dependencies:  optimizely_flutter_sdk: ^1.0.1

import 'dart:math';import 'package:flutter/material.dart';import 'package:optimizely_flutter_sdk/optimizely_flutter_sdk.dart';import 'dart:async';// NOTE: You need to change this SDK key to your project's SDK Keyconst String sdkKey = "Your_SDK_Key";const String logTag = "OPTIMIZELY_QUICK_START";void main() {  runApp(const MyApp());  var productSorter = ProductSorter();  productSorter.initializeQuickStart();}class MyApp extends StatefulWidget {  const MyApp({Key? key}) : super(key: key);  @override  State<MyApp> createState() => _MyAppState();}class _MyAppState extends State<MyApp> {  String uiResponse = 'Unknown';  @override  void initState() {    super.initState();  }  @override  Widget build(BuildContext context) {    return MaterialApp(      home: Scaffold(        appBar: AppBar(          title: const Text('Quick start example app'),        ),        body: Center(          child: Text(uiResponse),        ),      ),    );  }}class ProductSorter {  String _datafileHost = "https://cdn.optimizely.com";  String _datafileSuffixAndroid = "/datafiles/%s.json";  String _datafileSuffixIOS = "/datafiles/%@.json";  Future<void> initializeQuickStart() async {    // Setting up custom datafile URL format    Map<ClientPlatform, DatafileHostOptions> datafileHostOptions = {};    datafileHostOptions[ClientPlatform.android] =        DatafileHostOptions(_datafileHost, _datafileSuffixAndroid);    datafileHostOptions[ClientPlatform.iOS] =        DatafileHostOptions(_datafileHost, _datafileSuffixIOS);    // Initializing OptimizelyClient    var flutterSDK = OptimizelyFlutterSdk(        sdkKey, datafileHostOptions: datafileHostOptions);    var response = await flutterSDK.initializeClient();    if (response.success) {      flutterSDK.addConfigUpdateNotificationListener((msg) {        runQuickStart(flutterSDK);      });      await runQuickStart(flutterSDK);    }  }  Future<void> runQuickStart(OptimizelyFlutterSdk flutterSDK) async {    /* --------------------------------     * to get rapid demo results, generate random users. Each user always sees the same variation unless you reconfigure the flag rule.     * --------------------------------     */    // simulate 50 users    var rangeMax = 9999;    var rangeMin = 1000;    var range = Random();    var hasOnFlags = false;    for (int i = 0; i < 10; i++) {      var userId = "${range.nextInt(rangeMax - rangeMin) + rangeMin}";      /* --------------------------------       Create hardcoded user & bucket user into a flag variation       --------------------------------      */      var user = await flutterSDK.createUserContext(userId: userId);      // "product_sort" corresponds to a flag key in your Optimizely project      var decisionResponse = await user!.decide("product_sort");      var decision = decisionResponse.decision;      // did decision fail with a critical error?      if (decision?.variationKey == null) {        print("\n\n$logTag decision error: ${decisionResponse.reason}");      }      // get a dynamic configuration variable      // "sort_method" corresponds to a variable key in your Optimizely project      String sortMethod = decision?.variables["sort_method"] as String;      if (decision!.enabled) {        // Keep count how many visitors had the flag enabled        hasOnFlags = true;      }      /* --------------------------------         Mock what the users sees with print statements (in production, use flag variables to implement feature configuration)         --------------------------------      */      var userIdResponse = await user.getUserId();      // always returns false until you enable a flag rule in your Optimizely project      print("\n\n$logTag Flag ${(decision.enabled          ? "on"          : "off")}. User number ${userIdResponse.userId} saw flag variation: ${decision          .variationKey} and got products sorted by: ${sortMethod} config variable as part of flag rule: ${decision          .ruleKey}");    }    if (!hasOnFlags) {      print(          "\n\n$logTag Flag was off for everyone. Some reasons could include:" +              "\n1. Your sample size of visitors was too small. Rerun, or increase the iterations in the FOR loop" +              "\n2. By default you have 2 keys for 2 project environments (dev/prod). Verify in Settings>Environments that you used the right key for the environment where your flag is toggled to ON." +              "\nCheck your key at  https://app.optimizely.com/v2/projects/YOUR_PROJECT_ID/settings/implementation");    }  }}

var user = await optimizelyClient.createUserContext(userId: userId);// "product_sort" corresponds to the flag key you create in the Optimizely appvar decideResponse = await user!.decide("product_sort");

