How to use Location API in Android to track your current location using Kotlin?

This example demonstrates how to use Location API in Android to track your current location using Kotlin.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_maps.xml.

<?xml version="1.0" encoding="utf-8"?>
<fragment xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:tools="http://schemas.android.com/tools"
   android:id="@+id/map"
   android:name="com.google.android.gms.maps.SupportMapFragment"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   tools:context=".MapsActivity" />

Step 3 − Add the following code to src/MapsActivity.kt

import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import com.google.android.gms.maps.CameraUpdateFactory
import com.google.android.gms.maps.GoogleMap
import com.google.android.gms.maps.OnMapReadyCallback
import com.google.android.gms.maps.SupportMapFragment
import com.google.android.gms.maps.model.LatLng
import com.google.android.gms.maps.model.MarkerOptions
class MapsActivity : AppCompatActivity(), OnMapReadyCallback {
   private lateinit var mMap: GoogleMap
   override fun onCreate(savedInstanceState: Bundle?) {
      super.onCreate(savedInstanceState)
      setContentView(R.layout.activity_maps)
      // Obtain the SupportMapFragment and get notified when the map is ready to be used.
      val mapFragment = supportFragmentManager
      .findFragmentById(R.id.map) as SupportMapFragment
      mapFragment.getMapAsync(this)
   }
   override fun onMapReady(googleMap: GoogleMap) {
      mMap = googleMap
      val myCurrentLocation = LatLng(13.0827, 80.2707)
      mMap.addMarker(MarkerOptions().position(myCurrentLocation).title("This is My current          Location"))
      mMap.moveCamera(CameraUpdateFactory.newLatLng(myCurrentLocation))
   }
}

Step 4 − Add the following code to androidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.q11">
   <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
   <application
      android:allowBackup="true"
      android:icon="@mipmap/ic_launcher"
      android:label="@string/app_name"
      android:roundIcon="@mipmap/ic_launcher_round"
      android:supportsRtl="true"
      android:theme="@style/AppTheme">
      <activity android:name=".MainActivity">
         <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
         </intent-filter>
      </activity>
      <meta-data
         android:name="com.google.android.geo.API_KEY"
         android:value="AIzaSyCiSh4VnnI1jemtZTytDoj2X7Wl6evey30" />
   </application>
</manifest>

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click the Run icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen