fix(routes): forward lifecycle methods and re-bind map3DView in Java and Kotlin RoutesActivity to prevent blank/white map rendering

Author: dkhawk

Maps3DSamples/ApiDemos/java-app/src/main/java/com/example/maps3djava/routes/RoutesActivity.java

@@ -126,6 +126,11 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_routes);
 
+        // Re-bind map3DView to the new active instance in activity_routes.xml and forward lifecycle
+        map3DView = findViewById(R.id.map3dView);
+        map3DView.onCreate(savedInstanceState);
+        map3DView.getMap3DViewAsync(this);
+
         // Configure custom toolbar
         MaterialToolbar toolbar = findViewById(R.id.top_bar);
         toolbar.setTitle(getString(R.string.feature_title_routes_api));

Maps3DSamples/ApiDemos/kotlin-app/src/main/java/com/example/maps3dkotlin/routes/RoutesActivity.kt

@@ -113,6 +113,11 @@ class RoutesActivity : SampleBaseActivity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_routes)
 
+        // Re-bind map3DView to the new active instance in activity_routes.xml and forward lifecycle
+        map3DView = findViewById(R.id.map3dView)
+        map3DView.onCreate(savedInstanceState)
+        map3DView.getMap3DViewAsync(this)
+
         // Override toolbar back action
         findViewById<com.google.android.material.appbar.MaterialToolbar>(R.id.top_bar).apply {
             title = getString(R.string.feature_title_routes_api)