5 files changed, 25 insertions, 7 deletions
diff --git a/main/res/values/strings.xml b/main/res/values/strings.xml
index ead1b80..292206e 100644
--- a/main/res/values/strings.xml
+++ b/main/res/values/strings.xml
@@ -218,7 +218,7 @@
   <string name="warn_search_help_tb">Enter the code for a trackable. For example \"TB29QMZ\".</string>
   <string name="warn_log_text_fill">Please fill in text for your log.</string>
   <string name="warn_load_images">c:geo failed to load images.</string>
-
+  <string name="warn_invalid_mapfile">The selected map file is not a valid mapsforge version 0.2.4 map file.\nOffline maps are not available.</string>
 
   <string name="info_log_posted">c:geo successfully submitted the log.</string>
   <string name="info_log_saved">c:geo successfully saved the log.</string>
diff --git a/main/src/cgeo/geocaching/Settings.java b/main/src/cgeo/geocaching/Settings.java
index 872c3f6..7fdf651 100644
--- a/main/src/cgeo/geocaching/Settings.java
+++ b/main/src/cgeo/geocaching/Settings.java
@@ -5,6 +5,7 @@ import cgeo.geocaching.enumerations.LiveMapStrategy.Strategy;
 import cgeo.geocaching.geopoint.Geopoint;
 import cgeo.geocaching.maps.MapProviderFactory;
 import cgeo.geocaching.maps.interfaces.MapProvider;
+import cgeo.geocaching.maps.mapsforge.MapsforgeMapProvider;
 import cgeo.geocaching.utils.CryptUtils;
 
 import org.apache.commons.lang3.StringUtils;
@@ -441,6 +442,10 @@ public final class Settings {
         return commitResult;
     }
 
+    public static boolean isValidMapFile(final String mapFileIn) {
+        return MapsforgeMapProvider.isValidMapFile(mapFileIn);
+    }
+
     public static coordInputFormatEnum getCoordInputFormat() {
         return coordInputFormatEnum.fromInt(sharedPrefs.getInt(KEY_COORD_INPUT_FORMAT, 0));
     }
diff --git a/main/src/cgeo/geocaching/cgeoinit.java b/main/src/cgeo/geocaching/cgeoinit.java
index 6493582..2269ad7 100644
--- a/main/src/cgeo/geocaching/cgeoinit.java
+++ b/main/src/cgeo/geocaching/cgeoinit.java
@@ -895,6 +895,9 @@ public class cgeoinit extends AbstractActivity {
             if (resultCode == RESULT_OK) {
                 if (data.hasExtra("mapfile")) {
                     Settings.setMapFile(data.getStringExtra("mapfile"));
+                    if (!Settings.isValidMapFile(Settings.getMapFile())) {
+                        showToast(res.getString(R.string.warn_invalid_mapfile));
+                    }
                 }
             }
             initMapfileEdittext(true);
diff --git a/main/src/cgeo/geocaching/maps/mapsforge/MapsforgeMapProvider.java b/main/src/cgeo/geocaching/maps/mapsforge/MapsforgeMapProvider.java
index 1929b7b..2e0cc45 100644
--- a/main/src/cgeo/geocaching/maps/mapsforge/MapsforgeMapProvider.java
+++ b/main/src/cgeo/geocaching/maps/mapsforge/MapsforgeMapProvider.java
@@ -12,6 +12,8 @@ import cgeo.geocaching.maps.interfaces.GeoPointImpl;
 import cgeo.geocaching.maps.interfaces.MapProvider;
 import cgeo.geocaching.maps.interfaces.OtherCachersOverlayItemImpl;
 
+import org.mapsforge.android.maps.MapDatabase;
+
 import android.app.Activity;
 import android.content.Context;
 import android.content.res.Resources;
@@ -91,4 +93,8 @@ public class MapsforgeMapProvider implements MapProvider {
         return baseItem;
     }
 
+    public static boolean isValidMapFile(String mapFileIn) {
+        return MapDatabase.isValidMapFile(mapFileIn);
+    }
+
 }
diff --git a/main/src/cgeo/geocaching/maps/mapsforge/MapsforgeMapView.java b/main/src/cgeo/geocaching/maps/mapsforge/MapsforgeMapView.java
index d66088e..048f7a2 100644
--- a/main/src/cgeo/geocaching/maps/mapsforge/MapsforgeMapView.java
+++ b/main/src/cgeo/geocaching/maps/mapsforge/MapsforgeMapView.java
@@ -1,5 +1,6 @@
 package cgeo.geocaching.maps.mapsforge;
 
+import cgeo.geocaching.R;
 import cgeo.geocaching.Settings;
 import cgeo.geocaching.maps.CachesOverlay;
 import cgeo.geocaching.maps.OtherCachersOverlay;
@@ -16,7 +17,6 @@ import cgeo.geocaching.maps.interfaces.OverlayImpl.overlayType;
 import cgeo.geocaching.utils.Log;
 
 import org.mapsforge.android.maps.GeoPoint;
-import org.mapsforge.android.maps.MapDatabase;
 import org.mapsforge.android.maps.MapView;
 import org.mapsforge.android.maps.MapViewMode;
 import org.mapsforge.android.maps.Overlay;
@@ -30,6 +30,7 @@ import android.util.AttributeSet;
 import android.view.GestureDetector;
 import android.view.GestureDetector.SimpleOnGestureListener;
 import android.view.MotionEvent;
+import android.widget.Toast;
 
 public class MapsforgeMapView extends MapView implements MapViewImpl {
     private GestureDetector gestureDetector;
@@ -170,11 +171,14 @@ public class MapsforgeMapView extends MapView implements MapViewImpl {
                 setMapViewMode(MapViewMode.OPENCYCLEMAP_TILE_DOWNLOAD);
                 break;
             case MapsforgeMapProvider.OFFLINE:
-                if (MapDatabase.isValidMapFile(Settings.getMapFile())) {
-                    setMapViewMode(MapViewMode.CANVAS_RENDERER);
-                    super.setMapFile(Settings.getMapFile());
-                } else {
-                    setMapViewMode(MapViewMode.MAPNIK_TILE_DOWNLOAD);
+                setMapViewMode(MapViewMode.CANVAS_RENDERER);
+                super.setMapFile(Settings.getMapFile());
+                if (!Settings.isValidMapFile(Settings.getMapFile())) {
+                    Toast.makeText(
+                            getContext(),
+                            getContext().getResources().getString(R.string.warn_invalid_mapfile),
+                            Toast.LENGTH_LONG)
+                            .show();
                 }
                 break;
             default: