From 03e6502549e20592ed4bf2341fc96a39d01efc28 Mon Sep 17 00:00:00 2001
From: LinXunFeng <linxunfeng@yeah.net>
Date: Fri, 2 Feb 2024 17:04:46 +0800
Subject: [PATCH] fix: iOS app crash when exit to background (#494)

---
 ios/Classes/FijkPlugin.m | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/ios/Classes/FijkPlugin.m b/ios/Classes/FijkPlugin.m
index 5aeeee95..e6406009 100644
--- a/ios/Classes/FijkPlugin.m
+++ b/ios/Classes/FijkPlugin.m
@@ -62,6 +62,9 @@ + (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar> *)registrar {
     FijkPlugin *instance = [[FijkPlugin alloc] initWithRegistrar:registrar];
     _instance = instance;
     [registrar addMethodCallDelegate:instance channel:channel];
+    [registrar addApplicationDelegate:instance];
+    // For receiving detachFromEngineForRegistrar.
+    [registrar publish:instance];
 
     FijkPlayer *player = [[FijkPlayer alloc] initJustTexture];
     int64_t vid = [[registrar textures] registerTexture:player];
@@ -99,6 +102,24 @@ - (instancetype)initWithRegistrar:
     return self;
 }
 
+// Called when a plugin is being removed from a FlutterEngine.
+// See: https://github.com/flutter/engine/blob/e29263212bfdd3e51f8b1cd4b07dd60e2395d5bd/shell/platform/darwin/ios/framework/Headers/FlutterPlugin.h#L231-L242
+- (void)detachFromEngineForRegistrar:(NSObject<FlutterPluginRegistrar> *)registrar {
+    [self shutdownAllPlayers];
+}
+
+- (void)applicationWillTerminate:(UIApplication *)application {
+    [self shutdownAllPlayers];
+}
+
+- (void)shutdownAllPlayers {
+    for (NSNumber *pid in _fijkPlayers) {
+        FijkPlayer *fijkplayer = _fijkPlayers[pid];
+        [fijkplayer shutdown];
+    }
+    [_fijkPlayers removeAllObjects];
+}
+
 - (void)handleMethodCall:(FlutterMethodCall *)call
                   result:(FlutterResult)result {