WebView & Direct Link

Below is the integration guide for WebView and Direct Link

Although we provide support for WebView or direct-link integration, this is not the recommended approach. Whenever possible, you should integrate our official SDK instead.

Using the SDK ensures:

Better tracking accuracy — SDK handles device signals and user sessions more reliably
Stronger fraud protection — Anti-fraud checks and security layers are baked into SDK flows
Automatic updates — You benefit from improvements and bug fixes without touching your integration
Faster integration — No need to manually handle WebView setup, edge cases, or command bridges

WebView or direct links should only be used in special cases where SDK usage is not possible (e.g., HTML-based apps, low-code platforms). Even then, you must strictly follow the rules in this guide to ensure reliability.

Your offerwall can be integrated either with our SDK or by embedding the URL directly via WebView. If you’re using WebView or direct links, please follow the instructions below to avoid common issues.

1. Building the Offerwall URL

You must append correct parameters to ensure tracking and reward delivery.

Base URL:

https://sdk.mychips.io/content

Required Parameters:

content_id – your assigned adunit ID
user_id – a unique user ID on your side (can be a hash or UUID or numeric)
webview – bool

Optional But Highly Recommended

gaid– Google Advertising ID is a unique, randomly generated identifier assigned by Google to Android devices, which enables advertisers to track and measure users’ advertising interactions across apps and services.
idfa– Identifier for Advertisers is a unique, randomly generated code that Apple assigns to each user’s device, allowing advertisers to monitor and analyze advertising-related activity.
gender – m, f, or o
age – user age (numeric 0-100)
os_version – version of the os

Final URL Example for iOS users:

https://sdk.mychips.io/content?content_id={your_adunit_id]&user_id={your_user_id}&idfa={your_user_idfa}&age={your_user_age}&gender={your_user_gender}&webview=1

Example final URL with values replaced for iOS users:

https://sdk.mychips.io/content?content_id=28617c7e-0178-4b89-b258-74bcf171e&user_id=5d41402abc4b2a76b9719d911017c592&idfa=AEBE52E7-03EE-455A-B3C4-E57283966239&age=27&gender=f&webview=1

Final URL Example for ANDROID users:

https://sdk.mychips.io/content?content_id={your_adunit_id]&user_id={your_user_id}&gaid={your_user_gaid}&age={your_user_age}&gender={your_user_gender}&webview=1

Example final URL with values replaced for ANDROID users:

https://sdk.mychips.io/content?content_id=28617c7e-0178-4b89-b258-74bcf171e&user_id=5d41402abc4b2a76b9719d911017c592&gaid=9b2f0c84-17a3-4f19-9c51-3e8b0a7c3c91&age=27&gender=f&webview=1

Best Practice WebView

These must be followed when integrating the offerwall via WebView or a direct link. Failure to implement them may result in broken reward flows, missing tracking, or bad UX.

✅ Rule

❓ Why It Matters

🛠 What to Do

content_id & user_id &webview=1 are mandatory

Without them, users can't be identified and rewards can't be tracked

Append both in the URL: ?content_id=...&user_id=...

gaid &idfa are highly recommended.

We highly recommend including the GAID or IDFA parameter, depending on the platform, as this helps improve eCPM performance.

Append the parameter to the URL depending on the platform:

iOS: ?idfa=...
Android: ?gaid=...

Enable JavaScript in WebView

Required for rendering and logic of the offerwall

webView.getSettings().setJavaScriptEnabled(true);

Enable DOM Storage

Enables session/localStorage — often used by the offerwall

webView.getSettings().setDomStorageEnabled(true);

Disable WebView cache

Prevents bugs from loading outdated or broken content

webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);

Open api.mychips.io/redirect URLs in external browser

These are used for conversion tracking and if not well implemented could affect trackability

Open External Browser

Handle mychips:// URL scheme

Bridge used by offerwall to trigger native logic (e.g. reward sync)

override and ignore this schema

Add a custom error page on failure

Prevents user from seeing a blank screen when offline or error occurs

Override onReceivedError() and show fallback HTML content

Implement proper back navigation logic

Prevents broken UX and enables going back within the WebView

close activity on back press when url contains "home"

Support file uploads in WebView

support require file/image upload/

Use WebChromeClient.onShowFileChooser() and route result back via onActivityResult()

Do not preload

preloading will affect impression tracking and impact eCPM negatively

Code Example

Below are sample codes for different languages.

