERNET" />
<!-- accès à l'état de la connection internet -->
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<!-- pour enlever le bouton recent app -->
<uses-permission android:name="android.permission.REORDER_TASKS" />
<!-- pour l'AccountManager -->
<uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS"/>
<!-- pareil je crois -->
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<!-- Pour delete les accounts -->
<uses-permission android:name="android.permission.MANAGE_ACCOUNTS" />
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-feature
android:name="android.hardware.touchscreen"
android:required="false" />
<uses-feature
android:name="android.software.leanback"
android:required="true" />
<uses-feature
android:name="android.hardware.faketouch"
android:required="false" />
<uses-feature
android:name="android.hardware.telephony"
android:required="false" />
<uses-feature
android:name="android.hardware.camera"
android:required="false" />
<uses-feature
android:name="android.hardware.nfc"
android:required="false" />
<uses-feature
android:name="android.hardware.location.gps"
android:required="false" />
<uses-feature android:name="android.hardware.location.network"/>
<uses-feature
android:name="android.hardware.microphone"
android:required="false" />
<uses-feature
android:name="android.hardware.sensor"
android:required="false" />
<supports-screens
android:largeScreens="true"
android:normalScreens="false"
android:requiresSmallestWidthDp="720"
android:smallScreens="false"
android:xlargeScreens="true" />

You can use the LocationServices API in Google Play Services to obtain the user's location. It is a "FusedLocationProvider", incorporating a variety of inputs including Wi-Fi to determine a user's location.
First: Add the COARSE_LOCATION permission:
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
Then init your object:
FusedLocationProviderClient mFusedLocationClient = LocationServices.getFusedLocationProviderClient(this);
And get the user's last location through a listener
mFusedLocationClient.getLastLocation()
.addOnSuccessListener(this, new OnSuccessListener<Location>() {
#Override
public void onSuccess(Location location) {
// Got last known location. In some rare situations this can be null.
if (location != null) {
// ...
}
}
});

You may refer with this thread wherein it stated that you will only need these permissions in you manifest:
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
Then replace the condition to check if you GPS is enabled:
if (isGPSEnabled) {
if (location == null) {
locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, MIN_TIME_BW_UPDATES,MIN_DISTANCE_CHANGE_FOR_UPDATES, (LocationListener)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();
}
}
}
} //end-if isGPSEnabled
Additional references:
LocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER) is not reliable, why?
There are 2 conditions must be met that LocationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER) returns true.
Some internal state is ready for network location.
Network location is enabled on setting screen.
.isProviderEnabled(LocationManager.NETWORK_PROVIDER) is always true in Android
...So long as the network provider is not disabled in Settings, isProviderEnabled(LocationManager.NETWORK_PROVIDER)will return true. The provider being enabled has nothing to do with whether the provider will work given your lack of network connection.
Hope this helps!

Android LocationManager network provider returns null

I wanted to get my GPS coordinates using Android App. I started developing, and I can get GPS coordinates, but they are not accurate. I wanted to use NETWORK_PROVIDER, but the Location by this provider is always null. More interesting, isProvicerEnabled returns true.
I used example from this thread (best answer)
enter link description here
private void _getLocation() {
// Get the location manager
try {
boolean isGPSEnabled = false;
boolean isNetworkEnabled = false;
locationManager = (LocationManager) getApplicationContext().getSystemService(LOCATION_SERVICE);
Location location = null;
double latitude = -1;
double longitude = -1;
// 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 {
if (isNetworkEnabled) {
showToast("network");
locationManager.requestLocationUpdates(
LocationManager.NETWORK_PROVIDER,
1000,
0, this);
Log.d("Network", "Network Enabled");
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
else if (isGPSEnabled) {
showToast("gps");
if (location == null) {
locationManager.requestLocationUpdates(
LocationManager.GPS_PROVIDER,
1000,
0, this);
Log.d("GPS", "GPS Enabled");
if (locationManager != null) {
location = locationManager
.getLastKnownLocation(LocationManager.GPS_PROVIDER);
if (location != null) {
latitude = location.getLatitude();
longitude = location.getLongitude();
}
}
}
}
}
showToast("" + latitude + longitude);
} catch (Exception e) {
e.printStackTrace();
}
I have all the permissions in manifest
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
I know the code is dirty, but for now it's only for testing. Do I miss something? I found similar examples in many places, and it seems pretty straight, so I am a little confused.
My phone works ok, GPS and network works fine. For example Google Maps application I have works well. Any suggestions?

