2 files changed, 27 insertions, 0 deletions
diff --git a/src/cgeo/geocaching/mapsforge/mfMapActivity.java b/src/cgeo/geocaching/mapsforge/mfMapActivity.java
index b878def..1e179dd 100644
--- a/src/cgeo/geocaching/mapsforge/mfMapActivity.java
+++ b/src/cgeo/geocaching/mapsforge/mfMapActivity.java
@@ -6,6 +6,7 @@ import android.app.Activity;
 import android.os.Bundle;
 import android.view.Menu;
 import android.view.MenuItem;
+import android.view.View;
 import cgeo.geocaching.mapcommon.MapBase;
 import cgeo.geocaching.mapcommon.cgeomap;
 import cgeo.geocaching.mapinterfaces.ActivityImpl;
@@ -93,4 +94,14 @@ public class mfMapActivity extends MapActivity implements ActivityImpl {
 	public boolean superOnPrepareOptionsMenu(Menu menu) {
 		return super.onPrepareOptionsMenu(menu);
 	}
+	
+	// close activity and open homescreen
+	public void goHome(View view) {
+		mapBase.goHome(view);
+	}
+
+	// open manual entry
+	public void goManual(View view) {
+		mapBase.goManual(view);
+	}
 }
diff --git a/src/cgeo/geocaching/mapsforge/mfMapView.java b/src/cgeo/geocaching/mapsforge/mfMapView.java
index a68e7c0..e463a26 100644
--- a/src/cgeo/geocaching/mapsforge/mfMapView.java
+++ b/src/cgeo/geocaching/mapsforge/mfMapView.java
@@ -1,6 +1,7 @@
 package cgeo.geocaching.mapsforge;
 
 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;
@@ -136,6 +137,21 @@ public class mfMapView extends MapView implements MapViewImpl {
 	public void setBuiltinScale(boolean b) {
 		setScaleBar(b);
 	}
+	
+	/**
+	 * Checks whether a given file is a valid map file.
+	 * 
+	 * @param file
+	 *            the path to the map file that should be tested.
+	 * @return true if the file is a valid map file, false otherwise.
+	 */
+	public static boolean isValidMapFile(String file) {
+		MapDatabase testDatabase = new MapDatabase();
+		boolean isValid = testDatabase.openFile(file);
+		testDatabase.closeFile();
+		return isValid;
+	}
+
 
 	@Override
 	public void setMapSource(cgSettings settings) {