add share file to TMail on iOS

ios/Runner/AppDelegate.swift

@@ -1,19 +1,37 @@
 import UIKit
 import Flutter
 import flutter_downloader
+import receive_sharing_intent
 
 @UIApplicationMain
 @objc class AppDelegate: FlutterAppDelegate {
-  override func application(
-    _ application: UIApplication,
-    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
-  ) -> Bool {
-    GeneratedPluginRegistrant.register(with: self)
-    FlutterDownloaderPlugin.setPluginRegistrantCallback { registry in
-      if (!registry.hasPlugin("FlutterDownloaderPlugin")) {
-        FlutterDownloaderPlugin.register(with: registry.registrar(forPlugin: "FlutterDownloaderPlugin")!)
-      }
+    override func application(
+        _ application: UIApplication,
+        didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
+    ) -> Bool {
+        GeneratedPluginRegistrant.register(with: self)
+        FlutterDownloaderPlugin.setPluginRegistrantCallback { registry in
+            if (!registry.hasPlugin("FlutterDownloaderPlugin")) {
+                FlutterDownloaderPlugin.register(with: registry.registrar(forPlugin: "FlutterDownloaderPlugin")!)
+            }
+        }
+        return super.application(application, didFinishLaunchingWithOptions: launchOptions)
     }
-    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
-  }
+    
+    override func application(_ app: UIApplication, open url: URL, options: [UIApplication.OpenURLOptionsKey : Any] = [:]) -> Bool {
+        let sharingIntent = SwiftReceiveSharingIntentPlugin.instance
+        if sharingIntent.hasMatchingSchemePrefix(url: url) {
+            return sharingIntent.application(app, open: url, options: options)
+        }
+        
+         // For example load MSALPublicClientApplication
+         // return MSALPublicClientApplication.handleMSALResponse(url, sourceApplication: options[.sourceApplication] as? String)
+
+         // Cancel url handling
+         // return false
+
+         // Proceed url handling for other Flutter libraries like uni_links
+         return super.application(app, open: url, options:options)
+    }
+    
 }