Android Development : Aksing user to turn on the GPS

 Dialog box : Turn on the GPS 

    Recently, in one of my android project work, I needed GPS location of the user device. I wanted it to look like the dialog box which appears in the Google Maps when we turn in on.

This is how Google asks user permission for GPS access:

So, after referring the Google's official documentation and some more modifications following code worked like a charm.

I had integrated the map and the code somewhat goes like this:

First you have to add manifest permissions:

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

Then edit your MainActivity like this :

public class MainActivity extends AppCompatActivity implements
        ConnectionCallbacks, OnConnectionFailedListener, LocationListener{
GoogleApiClient mGoogleApiClient;
@Override
protected void onCreate(Bundle savedInstanceState) {
mGoogleApiClient = new GoogleApiClient.Builder(this)
        .addApi(LocationServices.API)
        .addConnectionCallbacks(this)
        .addOnConnectionFailedListener(this)
        .build();
mGoogleApiClient.connect();
enable_loc(); //This will call the actual methods to implement the dialog box
}
}

//ask to turn on the gps
private void enableLoc() {
    LocationRequest locationRequest = LocationRequest.create();
    locationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
    locationRequest.setInterval(30 * 1000);
    locationRequest.setFastestInterval(5 * 1000);
    LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder()
            .addLocationRequest(locationRequest);

    builder.setAlwaysShow(true);
    PendingResult result =
            LocationServices.SettingsApi.checkLocationSettings(mGoogleApiClient, builder.build());
    result.setResultCallback(new ResultCallback() {
        @Override
        public void onResult(LocationSettingsResult result) {
            final Status status = result.getStatus();
            Log.d("status.getStatusCode()",String.valueOf(status.getStatusCode()));
            switch (status.getStatusCode()) {
                case LocationSettingsStatusCodes.RESOLUTION_REQUIRED:
                    try {
                        // Show the dialog by calling startResolutionForResult(),
                        // and check the result in onActivityResult().
                        status.startResolutionForResult(
                                MainActivity.this, REQUEST_LOCATION);
                    } catch (IntentSender.SendIntentException e) {
                        // Ignore the error.
                    }
                    break;
            }
        }
    });

}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {

    switch (requestCode) {
        case REQUEST_LOCATION:
            switch (resultCode) {
                case Activity.RESULT_CANCELED: {
                    // The user was asked to change settings, but chose not to
                    finish();
                    break;
                }
                case Activity.RESULT_OK:
                    //write here what you want to do next
                    break;


                default: {
                    break;
                }
            }
            break;
    }

}

I hope this code helps you well. If you have any doubts, please feel free to comment down below.