AppId setup;

Namespaces setup;

android/build.gradle

@@ -44,7 +44,7 @@ dependencies {
 
     implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
 
-    implementation "com.google.android.gms:play-services-cast-framework:17.1.0"
+    api "com.google.android.gms:play-services-cast-framework:17.1.0"
 
     // Lifecycle
     implementation "androidx.lifecycle:lifecycle-extensions:$lifecycle_version"

android/src/main/AndroidManifest.xml

@@ -1,9 +1,2 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+<manifest package="com.gianlucaparadise.flutter_cast_framework">
-    package="com.gianlucaparadise.flutter_cast_framework">
-
-    <application>
-        <meta-data
-            android:name="com.google.android.gms.cast.framework.OPTIONS_PROVIDER_CLASS_NAME"
-            android:value="com.gianlucaparadise.flutter_cast_framework.cast.CastOptionsProvider" />
-    </application>
 </manifest>

android/src/main/kotlin/com/gianlucaparadise/flutter_cast_framework/cast/DefaultCastOptionsProvider.kt

@@ -0,0 +1,22 @@
+package com.gianlucaparadise.flutter_cast_framework.cast
+
+import android.content.Context
+import com.google.android.gms.cast.framework.CastOptions
+import com.google.android.gms.cast.framework.OptionsProvider
+import com.google.android.gms.cast.framework.SessionProvider
+
+
+/**
+ * This is here to be used as an example
+ */
+class DefaultCastOptionsProvider : OptionsProvider {
+    override fun getCastOptions(context: Context): CastOptions {
+        return CastOptions.Builder()
+                .setReceiverApplicationId("4F8B3483")
+                .build()
+    }
+
+    override fun getAdditionalSessionProviders(context: Context): List<SessionProvider>? {
+        return null
+    }
+}

example/android/app/src/main/AndroidManifest.xml

@@ -29,5 +29,10 @@
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
+
+        <meta-data
+            android:name="com.google.android.gms.cast.framework.OPTIONS_PROVIDER_CLASS_NAME"
+            android:value="com.gianlucaparadise.flutter_cast_framework_example.CastOptionsProvider" />
+
     </application>
 </manifest>

example/android/app/src/main/kotlin/com/gianlucaparadise/flutter_cast_framework_example/CastOptionsProvider.kt

@@ -1,4 +1,4 @@
-package com.gianlucaparadise.flutter_cast_framework.cast
+package com.gianlucaparadise.flutter_cast_framework_example
 
 import android.content.Context
 import com.google.android.gms.cast.framework.CastOptions

example/lib/main.dart

@@ -18,9 +18,12 @@ class _MyAppState extends State<MyApp> {
 
   final textMessageController = TextEditingController();
 
+  final String castNamespace = 'urn:x-cast:cast-your-instructions';
+
   @override
   void initState() {
     super.initState();
+    FlutterCastFramework.namespaces = [castNamespace];
     FlutterCastFramework.castContext.state.addListener(_onCastStateChanged);
     FlutterCastFramework.castContext.sessionManager.state
         .addListener(_onSessionStateChanged);
@@ -60,7 +63,7 @@ class _MyAppState extends State<MyApp> {
   void _onSendMessage() {
     String message = this.textMessageController.text;
     FlutterCastFramework.castContext.sessionManager
-        .sendMessage('urn:x-cast:cast-your-instructions', message);
+        .sendMessage(castNamespace, message);
   }
 
   @override
@@ -79,7 +82,7 @@ class _MyAppState extends State<MyApp> {
                 style: Theme.of(context).textTheme.title,
               ),
               Text('Cast State: $_castState'),
-              Text('Cast State: $_sessionState'),
+              Text('Session State: $_sessionState'),
               Text(
                 'Message',
                 style: Theme.of(context).textTheme.title,

lib/flutter_cast_framework.dart

@@ -7,6 +7,9 @@ class FlutterCastFramework {
   static const MethodChannel _channel =
       const MethodChannel('flutter_cast_framework');
 
+  /// List of namespaces to listen for custom messages
+  static List<String> namespaces = [];
+
   static bool _isInitiated = false;
 
   static _init() {
@@ -33,7 +36,7 @@ class FlutterCastFramework {
           break;
 
         case PlatformMethodNames.getSessionMessageNamespaces:
-          return ["urn:x-cast:cast-your-instructions"];
+          return namespaces;
 
         case PlatformMethodNames.onMessageReceived:
           castContext.sessionManager.platformOnMessageReceived(arguments);