Computing road between points

app/build.gradle

@@ -43,5 +43,6 @@ dependencies {
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
     implementation "androidx.fragment:fragment-ktx:1.5.5"
     implementation 'org.osmdroid:osmdroid-android:6.1.14'
+    implementation 'com.github.MKergall:osmbonuspack:6.9.0'
 
 }

app/src/main/java/uca/baptistearthur/geocaching/ui/fragment/Map.kt

@@ -19,6 +19,8 @@ import android.location.LocationListener
 import android.util.Log
 import android.widget.ProgressBar
 import androidx.activity.result.contract.ActivityResultContracts
+import org.osmdroid.bonuspack.routing.OSRMRoadManager
+import org.osmdroid.bonuspack.routing.RoadManager
 import org.osmdroid.config.IConfigurationProvider
 import org.osmdroid.library.BuildConfig
 import org.osmdroid.tileprovider.tilesource.TileSourceFactory
@@ -35,6 +37,7 @@ class Map : Fragment() {
     private lateinit var map : MapView
     private lateinit var spinner: ProgressBar
     private lateinit var  locationManager: LocationManager
+    private val userAgent = "RoadTrip"
 
     val defaultPoint = GeoPoint(48.8583, 2.2944)
     var isMapCentered = false;
@@ -54,7 +57,7 @@ class Map : Fragment() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        Configuration.getInstance().userAgentValue = "RoadTrip"
+        Configuration.getInstance().userAgentValue = userAgent;
 
     }
 
@@ -90,7 +93,7 @@ class Map : Fragment() {
         recenter.enableMyLocation()
         map.overlays.add(recenter);
 
-        val addMarker = AddMarkerOverlay()
+        val addMarker = AddMarkerOverlay(OSRMRoadManager(context, userAgent))
         map.overlays.add(addMarker);
 
     }

app/src/main/java/uca/baptistearthur/geocaching/ui/overlay/AddMarkerOverlay.kt

@@ -1,31 +1,56 @@
 package uca.baptistearthur.geocaching.ui.overlay
 
-import android.graphics.Rect
+import android.os.AsyncTask
 import android.util.Log
 import android.view.MotionEvent
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+import org.osmdroid.bonuspack.routing.Road
+import org.osmdroid.bonuspack.routing.RoadManager
 import org.osmdroid.util.GeoPoint
 import org.osmdroid.views.MapView
 import org.osmdroid.views.overlay.Overlay
+import org.osmdroid.views.overlay.Polyline
 
-class AddMarkerOverlay : Overlay() {
 
-    private var locations: MutableSet<GeoPoint> = mutableSetOf()
+class AddMarkerOverlay(val roadManager: RoadManager) : Overlay() {
 
+    private var locations: MutableSet<GeoPoint> = mutableSetOf()
+    private lateinit var roadOverlay: Polyline
     override fun onDoubleTap(e: MotionEvent?, mapView: MapView?): Boolean {
         Log.d("GeoMap", "Longpress")
         val proj = mapView?.projection;
         if(proj!=null){
-            val loc = proj.fromPixels(e?.x?.toInt()!!, e?.y?.toInt() !! ) as GeoPoint
+            val loc = proj.fromPixels(e?.x?.toInt()!!, e.y.toInt() ) as GeoPoint
             locations.add(loc)
-            val marker = PlaceMarker(mapView, locations)
+            val marker = PlaceMarker(mapView, locations, this)
             marker.position = loc
             marker.title = "Step " + locations.size
             mapView.overlays.add(marker)
-            mapView.invalidate()
+            computeRoad(mapView)
         }
         return true;
     }
 
+    fun computeRoad(mapView: MapView) {
+        mapView.overlays.remove(mapView.overlays.find { it is Polyline})
+        if (locations.size > 1) {
+            CoroutineScope(Dispatchers.IO).launch {
+                val road = roadManager.getRoad(ArrayList(locations))
+                withContext(Dispatchers.Main) {
+                    roadOverlay = RoadManager.buildRoadOverlay(road)
+                    roadOverlay.width=10.0f;
+                    mapView.overlays.add(roadOverlay)
+                    mapView.invalidate()
+                }
+            }
+        }
+    }
+
+
+
 
 
 }

app/src/main/java/uca/baptistearthur/geocaching/ui/overlay/PlaceMarker.kt

@@ -1,17 +1,20 @@
 package uca.baptistearthur.geocaching.ui.overlay
 
 import android.view.MotionEvent
+import org.osmdroid.bonuspack.routing.OSRMRoadManager
+import org.osmdroid.bonuspack.routing.RoadManager
 import org.osmdroid.util.GeoPoint
 import org.osmdroid.views.MapView
 import org.osmdroid.views.overlay.Marker
 
-class PlaceMarker(val mapView: MapView, val locations: MutableSet<GeoPoint>) : Marker(mapView) {
+class PlaceMarker(val mapView: MapView, val locations: MutableSet<GeoPoint>, val parent : AddMarkerOverlay) : Marker(mapView) {
 
     override fun onLongPress(e: MotionEvent?, mapView: MapView?): Boolean {
-        if(this.hitTest(e, mapView)) {
+        if(mapView!=null && this.hitTest(e, mapView)) {
             locations.remove(this.position)
             this.closeInfoWindow()
-            mapView?.overlays?.remove(this)
+            mapView.overlays.remove(this)
+            parent.computeRoad(mapView);
             return true
         }
         return false

settings.gradle

@@ -3,7 +3,6 @@ pluginManagement {
         gradlePluginPortal()
         google()
         mavenCentral()
-
     }
 }
 dependencyResolutionManagement {
@@ -11,6 +10,7 @@ dependencyResolutionManagement {
     repositories {
         google()
         mavenCentral()
+        maven { url "https://jitpack.io" }
     }
 }
 rootProject.name = "Geocaching"