feat(ios): add Swift Package Manager support for Core

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Versions
 
+## Unreleased
+
+- iOS: Add Swift Package Manager (SPM) support for the Core integration alongside CocoaPods. Resolves the "plugin does not support Swift Package Manager" warning under Flutter 3.44+. The optional PurchaseConnector subspec remains CocoaPods-only for now (blocked by flutter/flutter#161182). Relates to #364 / #370.
+
 ## 6.18.0
 
 - Updated Android SDK from 6.17.6 to 6.18.0

ios/.gitignore

@@ -34,3 +34,8 @@ Icon?
 .tags*
 
 /Flutter/Generated.xcconfig
+
+# Swift Package Manager
+.build/
+.swiftpm/
+Package.resolved

ios/appsflyer_sdk.podspec

@@ -18,8 +18,8 @@ Pod::Spec.new do |s|
   end
 
   s.subspec 'Core' do |ss|
-    ss.source_files = 'Classes/**/*'
-    ss.public_header_files = 'Classes/**/*.h'
+    ss.source_files = 'appsflyer_sdk/Sources/appsflyer_sdk/**/*.{h,m}'
+    ss.public_header_files = 'appsflyer_sdk/Sources/appsflyer_sdk/include/**/*.h'
     ss.dependency 'Flutter'
     ss.ios.dependency 'AppsFlyerFramework','6.18.0'
   end

ios/appsflyer_sdk/Package.swift

@@ -0,0 +1,41 @@
+// swift-tools-version: 5.9
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+import PackageDescription
+
+// This manifest provides Swift Package Manager support for the AppsFlyer "Core"
+// integration (the default subspec). The optional PurchaseConnector subspec is
+// intentionally NOT included here — it remains CocoaPods-only for now because of
+// the open Flutter limitation tracked in flutter/flutter#161182. Apps that use
+// PurchaseConnector continue to opt in via the $AppsFlyerPurchaseConnector Podfile
+// flag and CocoaPods; everyone else gets SPM support and loses the warning.
+
+let package = Package(
+    name: "appsflyer_sdk",
+    platforms: [
+        .iOS("12.0")
+    ],
+    products: [
+        .library(name: "appsflyer-sdk", targets: ["appsflyer_sdk"])
+    ],
+    dependencies: [
+        // Static variant matches the podspec's `static_framework = true`.
+        // Product "AppsFlyerLib-Static" wraps the binary target "AppsFlyerLib",
+        // so the existing `#import <AppsFlyerLib/AppsFlyerLib.h>` keeps resolving.
+        .package(url: "https://github.com/AppsFlyerSDK/AppsFlyerFramework-Static.git", exact: "6.18.0")
+    ],
+    targets: [
+        .target(
+            name: "appsflyer_sdk",
+            dependencies: [
+                .product(name: "AppsFlyerLib-Static", package: "AppsFlyerFramework-Static")
+            ],
+            // Implementation (.m) files in Sources/appsflyer_sdk/, public headers (.h)
+            // in Sources/appsflyer_sdk/include/appsflyer_sdk/. The header search path
+            // lets the .m/.h files resolve their siblings by bare name.
+            cSettings: [
+                .headerSearchPath("include/appsflyer_sdk")
+            ]
+        )
+    ]
+)