fix: Manually dispose memory leak objects (#709)

Author: zeqinjie

lib/src/delegates/asset_picker_builder_delegate.dart

@@ -937,6 +937,9 @@ class DefaultAssetPickerBuilderDelegate
   /// Whether the bottom actions bar should display.
   bool get hasBottomActions => isPreviewEnabled || !isSingleAssetMode;
 
+  /// The tap gesture recognizer for present limited assets.
+  TapGestureRecognizer? presentLimitedTapGestureRecognizer;
+
   /// The listener to track the scroll position of the [gridScrollController]
   /// if [keepScrollOffset] is true.
   /// 当 [keepScrollOffset] 为 true 时，跟踪 [gridScrollController] 位置的监听。
@@ -946,6 +949,13 @@ class DefaultAssetPickerBuilderDelegate
     }
   }
 
+  @override
+  void initState(AssetPickerState<AssetEntity, AssetPathEntity> state) {
+    super.initState(state);
+    presentLimitedTapGestureRecognizer = TapGestureRecognizer()
+      ..onTap = PhotoManager.presentLimited;
+  }
+
   /// Be aware that the method will do nothing when [keepScrollOffset] is true.
   /// 注意当 [keepScrollOffset] 为 true 时方法不会进行释放。
   @override
@@ -955,6 +965,7 @@ class DefaultAssetPickerBuilderDelegate
       return;
     }
     provider.dispose();
+    presentLimitedTapGestureRecognizer?.dispose();
     super.dispose();
   }
 
@@ -2032,8 +2043,7 @@ class DefaultAssetPickerBuilderDelegate
                         text: ' '
                             '${textDelegate.changeAccessibleLimitedAssets}',
                         style: TextStyle(color: interactiveTextColor(context)),
-                        recognizer: TapGestureRecognizer()
-                          ..onTap = PhotoManager.presentLimited,
+                        recognizer: presentLimitedTapGestureRecognizer,
                       ),
                     ],
                   ),

lib/src/widget/asset_picker_page_route.dart

@@ -45,6 +45,15 @@ class AssetPickerPageRoute<T> extends PageRoute<T> {
 
   final bool Function(TransitionRoute<dynamic>)? canTransitionFromPredicate;
 
+  /// The curved animation.
+  CurvedAnimation? _curvedAnimation;
+
+  @override
+  void dispose() {
+    _curvedAnimation?.dispose();
+    super.dispose();
+  }
+
   @override
   bool canTransitionFrom(TransitionRoute<dynamic> previousRoute) =>
       canTransitionFromPredicate?.call(previousRoute) ?? false;
@@ -65,12 +74,14 @@ class AssetPickerPageRoute<T> extends PageRoute<T> {
     Animation<double> secondaryAnimation,
     Widget child,
   ) {
+    _curvedAnimation ??=
+        CurvedAnimation(curve: transitionCurve, parent: animation);
     return SlideTransition(
       position: Tween<Offset>(
         begin: const Offset(0, 1),
         end: Offset.zero,
       ).animate(
-        CurvedAnimation(curve: transitionCurve, parent: animation),
+        _curvedAnimation!,
       ),
       child: ClipRect(child: child), // Clip the overflowed part.
     );

lib/src/widget/builder/image_page_builder.dart

@@ -200,6 +200,7 @@ class _LivePhotoWidgetState extends State<_LivePhotoWidget> {
     _scrollNotificationObserver?.removeListener(_handleScrollNotification);
     _controller.pause();
     _controller.removeListener(_notify);
+    _showVideo.dispose();
     super.dispose();
   }
 

lib/src/widget/builder/video_page_builder.dart

@@ -90,6 +90,7 @@ class _VideoPageBuilderState extends State<VideoPageBuilder> {
       ?..removeListener(videoPlayerListener)
       ..pause()
       ..dispose();
+    isPlaying.dispose();
     super.dispose();
   }