// always returns false until you enable a flag rule in the Optimizely appif (decideResponse.decision!.enabled) {  // "sort_method" corresponds to variable key you define in Optimizely app  var sortMethod = decideResponse.decision!.variables["sort_method"] as String;  print("sort_method: $sortMethod");}

import 'dart:math';import 'package:flutter/material.dart';import 'package:optimizely_flutter_sdk/optimizely_flutter_sdk.dart';import 'dart:async';import 'package:optimizely_flutter_sdk/src/user_context/optimizely_user_context.dart';// NOTE: You need to change this SDK key to your project's SDK Keyconst String sdkKey = "Your_SDK_Key";const String logTag = "OPTIMIZELY_QUICK_START";void main() {  runApp(const MyApp());  var productSorter = ProductSorter();  productSorter.initializeQuickStart();}class MyApp extends StatefulWidget {  const MyApp({Key? key}) : super(key: key);  @override  State<MyApp> createState() => _MyAppState();}class _MyAppState extends State<MyApp> {  String uiResponse = 'Unknown';  @override  void initState() {    super.initState();  }  @override  Widget build(BuildContext context) {    return MaterialApp(      home: Scaffold(        appBar: AppBar(          title: const Text('Quick start example app'),        ),        body: Center(          child: Text(uiResponse),        ),      ),    );  }}class ProductSorter {  String _datafileHost = "https://cdn.optimizely.com";  String _datafileSuffixAndroid = "/datafiles/%s.json";  String _datafileSuffixIOS = "/datafiles/%@.json";  Future<void> initializeQuickStart() async {    // Setting up custom datafile URL format    Map<ClientPlatform, DatafileHostOptions> datafileHostOptions = {};    datafileHostOptions[ClientPlatform.android] =        DatafileHostOptions(_datafileHost, _datafileSuffixAndroid);    datafileHostOptions[ClientPlatform.iOS] =        DatafileHostOptions(_datafileHost, _datafileSuffixIOS);    // Initializing OptimizelyClient    var flutterSDK = OptimizelyFlutterSdk(        sdkKey, datafileHostOptions: datafileHostOptions);    var response = await flutterSDK.initializeClient();    if (response.success) {      flutterSDK.addConfigUpdateNotificationListener((msg) {        runQuickStart(flutterSDK);      });      await runQuickStart(flutterSDK);    }  }  Future<void> runQuickStart(OptimizelyFlutterSdk flutterSDK) async {    /* --------------------------------     * to get rapid demo results, generate random users. Each user always sees the same variation unless you reconfigure the flag rule.     * --------------------------------     */    /* --------------------------------       OPTIONAL: Add a notification listener so you can integrate with third-party analytics platforms       --------------------------------    */    // var notificationId = await flutterSDK.addDecisionNotificationListener((decisionNotification) {    //   if (decisionNotification.type == "flag") {    //    //     var serializedInfo = decisionNotification.decisionInfo.toString();    //     print("$logTag Feature flag access related information: ${serializedInfo}");    //     // Send data to analytics provider here    //   }    // });    // simulate 50 users    var rangeMax = 9999;    var rangeMin = 1000;    var range = Random();    var hasOnFlags = false;    for (int i = 0; i < 10; i++) {      var userId = "${range.nextInt(rangeMax - rangeMin) + rangeMin}";      /* --------------------------------       Create hardcoded user & bucket user into a flag variation       --------------------------------      */      var user = await flutterSDK.createUserContext(userId: userId);      // "product_sort" corresponds to a flag key in your Optimizely project      var decisionResponse = await user!.decide("product_sort");      var decision = decisionResponse.decision;      // did decision fail with a critical error?      if (decision?.variationKey == null) {        print("\n\n$logTag decision error: ${decisionResponse.reason}");      }      // get a dynamic configuration variable      // "sort_method" corresponds to a variable key in your Optimizely project      String sortMethod = decision?.variables["sort_method"] as String;      if (decision!.enabled) {        // Keep count how many visitors had the flag enabled        hasOnFlags = true;      }      /* --------------------------------         Mock what the users sees with print statements (in production, use flag variables to implement feature configuration)         --------------------------------      */      // always returns false until you enable a flag rule in your Optimizely project      var userIdResponse = await user.getUserId();      print("\n\n$logTag Flag ${(decision.enabled          ? "on"          : "off")}. User number ${userIdResponse.userId} saw flag variation: ${decision          .variationKey} and got products sorted by: ${sortMethod} config variable as part of flag rule: ${decision          .ruleKey}");      await mockPurchase(user);    }    if (!hasOnFlags) {      print(          "\n\n$logTag Flag was off for everyone. Some reasons could include:\n1. Your sample size of visitors was too small. Rerun, or increase the iterations in the FOR loop\n2. By default you have 2 keys for 2 project environments (dev/prod). Verify in Settings>Environments that you used the right key for the environment where your flag is toggled to ON.\nCheck your key at  https://app.optimizely.com/v2/projects/YOUR_PROJECT_ID/settings/implementation");    } else {    }  }  // mock tracking a user event so you can see some experiment reports  Future<void> mockPurchase(OptimizelyUserContext user) async {    print("\n\n$logTag Pretend that user made a purchase? y/n ");    Random rnd = new Random();    int yesOrNo = rnd.nextInt(2);    // Assigning random yes and no    String answer = yesOrNo == 1? "y" : "n";    print("\n\n$logTag $answer");    var userIdResponse = await user.getUserId();    if (answer == "y") {      // track a user event you defined in the Optimizely app      await user.trackEvent("purchase");      print("\n\n$logTag Optimizely recorded a purchase in experiment results for user ${userIdResponse.userId}");    } else {      print("\n\n$logTag Optimizely didn't record a purchase in experiment results  for user ${userIdResponse.userId}");    }  }}