Please do NOT use this code. It's bad. It has a lot of errors. Also, getLastKnownLocation will return null if it doesn't have a location yet. Which it always will if nobody on the phone is using requestUpdates.
Your code is taken from a class that was posted on a very old thread on here called GPSTracker. I've been trying to kill that code for months- it causes far more problems than it helps. If you want better example code, try http://gabesechansoftware.com/location-tracking/ which is a blog post I wrote about how bad that code is. It will show you the correct way to do it, and explains some of what's wrong with that code.

Why I am Getting different Gps coordinates in same location from NETWORK_PROVIDER?

i am getting different Gps coordinates in same location why its happening. But i need to change gps coordinates only moves after 10 meters . How can i do that.
Here is my code.
private static final long MINIMUM_TIME_BETWEEN_UPDATES = 1000;
private static final float MIN_GEOGRAPHIC_POOLING_DISTANCE = (float)10.0;
double myLat_Values;
double myLog_Vaues;
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, MINIMUM_TIME_BETWEEN_UPDATES, MIN_GEOGRAPHIC_POOLING_DISTANCE, new MyLocationListener());
private class MyLocationListener implements LocationListener {
#Override
public void onLocationChanged(Location location) {
longitude_str = String.valueOf(location.getLongitude());
latitude_str = String.valueOf(location.getLatitude());
Double longitude_number = Double.valueOf(longitude_str);
DecimalFormat dec = new DecimalFormat("#.000000");
longitude_message = dec.format(longitude_number);
Double latitude_number = Double.valueOf(latitude_str);
DecimalFormat decim = new DecimalFormat("#.000000");
latitude_message = decim.format(latitude_number);
try
{
myLat_Values = Double.valueOf(latitude_message);
myLog_Vaues = Double.valueOf(longitude_message);
}
catch(NullPointerException ex)
{
myLat_Values = 0;
myLog_Vaues = 0;
}
System.out.println("GPS Values Clockout:"+myLat_Values+"-"+myLog_Vaues);
}
public void onProviderDisabled(String s) {}
#Override
public void onProviderEnabled(String provider) {}
#Override
public void onStatusChanged(String provider, int status, Bundle extras) {}
}
also i used these into manifestfile :
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
I used this link
please anybody give a suggestion how to solve my problem.
Thank you in advanced.

When you use NETWORK_PROVIDER ,it returns GPS co-ordinates based on the Network Service Provider you are using. But when you are using GPS_PROVIDER it returns GPS co-ordinates based on the satelites.
For Accuracy Criteria, add following code,
locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_HIGH);
locationManager.getBestProvider(criteria, true);
ACCURACY_HIGH less than 100 meters
ACCURACY_MEDIUM between 100 - 500 meters
ACCURACY_LOW greater than 500 meters
Also, you need to declare following GPS Permission in AndroidManifest.xml
<uses-permission android:name="android.permission.ACCESS_GPS"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>

