<NME> MapUtils.java
<BEF> ADDFILE
<MSG> add link to map docs to invalid mapfile message

<DFF> @@ -0,0 +1,25 @@
+package cgeo.geocaching.utils;
+
+import cgeo.geocaching.R;
+import cgeo.geocaching.ui.dialog.Dialogs;
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+
+public final class MapUtils {
+
+    private MapUtils() {
+        // utility class
+    }
+
+    public static void showInvalidMapfileMessage(final Context context) {
+        Dialogs.messageNeutral((Activity) context, context.getString(R.string.warn_invalid_mapfile), R.string.more_information, (dialog, which) -> {
+            final Intent intent = new Intent(Intent.ACTION_VIEW);
+            intent.addCategory(Intent.CATEGORY_BROWSABLE);
+            intent.setDataAndType(Uri.parse(context.getString(R.string.settings_offline_maps_url)), "text/html");
+            context.startActivity(intent);
+        });
+    }
+}

add link to map docs to invalid mapfile message