Fix/ios background permission reset

permission_handler_apple/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 9.4.8
+
+* Fixed iOS permission request state not being reset when app enters background, causing subsequent requests to fail with `ERROR_ALREADY_REQUESTING_PERMISSIONS`.
+
 ## 9.4.7
 
 * Increases minimum supported Flutter version to 3.3.0, and removes code only

permission_handler_apple/ios/Classes/PermissionHandlerPlugin.m

@@ -21,6 +21,13 @@ + (void)registerWithRegistrar:(NSObject <FlutterPluginRegistrar> *)registrar {
                                      binaryMessenger:[registrar messenger]];
     PermissionManager *permissionManager = [[PermissionManager alloc] initWithStrategyInstances];
     PermissionHandlerPlugin *instance = [[PermissionHandlerPlugin alloc] initWithPermissionManager:permissionManager];
+
+    [[NSNotificationCenter defaultCenter] 
+        addObserver:instance
+        selector:@selector(handleApplicationDidEnterBackground:)
+        name:UIApplicationDidEnterBackgroundNotification
+        object:nil];
+
     [registrar addMethodCallDelegate:instance channel:channel];
 }
 
@@ -62,4 +69,23 @@ - (void)handleMethodCall:(FlutterMethodCall *)call result:(FlutterResult)result
     }
 }
 
+- (void)handleApplicationDidEnterBackground:(NSNotification *)notification {
+    if (_methodResult != nil) {
+        #ifdef DEBUG
+                NSLog(@"[PermissionHandler] App backgrounded with pending permission request. Cancelling request.");
+        #endif
+
+        _methodResult([FlutterError 
+            errorWithCode:@"REQUEST_INTERRUPTED" 
+            message:@"Permission request was interrupted because the app entered background" 
+            details:nil]);
+
+        _methodResult = nil;
+    }
+}
+
+- (void)dealloc {
+    [[NSNotificationCenter defaultCenter] removeObserver:self];
+}
+
 @end