diff --git a/android/src/main/java/com/gianlucaparadise/flutter_cast_framework/HostApis.java b/android/src/main/java/com/gianlucaparadise/flutter_cast_framework/HostApis.java
index c976fa9..8492e39 100644
--- a/android/src/main/java/com/gianlucaparadise/flutter_cast_framework/HostApis.java
+++ b/android/src/main/java/com/gianlucaparadise/flutter_cast_framework/HostApis.java
@@ -154,6 +154,13 @@ public class HostApis {
         callback.reply(output);
       });
     }
+    public void onCastStateChanged(Long castStateArg, Reply<Void> callback) {
+      BasicMessageChannel<Object> channel =
+          new BasicMessageChannel<>(binaryMessenger, "dev.flutter.pigeon.CastFlutterApi.onCastStateChanged", getCodec());
+      channel.send(new ArrayList<Object>(Arrays.asList(castStateArg)), channelReply -> {
+        callback.reply(null);
+      });
+    }
   }
   private static Map<String, Object> wrapError(Throwable exception) {
     Map<String, Object> errorMap = new HashMap<>();
diff --git a/ios/Classes/HostApis.h b/ios/Classes/HostApis.h
index acc6387..c56df78 100644
--- a/ios/Classes/HostApis.h
+++ b/ios/Classes/HostApis.h
@@ -31,5 +31,6 @@ NSObject<FlutterMessageCodec> *CastFlutterApiGetCodec(void);
 @interface CastFlutterApi : NSObject
 - (instancetype)initWithBinaryMessenger:(id<FlutterBinaryMessenger>)binaryMessenger;
 - (void)getSessionMessageNamespacesWithCompletion:(void(^)(NSArray<NSString *> *, NSError *_Nullable))completion;
+- (void)onCastStateChangedCastState:(NSNumber *)castState completion:(void(^)(NSError *_Nullable))completion;
 @end
 NS_ASSUME_NONNULL_END
diff --git a/ios/Classes/HostApis.m b/ios/Classes/HostApis.m
index 5656557..4e9016d 100644
--- a/ios/Classes/HostApis.m
+++ b/ios/Classes/HostApis.m
@@ -194,4 +194,14 @@ NSObject<FlutterMessageCodec> *CastFlutterApiGetCodec() {
     completion(output, nil);
   }];
 }
+- (void)onCastStateChangedCastState:(NSNumber *)arg_castState completion:(void(^)(NSError *_Nullable))completion {
+  FlutterBasicMessageChannel *channel =
+    [FlutterBasicMessageChannel
+      messageChannelWithName:@"dev.flutter.pigeon.CastFlutterApi.onCastStateChanged"
+      binaryMessenger:self.binaryMessenger
+      codec:CastFlutterApiGetCodec()];
+  [channel sendMessage:@[arg_castState] reply:^(id reply) {
+    completion(nil);
+  }];
+}
 @end
diff --git a/lib/src/HostApis.dart b/lib/src/HostApis.dart
index ff5a175..ac5bb1a 100644
--- a/lib/src/HostApis.dart
+++ b/lib/src/HostApis.dart
@@ -116,6 +116,7 @@ abstract class CastFlutterApi {
   static const MessageCodec<Object?> codec = _CastFlutterApiCodec();
 
   List<String?> getSessionMessageNamespaces();
+  void onCastStateChanged(int castState);
   static void setup(CastFlutterApi? api) {
     {
       const BasicMessageChannel<Object?> channel = BasicMessageChannel<Object?>(
@@ -130,5 +131,21 @@ abstract class CastFlutterApi {
         });
       }
     }
+    {
+      const BasicMessageChannel<Object?> channel = BasicMessageChannel<Object?>(
+          'dev.flutter.pigeon.CastFlutterApi.onCastStateChanged', codec);
+      if (api == null) {
+        channel.setMessageHandler(null);
+      } else {
+        channel.setMessageHandler((Object? message) async {
+          assert(message != null, 'Argument for dev.flutter.pigeon.CastFlutterApi.onCastStateChanged was null.');
+          final List<Object?> args = (message as List<Object?>?)!;
+          final int? arg_castState = args[0] as int?;
+          assert(arg_castState != null, 'Argument for dev.flutter.pigeon.CastFlutterApi.onCastStateChanged was null, expected non-null int.');
+          api.onCastStateChanged(arg_castState!);
+          return;
+        });
+      }
+    }
   }
 }
diff --git a/lib/src/HostApisDefinition.dart b/lib/src/HostApisDefinition.dart
index b9a92f2..060eabe 100644
--- a/lib/src/HostApisDefinition.dart
+++ b/lib/src/HostApisDefinition.dart
@@ -14,4 +14,5 @@ abstract class CastApi {
 @FlutterApi()
 abstract class CastFlutterApi {
   List<String> getSessionMessageNamespaces();
+  void onCastStateChanged(int castState);
 }
\ No newline at end of file