dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version"
    implementation 'com.android.support:appcompat-v7:26.1.0'
    implementation 'com.google.android.gms:play-services-maps:11.8.0'
    implementation 'com.google.android.gms:play-services-location:11.8.0'
    testImplementation 'junit:junit:4.12'
}

    Kotlin Google Map
    Map Fixed Location

    
    AIzaSyCmTF-n-REPLACE-WITH-YOUR-KEY

package example.javatpoint.com.kotlingooglemap

import android.os.Bundle
import android.support.v7.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.Marker
import com.google.android.gms.maps.model.MarkerOptions

class MapsActivity : AppCompatActivity(), OnMapReadyCallback,  GoogleMap.OnMarkerClickListener {

    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)
    }

    /**
     * Manipulates the map once available.
     * This callback is triggered when the map is ready to be used.
     * This is where we can add markers or lines, add listeners or move the camera. In this case,
     * we just add a marker near Sydney, Australia.
     * If Google Play services is not installed on the device, the user will be prompted to install
     * it inside the SupportMapFragment. This method will only be triggered once the user has
     * installed Google Play services and returned to the app.
     */
    override fun onMapReady(googleMap: GoogleMap) {

        mMap = googleMap
        // Add a marker in India and move the camera
        val myLocation = LatLng(20.5937, 78.9629)
        mMap.addMarker(MarkerOptions().position(myLocation).title("Marker in India"))
        mMap.moveCamera(CameraUpdateFactory.newLatLng(myLocation))
        mMap.uiSettings.isZoomControlsEnabled = true
    }
    override fun onMarkerClick(p0: Marker?) = false

}

package example.javatpoint.com.kotlingooglemap

import android.Manifest
import android.content.pm.PackageManager
import android.os.Build
import android.os.Bundle
import android.support.v4.app.ActivityCompat
import android.support.v4.app.FragmentActivity
import android.widget.Toast
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.Marker
import com.google.android.gms.maps.model.MarkerOptions

class MapsActivity : FragmentActivity(), OnMapReadyCallback, GoogleMap.OnMarkerClickListener  {

    private lateinit var mMap: GoogleMap

    companion object {
        private val MY_PERMISSION_FINE_LOCATION = 101
    }
    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

        // Add a marker in India and move the camera
        val india = LatLng(20.5937, 78.9629)
        mMap.addMarker(MarkerOptions().position(india).title("Marker in India"))
        mMap.moveCamera(CameraUpdateFactory.newLatLng(india))

        if (ActivityCompat.checkSelfPermission(this,
                        Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
                 mMap.isMyLocationEnabled = true
        }
        else {//condition for Marshmello and above
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                requestPermissions(arrayOf(Manifest.permission.ACCESS_FINE_LOCATION), MY_PERMISSION_FINE_LOCATION)
            }
        }
        mMap.setOnMarkerClickListener(this)
    }
    override fun onMarkerClick(p0: Marker?) = false
    
    override fun onRequestPermissionsResult(requestCode: Int, permissions: Array, grantResults: IntArray) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults)
        when (requestCode) {
            MY_PERMISSION_FINE_LOCATION -> if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {//permission to access location grant
                if (ActivityCompat.checkSelfPermission(this,
                                Manifest.permission.ACCESS_FINE_LOCATION) == PackageManager.PERMISSION_GRANTED) {
                    mMap.isMyLocationEnabled = true
                }
            }
            //permission to access location denied
            else {
                Toast.makeText(applicationContext, "This app requires location permissions to be granted", Toast.LENGTH_LONG).show()
                finish()
            }
        }
    }

}