To create a map on Android, add MapLibre Native to the dependencies section of your app’s build.gradle file. Optionally, add the MapLibre Annotation Plugin to add a marker to the map: 
dependencies {
    implementation 'org.maplibre.gl:android-sdk:11.0.0'
    implementation 'org.maplibre.gl:android-plugin-annotation-v9:3.0.0' // optional import for adding a marker
}
Import assets for the Radar logo and optionally for a marker. You can download assets here. Then, add a MapView with the Radar logo to your layout: 
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <org.maplibre.android.maps.MapView
        android:id="@+id/mapView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        />

    <ImageView
        android:id="@+id/overlayImageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:src="@drawable/radar_logo"
        app:layout_constraintBottom_toBottomOf="@id/mapView"
        app:layout_constraintStart_toStartOf="@id/mapView"
        android:layout_marginBottom="10dp"
        android:layout_marginStart="10dp" />

</androidx.constraintlayout.widget.ConstraintLayout>
Finally, add a MapView in your Activity with a Radar style URL that includes your publishable key: 
import android.os.Bundle
import android.view.Gravity
import android.view.LayoutInflater
import androidx.appcompat.app.AppCompatActivity
import androidx.core.content.res.ResourcesCompat
import androidx.core.graphics.drawable.toBitmap

import org.maplibre.android.MapLibre
import org.maplibre.android.camera.CameraPosition
import org.maplibre.android.geometry.LatLng
import org.maplibre.android.maps.MapLibreMap
import org.maplibre.android.maps.MapView

// optional import for adding a marker
import org.maplibre.android.plugins.annotation.SymbolManager
import org.maplibre.android.plugins.annotation.SymbolOptions

const val MARKER_NAME = "radar-marker"

class MainActivity : AppCompatActivity() {

    private lateinit var mapView: MapView
    private lateinit var mapLibreMap: MapLibreMap

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        // create a map
        val style = "radar-default-v1"
        val publishableKey = "prj_live_pk_..."
        val styleURL = "https://api.radar.io/maps/styles/$style?publishableKey=$publishableKey"

        MapLibre.getInstance(this)

        val inflater = LayoutInflater.from(this)
        val rootView = inflater.inflate(R.layout.activity_main, null)
        setContentView(rootView)

        mapView = rootView.findViewById(R.id.mapView)

        mapView.getMapAsync { map ->
            mapLibreMap = map

            // add the Radar logo
            map.uiSettings.isLogoEnabled = false

            map.uiSettings.attributionGravity = Gravity.RIGHT + Gravity.BOTTOM
            map.uiSettings.setAttributionMargins(0, 0, 24, 24)

            map.setStyle(styleURL) {style ->

                // optionally add a marker to the map on style load
                val infoIconDrawable = ResourcesCompat.getDrawable(
                    this.resources,
                    // use imported marker resource
                    R.drawable.default_marker,
                    null
                )!!

                // create marker icon bmp
                val bitmapMarker = infoIconDrawable.toBitmap()
                style.addImage(MARKER_NAME, bitmapMarker)

                val symbolManager = SymbolManager(mapView, map, style)

                // disable symbol collisions to draw over map style symbols like POIs and labels
                symbolManager.iconAllowOverlap = true
                symbolManager.iconIgnorePlacement = true

                val symbol = symbolManager.create(
                    SymbolOptions()
                        .withLatLng(LatLng(40.7342,-73.9911))
                        .withIconImage(MARKER_NAME)
                        .withIconSize(1.25f)
                        .withIconAnchor("bottom")
                )
                symbolManager.update(symbol)

                // set camera position to symbol latlng
                map.cameraPosition = CameraPosition.Builder()
                    .target(symbol.latLng)
                    .zoom(11.0)
                    .build()
            }
        }
    }

    override fun onStart() {
        super.onStart()
        mapView.onStart()
    }

    override fun onResume() {
        super.onResume()
        mapView.onResume()
    }

    override fun onPause() {
        super.onPause()
        mapView.onPause()
    }

    override fun onStop() {
        super.onStop()
        mapView.onStop()
    }

    override fun onLowMemory() {
        super.onLowMemory()
        mapView.onLowMemory()
    }

    override fun onDestroy() {
        super.onDestroy()
        mapView.onDestroy()
    }

    override fun onSaveInstanceState(outState: Bundle) {
        super.onSaveInstanceState(outState)
        mapView.onSaveInstanceState(outState)
    }
}
Adding a Radar logo to the map is required in our Terms of Use.