This blog is about how to show Popup for enable Location setting.

1. Add below dependency to app gradle file.

compile 'com.google.android.gms:play-services:9.6.1'

2. Implement GoogleApiClient.ConnectionCallbacks, GoogleApiClient.OnConnectionFailedListener into your fragment/activity.

3. Create Instance of GoogleApiClient.

private GoogleApiClient mGoogleApiClient;

4. initialize GoogleApiClient.

  mGoogleApiClient = new GoogleApiClient.Builder(this)
                .addApi(LocationServices.API)
                .addConnectionCallbacks(this)
                .addOnConnectionFailedListener(this)
                .build();

5. Create LocationRequest.

 LocationRequest locationRequest = LocationRequest.create()
                .setInterval(10 * 60 * 1000) // every 10 minutes
                .setExpirationDuration(10 * 1000) // After 10 seconds
                .setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
        LocationSettingsRequest.Builder builder;


        builder = new LocationSettingsRequest.Builder()
                .addLocationRequest(locationRequest);
        // set builder to always true (Shows the dialog after never operation too)
        builder.setAlwaysShow(true);

6. Create Pending Request.

 PendingResult result = LocationServices.SettingsApi.checkLocationSettings(mGoogleApiClient, builder.build());

7. Set Callback to result.

   result.setResultCallback(new ResultCallback() {

            @Override
            public void onResult(Result result) {
                final Status status = result.getStatus();
//                final LocationSettingsStates state = result.getStatus().ge
                switch (status.getStatusCode()) {
                    case LocationSettingsStatusCodes.SUCCESS:
                        // All location settings are satisfied. The client can initialize location
                        break;
                    case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                        // Location settings are not satisfied. But could be fixed by showing the user
                        // a dialog.
                        try {
                            status.startResolutionForResult(SplashActivity.this,100);
                        } catch (IntentSender.SendIntentException e) {
                            e.printStackTrace();
                        }
                        break;
                    case LocationSettingsStatusCodes.SETTINGS_CHANGE_UNAVAILABLE:
                        // Location settings are not satisfied. However, we have no way to fix the
                        // settings so we won't show the dialog.
                        break;
                }
            }
        });

8. Add Location permission in manifest.

  <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

*Make sure you have implement request permission for Marshmallow and above OS.

Happy Coding :D