From 4f134a388d0646914b18a104b19b58e075655ceb Mon Sep 17 00:00:00 2001
From: dadameng <982541620@qq.com>
Date: Mon, 10 Mar 2025 14:14:00 +0900
Subject: [PATCH] fix memory leaks when remove observer

---
 example/ios/Runner/GeneratedPluginRegistrant.m | 13 ++++++++++---
 lib/src/page_visibility.dart                   | 11 +++++++++++
 2 files changed, 21 insertions(+), 3 deletions(-)

diff --git a/example/ios/Runner/GeneratedPluginRegistrant.m b/example/ios/Runner/GeneratedPluginRegistrant.m
index 8f2a2bab..c943c942 100755
--- a/example/ios/Runner/GeneratedPluginRegistrant.m
+++ b/example/ios/Runner/GeneratedPluginRegistrant.m
@@ -18,8 +18,14 @@
 @import image_picker_ios;
 #endif
 
-#if __has_include(<video_player_avfoundation/FLTVideoPlayerPlugin.h>)
-#import <video_player_avfoundation/FLTVideoPlayerPlugin.h>
+#if __has_include(<path_provider_foundation/PathProviderPlugin.h>)
+#import <path_provider_foundation/PathProviderPlugin.h>
+#else
+@import path_provider_foundation;
+#endif
+
+#if __has_include(<video_player_avfoundation/FVPVideoPlayerPlugin.h>)
+#import <video_player_avfoundation/FVPVideoPlayerPlugin.h>
 #else
 @import video_player_avfoundation;
 #endif
@@ -35,7 +41,8 @@ @implementation GeneratedPluginRegistrant
 + (void)registerWithRegistry:(NSObject<FlutterPluginRegistry>*)registry {
   [FlutterBoostPlugin registerWithRegistrar:[registry registrarForPlugin:@"FlutterBoostPlugin"]];
   [FLTImagePickerPlugin registerWithRegistrar:[registry registrarForPlugin:@"FLTImagePickerPlugin"]];
-  [FLTVideoPlayerPlugin registerWithRegistrar:[registry registrarForPlugin:@"FLTVideoPlayerPlugin"]];
+  [PathProviderPlugin registerWithRegistrar:[registry registrarForPlugin:@"PathProviderPlugin"]];
+  [FVPVideoPlayerPlugin registerWithRegistrar:[registry registrarForPlugin:@"FVPVideoPlayerPlugin"]];
   [FLTWebViewFlutterPlugin registerWithRegistrar:[registry registrarForPlugin:@"FLTWebViewFlutterPlugin"]];
 }
 
diff --git a/lib/src/page_visibility.dart b/lib/src/page_visibility.dart
index 9cb6e4de..729b0154 100644
--- a/lib/src/page_visibility.dart
+++ b/lib/src/page_visibility.dart
@@ -68,9 +68,20 @@ class PageVisibilityBinding {
 
   /// Unregisters the given observer.
   void removeObserver(PageVisibilityObserver observer) {
+    final routesToRemove = <Route<dynamic>>[];
+
     for (final route in _listeners.keys) {
       final observers = _listeners[route];
       observers?.remove(observer);
+
+      if (observers?.isEmpty ?? false) {
+        routesToRemove.add(route);
+      }
+    }
+
+    for (final route in routesToRemove) {
+      _listeners.remove(route);
+      Logger.log('page_visibility, #cleanupEmptyRoute, $route');
     }
     Logger.log('page_visibility, #removeObserver, $observer');
   }