Note: Replace the values of the Offerwall URL parameters with your actual data. The values used in the code example are for demonstration purposes only.

// Initialize the WebView and configure it
WebView webView = findViewById(R.id.webview);
webView.getSettings().setJavaScriptEnabled(true);
webView.getSettings().setDomStorageEnabled(true);
webView.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE);

webView.setWebViewClient(new WebViewClient() {
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        // External link handling
        if(url.contains("api.mychips.io/redirect")) {
            Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
            startActivity(intent);
            return true;
        }
        // Custom scheme handling
        if(url.startsWith("mychips://")) {
            // Trigger native logic here (e.g., reward synchronization)
            return true;
        }
        return false;
    }
    
    @Override
    public void onReceivedError(WebView view, WebResourceRequest request, WebResourceError error) {
        // Load error page
        view.loadData("<html><body><h3>Failed to load. Please try again later.</h3></body></html>", "text/html", "UTF-8");
    }
});

String url = "https://sdk.mychips.io/content?content_id=28617c7e-0178-4b89-b258-74bcf171e&user_id=5d41402abc4b2a76b9719d911017c592&gaid=9b2f0c84-17a3-4f19-9c51-3e8b0a7c3c91&age=27&gender=f&webview=1";
webView.loadUrl(url);

// Initialize the WebView and configure it
val webView = findViewById<WebView>(R.id.webview)
webView.settings.apply {
    javaScriptEnabled = true
    domStorageEnabled = true
    cacheMode = WebSettings.LOAD_NO_CACHE
}

webView.webViewClient = object : WebViewClient() {
    override fun shouldOverrideUrlLoading(view: WebView?, url: String?): Boolean {
        url?.let {
            if(it.contains("api.mychips.io/redirect")){
                startActivity(Intent(Intent.ACTION_VIEW, Uri.parse(it)))
                return true
            }
            if(it.startsWith("mychips://")){
                // Handle native logic here, e.g., reward synchronization
                return true
            }
        }
        return false
    }
    
    override fun onReceivedError(view: WebView?, request: WebResourceRequest?, error: WebResourceError?) {
        view?.loadData("<html><body><h3>Failed to load. Please try again later.</h3></body></html>", "text/html", "UTF-8")
    }
}

val url = "https://sdk.mychips.io/content?content_id=28617c7e-0178-4b89-b258-74bcf171e&user_id=5d41402abc4b2a76b9719d911017c592&gaid=9b2f0c84-17a3-4f19-9c51-3e8b0a7c3c91&age=27&gender=f&webview=1"
webView.loadUrl(url)

import 'dart:io';
import 'package:flutter/material.dart';
import 'package:webview_flutter/webview_flutter.dart';
import 'package:url_launcher/url_launcher.dart';

void main() {
  WidgetsFlutterBinding.ensureInitialized();
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Offerwall Demo',
      theme: ThemeData(primarySwatch: Colors.blue),
      home: const OfferwallPage(),
    );
  }
}

class OfferwallPage extends StatefulWidget {
  const OfferwallPage({super.key});
  @override
  State<OfferwallPage> createState() => _OfferwallPageState();
}

class _OfferwallPageState extends State<OfferwallPage> {
  late final WebViewController _controller;

  // 用提供的数据拼出 URL
  final String offerwallUrl = Uri.https(
    'sdk.mychips.io',
    '/content',
    {
      'content_id': '28617c7e-0178-4b89-b258-74bcf171e',
      'user_id': '5d41402abc4b2a76b9719d911017c592',
      'gaid': '9b2f0c84-17a3-4f19-9c51-3e8b0a7c3c91',
      'age': '27',
      'gender': 'f',
      'webview': '1',
    },
  ).toString();

  bool _isLoading = true;

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

    _controller = WebViewController()
      ..setJavaScriptMode(JavaScriptMode.unrestricted)
      ..clearCache()
      ..clearLocalStorage()
      ..setBackgroundColor(const Color(0x00000000))
      ..setNavigationDelegate(
        NavigationDelegate(
          onPageStarted: (String url) {
            setState(() => _isLoading = true);
          },
          onPageFinished: (String url) {
            setState(() => _isLoading = false);
          },
          onNavigationRequest: (NavigationRequest request) async {
            final url = request.url;

