Hey, I am *NOT *android developer proffesional but I tried to do something similar to what you are asking about so I think I might have an answer for you. My offer for you is to simply use Criteria <https://developer.android.com/reference/android/location/Criteria.html>. You can use it to get the BEST AVILABLE provider without checking it your self.
*How to use?* 1. create new Criteria <https://developer.android.com/reference/android/location/Criteria.html> object. 2. define your criteria needs. 3. get LocationManager <https://developer.android.com/reference/android/location/LocationManager.html> object. 4. use getBestProvider <https://developer.android.com/reference/android/location/LocationManager.html#getBestProvider(android.location.Criteria, boolean)>method On Thursday, January 26, 2017 at 9:28:58 AM UTC+2, Fhahroz Iqbal wrote: > > I am trying to develop an android application that gets the device > latitude and longitude using GPS or Network providers, whichever is > available for the process. The code works perfectly fine when the device's > GPS is on but unfortunately it never works when the device's GPS is > switched off. > > > I want to get the device's latitude and longitude based on the available > providers, for example; if device's GPS is on it should get the device's > latitude and longitude using GPS provider and if the GPS is switched off it > should get the device's latitude and longitude using the network provider. > In my case the network provider always returns false and only works when > the device's GPS is switched on where as it should not bother about the > device GPS to be on or off it should simply get the latitude and longitude > based on network provider. > > > I have used the fused API from Google but even that has the same issue, I > can only get the latitude and longitude using GPS provider and when I turn > off the device's GPS it never returns the required latitude and longitude > using network provider because network provider and GPS providers both > returns false when device's GPS is switched off. > > > Both GPS and network provider is working on device's GPS, I want to > separate their process respectively. > > > I am using following permissions and features > > <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.READ_PHONE_STATE" /> > <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /> > <uses-permission android:name="android.permission.LOCATION_HARDWARE" /> > <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" /> > <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" /> > <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" /> > <uses-feature android:name="android.hardware.location" > android:required="true"/> > <uses-feature android:name="android.hardware.location.network" > android:required="true"/> > <uses-feature android:name="android.hardware.location.gps" > android:required="true"/> > > Following is my complete Java code that only works when device's GPS is on, > in both GPS and network cases. > > package com.example.administrator.locationgetter; > > import android.Manifest; > import android.app.Activity; > import android.content.pm.PackageManager; > import android.location.Location; > import android.location.LocationListener; > import android.location.LocationManager; > import android.os.Bundle; > import android.support.design.widget.FloatingActionButton; > import android.support.design.widget.Snackbar; > import android.support.v4.app.ActivityCompat; > import android.support.v7.app.AppCompatActivity; > import android.support.v7.widget.Toolbar; > import android.util.Log; > import android.view.View; > import android.view.Menu; > import android.view.MenuItem; > import android.widget.Toast; > > public class MainActivity extends Activity { > public static final int MY_PERMISSIONS_REQUEST = 0; > > LocationManager locationManager; > > private LocationListener mLocationListener; > > > private void showStatus(String st) > { > Toast.makeText(MainActivity.this,st,Toast.LENGTH_SHORT).show(); > } > private LocationListener createLocationListener() { > return new LocationListener() { > @Override > public void onLocationChanged(Location location) { > // Called when a new location is found by the network > location provider. > Toast.makeText(MainActivity.this,"accuracy: " + > location.getAccuracy() + " lat: " + location.getLatitude() + " lon: " + > location.getLongitude(),Toast.LENGTH_SHORT).show(); > } > > public void onStatusChanged(String provider, int status, Bundle > extras) { > showStatus(provider + " -- " + status); > } > > public void onProviderEnabled(String provider) { > showStatus(provider + " -- " + "ENABLED!"); > } > > public void onProviderDisabled(String provider) { > showStatus(provider + " -- " + "DISABLED!"); > } > > > }; > } > > @Override > protected void onCreate(Bundle savedInstanceState) { > > super.onCreate(savedInstanceState); > setContentView(R.layout.activity_main); > > Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); > //setSupportActionBar(toolbar); > > mLocationListener = createLocationListener(); > FloatingActionButton fab = (FloatingActionButton) > findViewById(R.id.fab); > fab.setOnClickListener(new View.OnClickListener() { > @Override > public void onClick(View view) { > Snackbar.make(view, "Replace with your own action", > Snackbar.LENGTH_LONG) > .setAction("Action", null).show(); > } > }); > } > > @Override > public boolean onCreateOptionsMenu(Menu menu) { > // Inflate the menu; this adds items to the action bar if it is > present. > getMenuInflater().inflate(R.menu.menu_main, menu); > return true; > } > > @Override > public boolean onOptionsItemSelected(MenuItem item) { > > int id = item.getItemId(); > > //noinspection SimplifiableIfStatement > if (id == R.id.action_settings) { > return true; > } > > return super.onOptionsItemSelected(item); > } > > @Override > public void onRequestPermissionsResult(int requestCode, > String permissions[], int[] grantResults) { > switch (requestCode) { > case MY_PERMISSIONS_REQUEST: { > // If request is cancelled, the result arrays are empty. > if (grantResults.length > 0 > && grantResults[0] == > PackageManager.PERMISSION_GRANTED) { > locationManager = (LocationManager) > this.getSystemService(LOCATION_SERVICE); > > locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, > 0, mLocationListener); > > } else { > Toast.makeText(MainActivity.this, "So sad! Give me the > damn permissions!", Toast.LENGTH_SHORT).show(); > > } > return; > } > } > } > > public void btnLocation(View v) { > > if ((ActivityCompat.checkSelfPermission(this, > Manifest.permission.ACCESS_COARSE_LOCATION) != > PackageManager.PERMISSION_GRANTED) || > (ActivityCompat.checkSelfPermission(this, > Manifest.permission.ACCESS_FINE_LOCATION) != > PackageManager.PERMISSION_GRANTED )){ > showStatus("Give me the permissions man!"); > ActivityCompat.requestPermissions(this, > new String[]{ Manifest.permission.ACCESS_COARSE_LOCATION, > Manifest.permission.ACCESS_FINE_LOCATION}, > MY_PERMISSIONS_REQUEST); > } > else > { > showStatus("Already have permission"); > locationManager = (LocationManager) > this.getSystemService(LOCATION_SERVICE); > String locationProvider = LocationManager.NETWORK_PROVIDER; > Location location = > locationManager.getLastKnownLocation(locationProvider); > if(location != null) > { > Toast.makeText(MainActivity.this,"accuracy: " + > location.getAccuracy() + " lat: " + location.getLatitude() + " lon: " + > location.getLongitude(),Toast.LENGTH_SHORT).show(); > } > > locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, > 0, mLocationListener); > > } > } > public void btnLocation1(View v) { > > if ((ActivityCompat.checkSelfPermission(this, > Manifest.permission.ACCESS_COARSE_LOCATION) != > PackageManager.PERMISSION_GRANTED) || > (ActivityCompat.checkSelfPermission(this, > Manifest.permission.ACCESS_FINE_LOCATION) != > PackageManager.PERMISSION_GRANTED )){ > showStatus("Give me the permissions man!"); > ActivityCompat.requestPermissions(this, > new String[]{ Manifest.permission.ACCESS_COARSE_LOCATION, > Manifest.permission.ACCESS_FINE_LOCATION}, > MY_PERMISSIONS_REQUEST); > } > else > { > showStatus("Already have permission"); > locationManager = (LocationManager) > this.getSystemService(LOCATION_SERVICE); > String locationProvider = LocationManager.GPS_PROVIDER; > Location location = > locationManager.getLastKnownLocation(locationProvider); > if(location != null) > { > Toast.makeText(MainActivity.this,"accuracy: " + > location.getAccuracy() + " lat: " + location.getLatitude() + " lon: " + > location.getLongitude(),Toast.LENGTH_SHORT).show(); > } > > locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, > mLocationListener); > > } > } > } > > > I have tested the application on KitKat, Lollipop and Marshmallow, all > have the same results. > > > If you download the baidu maps and launch the app it will ask you to grant > the permission for location access, just make sure that your location is > turned off and simply grant the location permission to baidu map you will > notice that it will point your location on baidu maps even if your gps or > location service is off. > > > > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. 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