v10.1.1: fix import/export operations on iOS

CHANGELOG.md

@@ -18,6 +18,12 @@ Many thanks to my sponsors, no matter how much or how little they donated. Spons
 
 # Changelog
 
+## [10.1.1] - 2025/02/03
+
+* Fixed bug where import operation fatally crashed on some iOS devices  
+  This appears to be an [ObjectBox issue](https://github.com/objectbox/objectbox-dart/issues/654) where streaming the results of a database query caused the crash. Instead, FMTC now uses a custom chunking system to avoid streaming and also avoid loading potentially many tiles into memory.
+* Improved performance of import operation
+
 ## [10.1.0] - 2025/02/02
 
 * Added support for flutter_map v8

example/lib/src/screens/import/stages/progress.dart

@@ -62,13 +62,9 @@ class _ImportProgressStageState extends State<ImportProgressStage> {
               style: Theme.of(context).textTheme.titleLarge,
               textAlign: TextAlign.center,
             ),
-            const SizedBox(height: 16),
+            const SizedBox(height: 8),
             const Text(
-              'This could take a while.\n'
-              "We don't recommend leaving this screen. The import will "
-              'continue, but performance could be affected.\n'
-              'Closing the app will stop the import operation in an '
-              'indeterminate (but stable) state.',
+              "This could take a while. Don't leave this screen.",
               textAlign: TextAlign.center,
             ),
           ],

example/pubspec.yaml

@@ -1,39 +1,37 @@
 name: fmtc_demo
 description: The demo app for 'flutter_map_tile_caching', showcasing its functionality and use-cases.
 publish_to: "none"
-version: 10.1.0
+version: 10.1.1
 
 environment:
   sdk: ">=3.6.0 <4.0.0"
   flutter: ">=3.27.0"
 
 dependencies:
-  async: ^2.12.0
+  async: ^2.13.0
   auto_size_text: ^3.0.0
   badges: ^3.1.2
-  collection: ^1.18.0
-  file_picker: 8.1.4 # Compatible with 3.27!
+  collection: ^1.19.1
+  file_picker: ^9.0.2
   flutter:
     sdk: flutter
-  flutter_map:
-  flutter_map_animations: ^0.8.0
+  flutter_map: ^8.1.1
+  flutter_map_animations: ^0.9.0
   flutter_map_tile_caching:
-  flutter_slidable: ^3.1.2
+  flutter_slidable: ^4.0.0
   google_fonts: ^6.2.1
   gpx: ^2.3.0
-  http: ^1.2.2
-  intl: ^0.19.0
+  http: ^1.3.0
+  intl: ^0.20.2
   latlong2: ^0.9.1
   path: ^1.9.1
   path_provider: ^2.1.5
   provider: ^6.1.2
-  share_plus: ^10.1.3
-  shared_preferences: ^2.3.3
-  stream_transform: ^2.1.0
+  share_plus: ^10.1.4
+  shared_preferences: ^2.5.2
+  stream_transform: ^2.1.1
 
 dependency_overrides:
-  flutter_map:
-    git: https://github.com/fleaflet/flutter_map.git
   flutter_map_tile_caching:
     path: ../
 

lib/src/backend/impls/objectbox/backend/backend.dart

@@ -9,9 +9,8 @@ import 'dart:isolate';
 import 'dart:math';
 
 import 'package:collection/collection.dart';
-import 'package:flutter/material.dart';
+import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
-import 'package:meta/meta.dart';
 import 'package:path/path.dart' as path;
 import 'package:path_provider/path_provider.dart';