flutter/dev/integration_tests/wide_gamut_test/ios/Runner/AppDelegate.swift

// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import Foundation
import UIKit
import Flutter

class FLNativeViewFactory: NSObject, FlutterPlatformViewFactory {
    private var messenger: FlutterBinaryMessenger

    init(messenger: FlutterBinaryMessenger) {
        self.messenger = messenger
        super.init()
    }

    func create(
        withFrame frame: CGRect,
        viewIdentifier viewId: Int64,
        arguments args: Any?
    ) -> FlutterPlatformView {
        return FLNativeView(
            frame: frame,
            viewIdentifier: viewId,
            arguments: args,
            binaryMessenger: messenger)
    }

    public func createArgsCodec() -> FlutterMessageCodec & NSObjectProtocol {
          return FlutterStandardMessageCodec.sharedInstance()
    }
}

class SolidColorView: UIView {
  override init(frame: CGRect) {
    super.init(frame: frame)
    setupView()
  }

  required init?(coder aDecoder: NSCoder) {
    super.init(coder: aDecoder)
    setupView()
  }

  private func setupView() {
    backgroundColor = .blue
  }
}


class FLNativeView: NSObject, FlutterPlatformView {
    private var childView: UIView

    init(
        frame: CGRect,
        viewIdentifier viewId: Int64,
        arguments args: Any?,
        binaryMessenger messenger: FlutterBinaryMessenger?
    ) {
        childView = SolidColorView()
        super.init()
    }

    func view() -> UIView {
        return childView
    }
}

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    GeneratedPluginRegistrant.register(with: self)

    var registrar = self.registrar(forPlugin: "plugin-name")

    let factory = FLNativeViewFactory(messenger: registrar!.messenger())
    self.registrar(forPlugin: "<plugin-name>")!.register(
        factory,
        withId: "<dummy-view>")

    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }
}