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44 lines
1.3 KiB
44 lines
1.3 KiB
// Copyright 2021 The Flutter team. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import Flutter
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import UIKit
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/// UIViewController associated with the NativeViewCount storyboard scene.
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class HostViewController: UIViewController, DataModelObserver {
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@IBOutlet weak var countView: UILabel!
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deinit {
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DataModel.shared.removeObserver(observer: self)
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}
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func onCountUpdate(newCount: Int64) {
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self.countView.text = String(format: "%d", newCount)
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}
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override func viewDidLoad() {
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super.viewDidLoad()
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DataModel.shared.addObserver(observer: self)
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onCountUpdate(newCount: DataModel.shared.count)
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}
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@IBAction func onAddCount() {
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DataModel.shared.count = DataModel.shared.count + 1
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}
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@IBAction func onNext() {
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let navController = self.navigationController!
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// Based on the number of view controllers in the stack we push a
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// SingleFlutterViewController or DoubleFlutterViewController to alternatve
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// between the two.
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if navController.viewControllers.count % 4 == 1 {
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let vc = SingleFlutterViewController(withEntrypoint: nil)
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navController.pushViewController(vc, animated: true)
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} else {
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let vc = DoubleFlutterViewController()
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navController.pushViewController(vc, animated: true)
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}
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}
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}
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