Merge branch 'location_tags' into add_location_screen

lib/services/location_service.dart

@@ -133,10 +133,10 @@ class LocationService {
 }
 
 class GPSData {
-  String latRef;
-  List<double> lat;
-  String longRef;
-  List<double> long;
+  final String latRef;
+  final List<double> lat;
+  final String longRef;
+  final List<double> long;
 
   GPSData(this.latRef, this.lat, this.longRef, this.long);
 

lib/ui/viewer/file/file_details_widget.dart

@@ -244,7 +244,7 @@ class _FileDetailsWidgetState extends State<FileDetailsWidget> {
         _exifData["longRef"] != null;
   }
 
-  _generateExifForLocation(Map<String, IfdTag> exif) {
+  void _generateExifForLocation(Map<String, IfdTag> exif) {
     if (exif["GPS GPSLatitude"] != null) {
       _exifData["lat"] = exif["GPS GPSLatitude"]!
           .values