Flag on. User number 1496 saw flag variation: on and got products sorted by: popular_first config variable as part of flag rule: experiment_1Pretend that user made a purchase? y/nnOptimizely didn't record a purchase in experiment results for user 1496Flag off. User number 1194 saw flag variation: off and got products sorted by: alphabetical config variable as part of flag rule: experiment_1Pretend that user made a purchase? y/nyOptimizely recorded a purchase in experiment results for user 1194Flag off. User number 5815 saw flag variation: off and got products sorted by: alphabetical config variable as part of flag rule: experiment_1Pretend that user made a purchase? y/nyOptimizely recorded a purchase in experiment results for user 5815Flag on. User number 1248 saw flag variation: on and got products sorted by: popular_first config variable as part of flag rule: experiment_1Pretend that user made a purchase? y/nyOptimizely recorded a purchase in experiment results for user 1248Flag off. User number 9580 saw flag variation: off and got products sorted by: alphabetical config variable as part of flag rule: experiment_1Pretend that user made a purchase? y/nnOptimizely didn't record a purchase in experiment results for user 9580Done with your mocked A/B test.Check out your report at  https://app.optimizely.com/v2/projects/19957465438/reportsBe sure to select the environment that corresponds to your SDK key

// Track how users behave when they see a flag variation// e.g., after your app processed a purchase, let Optimizely know what happened:user.trackEvent("purchased");