[android] Added saving/restoring the route if app was in navigaton/planing mode

android/src/com/mapswithme/maps/MwmActivity.java

@@ -520,6 +520,7 @@ public class MwmActivity extends BaseMwmFragmentActivity
     //  }
     //});
     //getWindow().getDecorView().addOnLayoutChangeListener(mVisibleRectMeasurer);
+    mTasks.add(new RestoreRouteTask());
   }
 
   private void initViews()
@@ -952,6 +953,9 @@ public class MwmActivity extends BaseMwmFragmentActivity
     if (mFilterController != null)
       mFilterController.onSaveState(outState);
 
+    if (!isChangingConfigurations())
+      RoutingController.get().saveRoute();
+
     super.onSaveInstanceState(outState);
   }
 
@@ -2314,4 +2318,15 @@ public class MwmActivity extends BaseMwmFragmentActivity
       return true;
     }
   }
+
+  private static class RestoreRouteTask implements MapTask
+  {
+
+    @Override
+    public boolean run(MwmActivity target)
+    {
+      RoutingController.get().restoreRoute();
+      return true;
+    }
+  }
 }

android/src/com/mapswithme/maps/routing/RoutingController.java

@@ -361,6 +361,21 @@ public class RoutingController implements TaxiManager.TaxiListener
         }).show();
   }
 
+  public void restoreRoute()
+  {
+    if (Framework.nativeHasSavedRoutePoints())
+    {
+      Framework.nativeLoadRoutePoints();
+      prepare(getStartPoint(), getEndPoint());
+    }
+  }
+
+  public void saveRoute()
+  {
+    if (isNavigating() || (isPlanning() && isBuilt()))
+      Framework.nativeSaveRoutePoints();
+  }
+
   public void prepare(@Nullable MapObject endPoint)
   {
     prepare(endPoint, false);