Deeplink not getting tracked.

packages/core/android/src/main/kotlin/com/segment/analytics/AnalyticsPlugin.kt

@@ -31,10 +31,10 @@ import java.util.*
 val WIDEVINE_UUID = UUID(-0x121074568629b532L, -0x5c37d8232ae2de13L)
 
 /** AnalyticsPlugin */
-class AnalyticsPlugin : FlutterPlugin, NativeContextApi, EventChannel.StreamHandler,  ActivityAware,
+class AnalyticsPlugin : FlutterPlugin, NativeContextApi, EventChannel.StreamHandler, ActivityAware,
     PluginRegistry.NewIntentListener {
     private var context: Context? = null
-
+    private val pendingDeeplinkEventsQueue: Queue<Intent> = LinkedList()
     private fun ByteArray.toHexString() = joinToString("") { "%02x".format(it) }
 
     private val eventsChannel = "analytics/deep_link_events"
@@ -182,13 +182,13 @@ class AnalyticsPlugin : FlutterPlugin, NativeContextApi, EventChannel.StreamHand
     private fun createChangeReceiver(events: EventSink): BroadcastReceiver {
         return object : BroadcastReceiver() {
             override fun onReceive(context: Context?, intent: Intent) {
-                val referringApplication = intent.getStringExtra("referringApplication")
+                val referringApplication = intent.getStringExtra("referring_application")
                 // NOTE: assuming intent.getAction() is Intent.ACTION_VIEW
                 val dataString: String? = intent.dataString
                 if (dataString == null) {
                     events.error("UNAVAILABLE", "Link unavailable", null)
                 } else {
-                    val data = mapOf("url" to dataString, "referringApplication" to referringApplication)
+                    val data = mapOf("url" to dataString, "referring_application" to referringApplication)
                     events.success(data)
                 }
             }
@@ -198,13 +198,30 @@ class AnalyticsPlugin : FlutterPlugin, NativeContextApi, EventChannel.StreamHand
     private fun handleIntent(context: Context, intent: Intent) {
         val action = intent.action
         if (Intent.ACTION_VIEW == action) {
-            if (changeReceiver != null) changeReceiver!!.onReceive(context, intent)
+            if (changeReceiver != null) {
+                changeReceiver!!.onReceive(context, intent)
+            } else {
+                pendingDeeplinkEventsQueue.add(intent.cloneFilter())
+            }
+        }
+    }
+
+    private fun processPendingDeeplinkEventsQueue() {
+        if (this.context == null ||
+            changeReceiver == null
+        ) {
+            return
+        }
+        while (pendingDeeplinkEventsQueue.isNotEmpty()) {
+            val intent = pendingDeeplinkEventsQueue.poll()
+            changeReceiver!!.onReceive(context, intent)
         }
     }
 
     override fun onListen(arguments: Any?, events: EventSink?) {
         if (events != null) {
             this.changeReceiver = createChangeReceiver(events)
+            processPendingDeeplinkEventsQueue()
         }
     }
 
@@ -216,7 +233,10 @@ class AnalyticsPlugin : FlutterPlugin, NativeContextApi, EventChannel.StreamHand
         binding.addOnNewIntentListener(this)
         if (this.context != null) {
             if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP_MR1) {
-                binding.activity.intent.putExtra("referringApplication", binding.activity.referrer.toString())
+                binding.activity.intent.putExtra(
+                    "referring_application",
+                    binding.activity.referrer.toString()
+                )
             }
             this.handleIntent(this.context!!, binding.activity.intent)
         }

packages/core/ios/Classes/AnalyticsPlugin.swift

@@ -3,8 +3,10 @@ import UIKit
 import Foundation
 
 public class AnalyticsPlugin: NSObject, FlutterPlugin, NativeContextApi, FlutterStreamHandler, FlutterApplicationLifeCycleDelegate {
+    private var pendingDeeplinkEventsQueue:[[String:String?]] = []
     public func onListen(withArguments arguments: Any?, eventSink events: @escaping FlutterEventSink) -> FlutterError? {
         _eventSink = events
+        processPendingDeeplinkEventsQueue();
         return nil
     }
 
@@ -14,19 +16,27 @@ public class AnalyticsPlugin: NSObject, FlutterPlugin, NativeContextApi, Flutter
     }
 
     var _eventSink:FlutterEventSink?;
-    public func application(_ application: UIApplication, open url: URL, sourceApplication: String, annotation: Any) -> Bool {
+    public func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool{
+        let sourceApplication = options[.sourceApplication] as? String;
         if (_eventSink != nil) {
-            _eventSink?(["url": url.absoluteString, "referringApplication": sourceApplication])
+            _eventSink?(["url": url.absoluteString, "referring_application": sourceApplication])
+        }else{
+            pendingDeeplinkEventsQueue.append(["url": url.absoluteString, "referring_application": sourceApplication]);
         }
-        return true
+
+
+        return false
     }
-    public func application(_ application: UIApplication, handleOpen url: URL) -> Bool {
-        if (_eventSink != nil) {
-            _eventSink?([url: url.absoluteString])
+
+    private func processPendingDeeplinkEventsQueue() -> Void{
+        if(_eventSink == nil){
+            return;
+        }
+        while(!pendingDeeplinkEventsQueue.isEmpty){
+            let eventData:[String:String?] = pendingDeeplinkEventsQueue.removeFirst();
+            _eventSink?(eventData);
         }
-        return true
     }
-
     internal static var device = VendorSystem.current
 
     func getContext(collectDeviceId: Bool, completion: @escaping (Result<NativeContext, Error>) -> Void) {
@@ -88,10 +98,12 @@ public class AnalyticsPlugin: NSObject, FlutterPlugin, NativeContextApi, Flutter
 
     public static func register(with registrar: FlutterPluginRegistrar) {
         let messenger : FlutterBinaryMessenger = registrar.messenger()
-        let api : NativeContextApi & NSObjectProtocol & AnalyticsPlugin = AnalyticsPlugin.init()
+        let plugin = AnalyticsPlugin.init();
+        let api : NativeContextApi & NSObjectProtocol & AnalyticsPlugin = plugin
         NativeContextApiSetup.setUp(binaryMessenger: messenger, api: api)
 
         let channel:FlutterEventChannel = FlutterEventChannel(name: "analytics/deep_link_events", binaryMessenger: registrar.messenger())
         channel.setStreamHandler(api)
+        registrar.addApplicationDelegate(plugin)
     }
 }

packages/core/lib/state.dart

@@ -360,7 +360,7 @@ class DeepLinkDataState extends PersistedState<DeepLinkData> {
 
 @JsonSerializable(explicitToJson: true, includeIfNull: false)
 class DeepLinkData {
-  final String referringApplication;
+  final String? referringApplication;
   final String url;
 
   DeepLinkData(this.referringApplication, this.url);