            // 自定义 scheme：奖励同步
            if (url.startsWith('mychips://')) {
              _syncRewardFromUri(url);
              return NavigationDecision.prevent;
            }

            // 外部链接交给系统浏览器/应用商店
            if (url.contains('/redirect') ||
                url.contains('play.google.com/store') ||
                url.startsWith('market://')) {
              final uri = Uri.parse(url);
              if (await canLaunchUrl(uri)) {
                await launchUrl(uri, mode: LaunchMode.externalApplication);
              }
              return NavigationDecision.prevent;
            }

            // 其他在 WebView 内加载
            return NavigationDecision.navigate;
          },
          onWebResourceError: (WebResourceError error) {
            _controller.loadHtmlString(
              '<html><body><h3>Failed to load. Please try again later.</h3></body></html>',
            );
          },
        ),
      )
      ..loadRequest(Uri.parse(offerwallUrl));
  }

  /// 奖励同步逻辑（示例）
  void _syncRewardFromUri(String uriString) {
    final uri = Uri.parse(uriString);
    final amount = uri.queryParameters['amount'];
    final currency = uri.queryParameters['currency'];

    if (amount != null && currency != null) {
      ScaffoldMessenger.of(context).showSnackBar(
        SnackBar(content: Text('You received $amount $currency')),
      );
      // TODO: 本地记账／余额更新逻辑
    }
  }

  @override
  Widget build(BuildContext context) {
    return WillPopScope(
      onWillPop: () async {
        final currentUrl = await _controller.currentUrl() ?? '';
        if (currentUrl.contains('/home')) {
          return true;
        }
        if (await _controller.canGoBack()) {
          _controller.goBack();
          return false;
        }
        return true;
      },
      child: Scaffold(
        appBar: AppBar(
          title: const Text('Offerwall'),
          leading: IconButton(
            icon: const Icon(Icons.arrow_back),
            onPressed: () async {
              if (await _controller.canGoBack()) {
                _controller.goBack();
              } else {
                Navigator.of(context).pop();
              }
            },
          ),
        ),
        body: Stack(
          children: [
            WebViewWidget(controller: _controller),
            if (_isLoading)
              const Center(child: CircularProgressIndicator()),
          ],
        ),
      ),
    );
  }
}

import UIKit
import WebKit

class OfferwallViewController: UIViewController, WKNavigationDelegate {
    var webView: WKWebView!
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let webConfiguration = WKWebViewConfiguration()
        webConfiguration.preferences.javaScriptEnabled = true
        // Use non-persistent data storage to disable caching
        webConfiguration.websiteDataStore = .nonPersistent()
        
        webView = WKWebView(frame: self.view.frame, configuration: webConfiguration)
        webView.navigationDelegate = self
        self.view.addSubview(webView)
        
        if let url = URL(string: "https://sdk.mychips.io/content?content_id=28617c7e-0178-4b89-b258-74bcf171e&user_id=5d41402abc4b2a76b9719d911017c592&idfa=AEBE52E7-03EE-455A-B3C4-E57283966239&age=27&gender=f&webview=1") {
            let request = URLRequest(url: url)
            webView.load(request)
        }
    }
    
    // Display an error page if loading fails
    func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
        let errorHTML = "<html><body><h3>Failed to load. Please try again later.</h3></body></html>"
        webView.loadHTMLString(errorHTML, baseURL: nil)
    }
    
    // Handle external links and custom URL schemes
    func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction,
                 decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) {
        if let urlString = navigationAction.request.url?.absoluteString {
            if urlString.contains("api.mychips.io/redirect") {
                if let redirectUrl = URL(string: urlString) {
                    UIApplication.shared.open(redirectUrl)
                    decisionHandler(.cancel)
                    return
                }
            }
            if urlString.hasPrefix("mychips://") {
                // Handle native logic here, e.g., reward synchronization
                decisionHandler(.cancel)
                return
            }
        }
        decisionHandler(.allow)
    }
}

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