app_tracking_transparency 2.0.6

This Flutter plugin allows you to display ios tracking authorization dialogue and request permission to collect data.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:app_tracking_transparency/app_tracking_transparency.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: HomePage(),
    );
  }
}

class HomePage extends StatefulWidget {
  @override
  _HomePageState createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  String _authStatus = 'Unknown';

  @override
  void initState() {
    super.initState();

    // It is safer to call native code using addPostFrameCallback after the widget has been fully built and initialized.
    // Directly calling native code from initState may result in errors due to the widget tree not being fully built at that point.    
    WidgetsFlutterBinding.ensureInitialized().addPostFrameCallback((_) => initPlugin());

  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlugin() async {
    final TrackingStatus status =
        await AppTrackingTransparency.trackingAuthorizationStatus;
    setState(() => _authStatus = '$status');
    // If the system can show an authorization request dialog
    if (status == TrackingStatus.notDetermined) {
      // Show a custom explainer dialog before the system dialog
      await showCustomTrackingDialog(context);
      // Wait for dialog popping animation
      await Future.delayed(const Duration(milliseconds: 200));
      // Request system's tracking authorization dialog
      final TrackingStatus status =
          await AppTrackingTransparency.requestTrackingAuthorization();
      setState(() => _authStatus = '$status');
    }

    final uuid = await AppTrackingTransparency.getAdvertisingIdentifier();
    print("UUID: $uuid");
  }

  Future<void> showCustomTrackingDialog(BuildContext context) async =>
      await showDialog<void>(
        context: context,
        builder: (context) => AlertDialog(
          title: const Text('Dear User'),
          content: const Text(
            'We care about your privacy and data security. We keep this app free by showing ads. '
            'Can we continue to use your data to tailor ads for you?\n\nYou can change your choice anytime in the app settings. '
            'Our partners will collect data and use a unique identifier on your device to show you ads.',
          ),
          actions: [
            TextButton(
              onPressed: () => Navigator.pop(context),
              child: const Text('Continue'),
            ),
          ],
        ),
      );

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('App Tracking Transparency Example'),
      ),
      body: Center(
        child: Text('Tracking status: $_authStatus\n'),
      ),
    );
  }
}