Location

Location:
In Android, to retrieve location, we need to use Google-based location APIs for Android.

To work with any Google-based APIs, we need to have Google play services as part of our project. It is available as the following dependency for location.

compile ‘com.google.android.gms:play-services-location:{version}’

Refer the below link to add Google Play services to project.

https://developers.google.com/android/guides/setup

If we are using Google Play services in our app, we need to check Google Play services in mobile is up-to-date or not.

Here, to retrieve location, we are using a library from the below link.

https://github.com/akhgupta/Android-EasyLocation

All the instructions to implement that library are available from the same link.

Location can be determined by using 2 double values. They are latitude and longitude. For every place, there are unique latitude and longitude values.

Ex: Hyderabad – 17.3850 , 78.4867

Also, we need permission for location must be enabled by the user.
The permission for location is either of the 2 following.

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

also we need internet permission
<uses-permission android:name=”android.permission.INTERNET” />

Steps to implement above library:

1) Add dependencies for library and Google Play services
2) Extend our activity with EasyLocationAppCompatActivity and override methods
3) In onResume, write following code

LocationRequest locationRequest = new LocationRequest()
.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY)
.setInterval(5000)
.setFastestInterval(5000);

EasyLocationRequest easyLocationRequest = new EasyLocationRequestBuilder()
.setLocationRequest(locationRequest)
.setFallBackToLastLocationTime(3000)
.build();

To get location one time
requestSingleLocationFix(easyLocationRequest);

To get location continuously
requestLocationUpdates(easyLocationRequest);

Whenever we receive a location update, we have a overridden method called in our Activity. That is

@Override
public void onLocationReceived(Location location) {
double latitude = location.getLatitude();
double longitude = location.getLongitude();
}

Create an Application to work with the above given library to retrieve current location