lemnisk_flutter

The Lemnisk Flutter plugin is a thin wrapper over the Lemnisk Android and iOS native SDKs. It lets you track user event data from your Flutter app and deliver real-time personalized push notifications and in-app campaigns.

Installation

Add the plugin to your pubspec.yaml and run flutter pub get.

The plugin depends on the native SDKs:

  • Android: co.lemnisk.app.android:AndroidSDK:1.2.0
  • iOS: Lemnisk-iOS-SDK 3.10.0

Usage

Import the plugin:

import 'package:lemnisk_flutter/flutter_wrapper_method_channel.dart';

Event tracking

await LemniskFlutter.track('product_viewed', {'sku': 'ABC123'});
await LemniskFlutter.screen('Product Page', {'category': 'shoes'});
await LemniskFlutter.identify('user123', {'email': 'a@b.com'});

Push notifications

final result = await LemniskFlutter.registerForPushNotifications(null, null);

// Observe notification taps
LemniskFlutter.onNotificationTapped.listen((data) {
  // handle the deeplink / payload
});

In-app campaigns

In-app popups render natively — there is nothing to render on the Flutter side. Two sets of controls let you tune when they appear.

Context — drives in-app campaign context conditions. Set it to a stable identifier for the part of the app the user is in (for example the active tab or section), and clear it when it no longer applies:

await LemniskFlutter.setContext('wishlist');
// ...
await LemniskFlutter.clearContext();

Pause / resume — suppress in-app popups on screens where they would be disruptive (checkout, video playback, etc.), then re-enable them:

await LemniskFlutter.pauseInApp();
// ...
await LemniskFlutter.resumeInApp();

Readiness check

final ready = await LemniskFlutter.isInitialized();

With auto-init this is normally already true by the time Dart runs, since the native SDK configures itself at launch (see below). Useful as a defensive guard.

Configuration & auto-initialization

Lemnisk configures itself from native config files — AndroidManifest.xml on Android and Info.plist on iOS. There is no Dart configure() call: the native SDKs initialize automatically at app launch (Android via a ContentProvider that runs before Application.onCreate; iOS via a launch observer during didFinishLaunching). Both fire before the Flutter engine is up, which is why the config must live in the native files — this is the same model Firebase uses (google-services.json / GoogleService-Info.plist).

You configure the same logical key set once per platform. The key names differ by platform (Android uses dotted Lemnisk.* meta-data; iOS uses flat Lemnisk* keys).

Android — android/app/src/main/AndroidManifest.xml

Add inside <application>:

<meta-data android:name="Lemnisk.WRITE_KEY"      android:value="YOUR_WRITE_KEY" />
<meta-data android:name="Lemnisk.SERVER_URL"     android:value="https://tpl.lemnisk.co" />
<meta-data android:name="Lemnisk.ENABLE_PUSH"    android:value="true" />
<meta-data android:name="Lemnisk.ENABLE_INAPP"   android:value="true" />
<meta-data android:name="Lemnisk.DEBUG_MODE"     android:value="true" />
<!-- optional: Lemnisk.Consent_URL, Lemnisk.ENABLE_ANALYTICS,
     Lemnisk.ENABLE_PULL_NOTIFICATIONS, Lemnisk.ENABLE_GEOFENCE, Lemnisk.ENABLE_BP,
     Lemnisk.ADSERVER_URL, Lemnisk.NOTIFICATION_CENTER_URL, Lemnisk.NOTIFICATION_ICON,
     App.DeepLinkPrefix -->

Auto-init arms only when Lemnisk.WRITE_KEY is present. To keep the keys but opt out of auto-init, set <meta-data android:name="Lemnisk.AUTO_INIT" android:value="false" /> (absent or true → auto-init runs — same semantics as iOS LemniskAutoInit).

iOS — ios/Runner/Info.plist

<key>LemniskWriteKey</key>            <string>YOUR_WRITE_KEY</string>
<key>LemniskServerUrl</key>           <string>https://tpl.lemnisk.co</string>
<key>LemniskPushEnabled</key>         <true/>
<key>LemniskInAppEnabled</key>        <true/>
<key>LemniskAnalyticsEnabled</key>    <true/>
<!-- optional: LemniskAppGroupId, LemniskNotificationCenterUrl,
     LemniskConsentServerUrl -->

Auto-init arms when both LemniskWriteKey and LemniskServerUrl are present. Set <key>LemniskAutoInit</key><false/> to opt out without removing the keys.

Logical key mapping

Purpose Android meta-data iOS Info.plist
Write key (arms init) Lemnisk.WRITE_KEY LemniskWriteKey
Server URL Lemnisk.SERVER_URL LemniskServerUrl
Push enabled Lemnisk.ENABLE_PUSH LemniskPushEnabled
In-app enabled Lemnisk.ENABLE_INAPP LemniskInAppEnabled
Analytics enabled Lemnisk.ENABLE_ANALYTICS LemniskAnalyticsEnabled
App group id (n/a) LemniskAppGroupId
Notification-center URL Lemnisk.NOTIFICATION_CENTER_URL LemniskNotificationCenterUrl
Consent URL Lemnisk.Consent_URL LemniskConsentServerUrl
Auto-init opt-out Lemnisk.AUTO_INIT = false LemniskAutoInit = false

iOS push-delegate note

Config (write key, server URL, app group, feature flags) belongs in Info.plist. Any push-handling customization — owning the UNUserNotificationCenter delegate, forwarding notification taps to Flutter, setSwizzleForNotificationCenterDelegates(...) — still lives in your AppDelegate.swift. Do this in didFinishLaunchingWithOptions (it runs before auto-init).

You do not need an explicit Lemnisk.shared.configure(...) call anymore. If you keep one for backward compatibility it must run inside didFinishLaunchingWithOptions (before auto-init), in which case auto-init detects it and stands down — so the SDK still initializes exactly once.

Libraries

flutter_wrapper
flutter_wrapper_method_channel
flutter_wrapper_platform_interface