snapshot of https://github.com/flutter/samples.git (main, 2026-09-16; blobs > 131072B omitted)

platform_channels/ios/Runner/AppDelegate.swift

@@ -0,0 +1,89 @@
+// Copyright 2020 The Flutter team. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+import UIKit
+import Flutter
+
+@UIApplicationMain
+@objc class AppDelegate: FlutterAppDelegate {
+    override func application(
+        _ application: UIApplication,
+        didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
+    ) -> Bool {
+        let flutterViewController = window.rootViewController as! FlutterViewController
+        FlutterMethodChannel(name: "methodChannelDemo", binaryMessenger: flutterViewController.binaryMessenger).setMethodCallHandler({
+            (call: FlutterMethodCall, result: FlutterResult) -> Void in
+            
+            guard let count = (call.arguments as? NSDictionary)?["count"] as? Int else {
+                result(FlutterError(code: "INVALID_ARGUMENT", message: "Value of count cannot be null", details: nil))
+                return
+            }
+            
+            switch call.method {
+            case "increment":
+                result(count + 1)
+            case "decrement":
+                result(count - 1)
+            default:
+                result(FlutterMethodNotImplemented)
+            }
+        })
+        
+        FlutterBasicMessageChannel(name: "platformImageDemo", binaryMessenger: flutterViewController.binaryMessenger, codec: FlutterStandardMessageCodec.sharedInstance()).setMessageHandler{
+            (message: Any?, reply: FlutterReply) -> Void in
+            
+            if(message as! String == "getImage") {
+                guard let image = UIImage(named: "eat_new_orleans.jpg") else {
+                    reply(nil)
+                    return
+                }
+                
+                reply(FlutterStandardTypedData(bytes: image.jpegData(compressionQuality: 1)!))
+            }
+        }
+        
+        FlutterEventChannel(name: "eventChannelDemo", binaryMessenger: flutterViewController.binaryMessenger).setStreamHandler(AccelerometerStreamHandler())
+        
+        var petList : [[String:String]] = []
+        
+        // A FlutterBasicMessageChannel for sending petList to Dart.
+        let stringCodecChannel = FlutterBasicMessageChannel(name: "stringCodecDemo", binaryMessenger: flutterViewController.binaryMessenger, codec: FlutterStringCodec.sharedInstance())
+        
+        // Registers a MessageHandler for FlutterBasicMessageChannel to receive pet details.
+        FlutterBasicMessageChannel(name: "jsonMessageCodecDemo", binaryMessenger: flutterViewController.binaryMessenger, codec: FlutterJSONMessageCodec.sharedInstance())
+            .setMessageHandler{(message: Any?, reply: FlutterReply) -> Void in
+                petList.insert(message! as! [String: String], at: 0)
+                stringCodecChannel.sendMessage(self.convertPetListToJson(petList: petList))
+            }
+        
+        // Registers a MessageHandler for FlutterBasicMessageHandler to receive indices of detail records to remove from the petList.
+        FlutterBasicMessageChannel(name: "binaryCodecDemo", binaryMessenger: flutterViewController.binaryMessenger, codec: FlutterBinaryCodec.sharedInstance()).setMessageHandler{
+            (message: Any?, reply: FlutterReply) -> Void in
+            
+            guard let index = Int.init(String.init(data: message! as! Data, encoding: String.Encoding.utf8)!) else {
+                reply(nil)
+                return
+            }
+            
+            if (index >= 0 && index < petList.count) {
+                petList.remove(at: index)
+                reply("Removed Successfully".data(using: .utf8)!)
+                stringCodecChannel.sendMessage(self.convertPetListToJson(petList: petList))
+            } else {
+                reply(nil)
+            }
+        }
+        
+        GeneratedPluginRegistrant.register(with: self)
+        return super.application(application, didFinishLaunchingWithOptions: launchOptions)
+    }
+    
+    // Function to convert petList to json string.
+    func convertPetListToJson(petList: [[String: String]]) -> String? {
+        guard let data = try? JSONSerialization.data(withJSONObject: ["petList": petList], options: .prettyPrinted) else {
+            return nil
+        }
+        return String(data: data, encoding: String.Encoding.utf8)
+    }
+}