chore: Integrate the absent APM APIs into the APM screen of the sample application.

Author: AndrewAminInstabug

example/lib/main.dart

@@ -5,6 +5,7 @@ import 'dart:convert';
 
 import 'package:flutter/material.dart';
 import 'package:instabug_flutter/instabug_flutter.dart';
+import 'package:instabug_flutter_example/src/components/apm_switch.dart';
 import 'package:instabug_http_client/instabug_http_client.dart';
 import 'package:instabug_flutter_example/src/app_routes.dart';
 import 'package:instabug_flutter_example/src/widget/nested_view.dart';

example/lib/src/components/apm_switch.dart

@@ -0,0 +1,33 @@
+import 'package:flutter/material.dart';
+import 'package:instabug_flutter/instabug_flutter.dart';
+import 'package:instabug_flutter_example/src/utils/show_messages.dart';
+
+class APMSwitch extends StatefulWidget {
+  const APMSwitch({Key? key}) : super(key: key);
+
+  @override
+  State<APMSwitch> createState() => _APMSwitchState();
+}
+
+class _APMSwitchState extends State<APMSwitch> {
+  bool isEnabled = false;
+
+  @override
+  Widget build(BuildContext context) {
+    return Column(
+      children: [
+        SwitchListTile.adaptive(
+          title: const Text('APM Enabled'),
+          value: isEnabled,
+          onChanged: (value) => onAPMChanged(context, value),
+        ),
+      ],
+    );
+  }
+
+  void onAPMChanged(BuildContext context, bool value) {
+    APM.setEnabled(value);
+    showSnackBar(context, "APM is ${value ? "enabled" : "disabled"}");
+    setState(() => isEnabled = value);
+  }
+}

example/lib/src/components/network_content.dart

@@ -17,6 +17,7 @@ class _NetworkContentState extends State<NetworkContent> {
   @override
   Widget build(BuildContext context) {
     return Column(
+
       children: [
         InstabugClipboardInput(
           label: 'Endpoint Url',
@@ -26,7 +27,7 @@ class _NetworkContentState extends State<NetworkContent> {
           text: 'Send Request To Url',
           onPressed: () => _sendRequestToUrl(endpointUrlController.text),
         ),
-        Text("W3C Header Section"),
+        const Text("W3C Header Section"),
         InstabugButton(
           text: 'Send Request With Custom traceparent header',
           onPressed: () => _sendRequestToUrl(endpointUrlController.text,

example/lib/src/screens/apm_page.dart

@@ -22,11 +22,18 @@ class _ApmPageState extends State<ApmPage> {
     );
   }
 
+  _endAppLaunch() => APM.endAppLaunch();
+
   @override
   Widget build(BuildContext context) {
     return Page(
       title: 'APM',
       children: [
+        const APMSwitch(),
+        InstabugButton(
+          text: 'End App Launch',
+          onPressed: _endAppLaunch,
+        ),
         const SectionTitle('Network'),
         const NetworkContent(),
         const SectionTitle('Traces'),

example/lib/src/utils/show_messages.dart

@@ -0,0 +1,11 @@
+import 'package:flutter/material.dart';
+
+void showSnackBar(BuildContext context, String message) {
+  final messenger = ScaffoldMessenger.of(context);
+  messenger.clearSnackBars();
+  messenger.showSnackBar(
+    SnackBar(
+      content: Text(message),
+    ),
+  );
+}