android - GPS not accurate

i am trying to show on the map where i am.
I am in Israel and it shows me i am in Egypt.
I tried implementing all of the suggestions of different posts and non helped me solve my problem.
I turned on GPS.
I am connected to the Internet.
When i launch MAPS default android App it shows my real location!
MANIFEST PERMISSIONS:
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.SEND_SMS" />
<uses-permission android:name="android.permission.RECEIVE_SMS" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.VIBRATE"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
<uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
I also use the uses-library android:name="com.google.android.maps".
This is the relevant code from the MapActivity which extends LocationListener:
lm = (LocationManager) getSystemService(LOCATION_SERVICE);
boolean enabled = lm
.isProviderEnabled(LocationManager.GPS_PROVIDER);
// Check if enabled and if not send user to the GSP settings
// Better solution would be to display a dialog and suggesting to
// go to the settings
if (!enabled) {
Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
startActivity(intent);
}
if(came_from.matches("FollowLocation"))
{
Location location;
Criteria criteria = new Criteria();
criteria.setAccuracy(Criteria.ACCURACY_FINE);
String providerName = lm.getBestProvider(criteria, true);
// If no suitable provider is found, null is returned.
if (providerName == null)
{
// reflecting changes if distance travel by
// user is greater than 20m from current location
// and every 1 minute
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, this);
location=lm.getLastKnownLocation(LocationManager.GPS_PROVIDER);
}
else
{
// reflecting changes if distance travel by
// user is greater than 20m from current location
// and every 1 minute
lm.requestLocationUpdates(providerName, 1*60*1000, 20, this);
location=lm.getLastKnownLocation(providerName);
}
gMapView = (MapView) findViewById(R.id.myGMap);
gMapView.setStreetView(true);
mc = gMapView.getController();
if (location != null)
{
lat = location.getLatitude();
lng = location.getLongitude();
mc.setZoom(14);
}
else //in case we didn't get the location yet
{
lat = 32.08;
lng = 35.84;
mc.setZoom(9);
}
p = new GeoPoint((int) lat * 1000000, (int) lng * 1000000);
mc.animateTo(p);
// Adding zoom controls to Map
gMapView.setBuiltInZoomControls(true);
// Add a location mark
MyLocationOverlay myLocationOverlay = new MyLocationOverlay();
List<Overlay> list = gMapView.getOverlays();
list.add(myLocationOverlay);
}
}
/* This method is called when use position will get changed */
public void onLocationChanged(Location location) {
if (location != null) {
double lat = location.getLatitude();
double lng = location.getLongitude();
p = new GeoPoint((int) lat * 1000000, (int) lng * 1000000);
mc.animateTo(p);
}
}
public void onProviderDisabled(String provider) {
// required for interface, not used
}
public void onProviderEnabled(String provider) {
// required for interface, not used
}
public void onStatusChanged(String provider, int status, Bundle extras) {
// required for interface, not used
}
protected boolean isRouteDisplayed() {
return false;
}
These coordinates: lat = 32.08 lng = 35.84 are some spot in israel...
So..... What am i doing wrong ? Or what am i doing not right ? :P
Thanks!

I'd say that getLastKnownLocation is giving you that erroneous position for some reason. Your default of 32.08, 35.84 won't ever get reached because location will never be null. I'd suggest using the debugger to see which of your calls to getLastKnownLocation is getting hit, and what the value returned is.

I took my code and compared it to a working code from an example in the internet.
Not sure what solved the problem, but i definetly know that you should requestLocationUpdates after you finish to configure everything else.
Other people who encounter this problem - try taking a working code from the internet and comparing it step by step until it works on your app.

android locationlistener

I am tring to get the location from a service and its returning null, i dont know what could be the problem. Here my sample code below.
public void onStart(Intent intent, int startId) {
super.onStart(intent, startId);
locListener = new GpsLocationListener();
lm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 1000, 0,
locListener);
loc = locListener.getLocation();
showMessage("Service started");
if (loc != null) {
latitude = String.valueOf(loc.getLatitude());
longitude = String.valueOf(loc.getLongitude());
}
if (latitude != null && longitude != null) {
connectWebservice();
}
Log.i("trackmeservice", "service started");
}
here my loc is null. Any help will be apprecited thanks;

just check, whether your gps and internet working properly or not.
Add permissions to your manifest file
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.CONTROL_LOCATION_UPDATES"/>
above the Application tag