⚡️ Stop enabling drag to select when maxAssets == 1

Author: AlexV525

CHANGELOG.md

@@ -12,6 +12,7 @@ that can be found in the LICENSE file. -->
 **Improvements**
 
 - Improve how `MediaQuery` is being listened.
+- Stop enabling drag to select when `maxAssets == 1`.
 
 ## 9.5.1
 

lib/src/constants/config.dart

@@ -213,6 +213,9 @@ class AssetPickerConfig {
   ///
   /// The feature enables by default if no accessibility service is being used.
   /// 在未使用辅助功能的情况下会默认启用该功能。
+  ///
+  /// The feature is not available when `maxAssets` is `1`.
+  /// 当 `maxAssets` 为 `1` 时，该功能不可用。
   /// {@endtemplate}
   final bool? dragToSelect;
 }

lib/src/delegates/asset_picker_builder_delegate.dart

@@ -1372,8 +1372,12 @@ class DefaultAssetPickerBuilderDelegate
                   specialItem: specialItem,
                 );
 
-                // Enables drag-to-select.
-                if (dragToSelect ?? !accessibleNavigation) {
+                // Enables drag-to-select when:
+                // 1. The feature is enabled manually.
+                // 2. The accessibility service is not being used.
+                // 3. The picker is not in single asset mode.
+                if ((dragToSelect ?? !accessibleNavigation) &&
+                    !isSingleAssetMode) {
                   child = GestureDetector(
                     excludeFromSemantics: true,
                     onHorizontalDragStart: (d) {