feat(example): clean up for android

example/lib/components/text_messaging_view.dart

@@ -0,0 +1,35 @@
+import 'package:flutter/material.dart';
+
+class TextMessagingView extends StatefulWidget {
+  const TextMessagingView({super.key, required this.onSend});
+
+  final ValueChanged<String> onSend;
+
+  @override
+  State<TextMessagingView> createState() => _TextMessagingViewState();
+}
+
+class _TextMessagingViewState extends State<TextMessagingView> {
+  String _message = '';
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      mainAxisSize: MainAxisSize.min,
+      crossAxisAlignment: CrossAxisAlignment.stretch,
+      children: [
+        TextField(
+          onChanged: (value) => setState(() => _message = value),
+          decoration: const InputDecoration(
+            hintText: 'Enter your message',
+          ),
+        ),
+        const SizedBox(height: 10),
+        ElevatedButton(
+          onPressed: () => widget.onSend(_message),
+          child: const Text('Send message'),
+        ),
+      ],
+    );
+  }
+}