Tomtom Maps sdk for android failed to load tile

Question

I'm trying to add TomTom maps to my android application that is built with Kotlin, but it gives me the error Tomtom Maps SDK for android failed to load tile and shows an empty map as shown in the image below :

And here are my files and detailed configurations I'm using:

• In the project level Gradle file I have :

    allprojects {
    repositories {
        google()
        jcenter()
        maven {
            url "https://maven.tomtom.com:8443/nexus/content/repositories/releases/"
        }
    }
}

• In the app level Gradle file I have :

    dependencies {
    implementation("com.tomtom.online:sdk-maps:2.4244")
}

• And I've added the APK to the AndroidManifests file :

    <meta-data
        android:name="OnlineMaps.Key"
        android:value="<my-Key-here>" />

• Also, the map fragment is added to the .XML files :

<?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=".MapActivity">

    <fragment
        android:id="@+id/mapFragment"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:name="com.tomtom.online.sdk.map.MapFragment"
        />


</androidx.constraintlayout.widget.ConstraintLayout>

• And finally, here is the Kotlin code used to start the map :

    //lateinit late initialization of non-null type variables
    private lateinit var map: TomtomMap
    private lateinit var fusedLocationClient: FusedLocationProviderClient
    private lateinit var lastLocation: Location

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_map)
        val mapFragment = supportFragmentManager
            .findFragmentById(R.id.mapFragment) as MapFragment
        mapFragment.getAsyncMap(this)
        fusedLocationClient = LocationServices.getFusedLocationProviderClient(this)

    }


    companion object {
        private const val LOCATION_PERMISSION_REQUEST_CODE = 101
    }
    private fun setUpMap() {
        if (ActivityCompat.checkSelfPermission(this,
                android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this,
                arrayOf(android.Manifest.permission.ACCESS_FINE_LOCATION), LOCATION_PERMISSION_REQUEST_CODE)
            return
        }
        map.isMyLocationEnabled = true
        fusedLocationClient.lastLocation.addOnSuccessListener(this) {
                location ->
            if (location != null){
                lastLocation = location
                val currentLatLng = LatLng(location.latitude, location.longitude)
                val balloon = SimpleMarkerBalloon("You are Here")
                map.addMarker(MarkerBuilder(currentLatLng).markerBalloon(balloon))
                map.centerOn(CameraPosition.builder(currentLatLng).zoom(7.0).build())

            }

        }
    }


    override fun onMapReady(@NonNull tomtomMap: TomtomMap) {
        this.map = tomtomMap
        setUpMap()
    }

Answer 1

Two possible points to check:

• Your API key is not valid. Please check your API key by calling a raw TomTom Maps endpoint: https://api.tomtom.com/map/1/tile/basic/main/0/0/0.png?key=your_api_key and if you are not able to see the map tile image - register your new API key by going to TomTom Developer Portal and check again.

• Your API key is placed in the wrong place inside AndroidManifest.xml file. Make sure that it's placed inside the <application> tag, next to <activity> tag.