Preserve async tile loading state

CHANGELOG.md

@@ -1,3 +1,7 @@
+## [2.0.3]
+
+* Preserve tile widget state during map movement to prevent flickering with asynchronously loaded tiles.
+
 ## [2.0.2]
 
 * Shape layers are more customizable now.

lib/src/layers/tile_layer.dart

@@ -80,12 +80,12 @@ class _TileLayerState extends State<TileLayer> {
         final oy = (j * tileSizeScaled) + centerY - ttl.y;
 
         final child = Positioned(
+          key: ValueKey('$fixedZoom/$i/$j'),
           width: tileSizeScaled.ceilToDouble(),
           height: tileSizeScaled.ceilToDouble(),
           left: ox.floorToDouble(),
           top: oy.floorToDouble(),
-          child: widget.builder
-              .call(context, i, j, (_controller.zoom + 0.0000001).floor()),
+          child: widget.builder.call(context, i, j, fixedZoom),
         );
 
         children.add(child);

pubspec.yaml

@@ -1,6 +1,6 @@
 name: map
 description: Geographical Map widget for flutter supporting different projections including EPSG4326/Mercator/WGS1984.
-version: 2.0.2
+version: 2.0.3
 homepage: https://pwa.ir
 repository: https://github.com/xclud/flutter_map