[iOS] regression: Hot Restart with a Platform View on a Navigator push throws PlatformException "recreating_view"

### Steps to reproduce

`flutter create a_platform_view --platforms=ios --template=plugin`
edit example/lib/main.dart -- Navigator push a UiKitView
edit plugin swift code -- a simple PlatformView with a UIView/UILabel
`flutter run`
Tap "Open" to push the UiKitView
"R" to Hot Restart
Tap "Open" to push the UiKitView
=>
```
[ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: PlatformException(recreating_view, trying to create an already created view, view id: '0', null)
```
This worked in 3.24.3 (the code works as expected with no PlatformException). It fails in 3.27.2 and on current main, though I haven't tracked down the precise build where it started failing.


### Expected results

Hot Restart should restore the state of the app so it can run fresh.

### Actual results

When you press the "Open" button after the Hot Restart (which pushes a new UiKitView), an exception is thrown.

```
Performing hot restart...                                               
Restarted application in 306ms.
[ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: PlatformException(recreating_view, trying to create an already created view, view id: '0', null)
#0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:646:7)
#1      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:334:18)
<asynchronous suspension>
#2      PlatformViewsService.initUiKitView (package:flutter/src/services/platform_views.dart:248:5)
<asynchronous suspension>
#3      _DarwinViewState._createNewUiKitView (package:flutter/src/widgets/platform_view.dart:921:36)
<asynchronous suspension>
```

### Code sample

<details open><summary>example/lib/main.dart</summary>

```dart
import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(home: const MyApp()));
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: SafeArea(
        child: Center(
          child: ElevatedButton(
            onPressed: () {
              Navigator.of(context).push(
                MaterialPageRoute(
                  builder: (_) => UiKitView(viewType: 'a_platform_view'),
                ),
              );
            },
            child: Text('Open'),
          ),
        ),
      ),
    );
  }
}

// flutter create a_platform_view --platforms=ios --template=plugin
// edit ios/Classes/APlatformViewPlugin.swift
// edit example/lib/main.dart
// cd example
// flutter run
//
// Tap Open, Hot Restart, tap Open =>
//
// [ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: PlatformException(recreating_view, trying to create an already created view, view id: '0', null)
// #0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:652:7)
// #1      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:370:18)
// <asynchronous suspension>
// #2      PlatformViewsService.initUiKitView (package:flutter/src/services/platform_views.dart:270:5)
// <asynchronous suspension>
// #3      _DarwinViewState._createNewUiKitView (package:flutter/src/widgets/platform_view.dart:933:36)
// <asynchronous suspension>
//
//
// 3.24.3: works fine
// 3.27.2: fails
```

</details>

<details open><summary>ios/Classes/APlatformViewPlugin.swift</summary>

```swift
import Flutter
import UIKit

public class APlatformViewPlugin: NSObject, FlutterPlugin {
  public static func register(with registrar: FlutterPluginRegistrar) {
    let channel = FlutterMethodChannel(name: "a_platform_view", binaryMessenger: registrar.messenger())
    let instance = APlatformViewPlugin()
    registrar.addMethodCallDelegate(instance, channel: channel)

    let factory = FLNativeViewFactory()
      registrar.register(factory, withId: "a_platform_view")
  }

  public func handle(_ call: FlutterMethodCall, result: @escaping FlutterResult) {
    result(FlutterMethodNotImplemented)
  }
}

class FLNativeViewFactory: NSObject, FlutterPlatformViewFactory {
    func create(
        withFrame frame: CGRect,
        viewIdentifier viewId: Int64,
        arguments args: Any?
    ) -> FlutterPlatformView {
        return FLNativeView(
            frame: frame,
            viewIdentifier: viewId,
            arguments: args
            )
    }
}

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

    init(
        frame: CGRect,
        viewIdentifier viewId: Int64,
        arguments args: Any?
    ) {
        _view = UIView()
        super.init()
        _view.backgroundColor = UIColor.blue
        let nativeLabel = UILabel()
        nativeLabel.text = "Native text from iOS"
        nativeLabel.textColor = UIColor.white
        nativeLabel.frame = CGRect(x: 0, y: 0, width: 180, height: 48.0)
        _view.addSubview(nativeLabel)
    }

    func view() -> UIView {
        return _view
    }
}
```
</details>


### Screenshots or Video

<details open>
<summary>Screenshots / Video demonstration</summary>

[Upload media here]

</details>


### Logs

<details open><summary>Logs</summary>

```console
example % /usr/local/flutter/flutter/old/3.27.2/bin/flutter run -d iPhone
Resolving dependencies... 
Downloading packages... 
  async 2.11.0 (2.13.0 available)
  boolean_selector 2.1.1 (2.1.2 available)
  characters 1.3.0 (1.4.0 available)
  clock 1.1.1 (1.1.2 available)
> collection 1.19.0 (was 1.18.0) (1.19.1 available)
  fake_async 1.3.1 (1.3.3 available)
  file 7.0.0 (7.0.1 available)
> leak_tracker 10.0.7 (was 10.0.5) (10.0.9 available)
> leak_tracker_flutter_testing 3.0.8 (was 3.0.5) (3.0.9 available)
  lints 5.0.0 (5.1.1 available)
  matcher 0.12.16+1 (0.12.17 available)
  material_color_utilities 0.11.1 (0.12.0 available)
  meta 1.15.0 (1.16.0 available)
  path 1.9.0 (1.9.1 available)
  platform 3.1.5 (3.1.6 available)
  process 5.0.2 (5.0.3 available)
< sky_engine 0.0.0 from sdk flutter (was 0.0.99 from sdk flutter)
  source_span 1.10.0 (1.10.1 available)
> stack_trace 1.12.0 (was 1.11.1) (1.12.1 available)
  stream_channel 2.1.2 (2.1.4 available)
> string_scanner 1.3.0 (was 1.2.0) (1.4.1 available)
  term_glyph 1.2.1 (1.2.2 available)
> test_api 0.7.3 (was 0.7.2) (0.7.4 available)
> vm_service 14.3.0 (was 14.2.5) (15.0.0 available)
> webdriver 3.0.4 (was 3.0.3) (3.1.0 available)
Changed 9 dependencies!
24 packages have newer versions incompatible with dependency constraints.
Try `flutter pub outdated` for more information.
Launching lib/main.dart on iPhone 15 Pro Max iOS17.2 in debug mode...
Warning: Missing build name (CFBundleShortVersionString).
Warning: Missing build number (CFBundleVersion).
Action Required: You must set a build name and number in the pubspec.yaml file version field before submitting to the App Store.
Running pod install...                                             737ms
Running Xcode build...                                                  
 └─Compiling, linking and signing...                      2,335ms
Xcode build done.                                           10.7s
Syncing files to device iPhone 15 Pro Max iOS17.2...                41ms

Flutter run key commands.
r Hot reload. 🔥🔥🔥
R Hot restart.
h List all available interactive commands.
d Detach (terminate "flutter run" but leave application running).
c Clear the screen
q Quit (terminate the application on the device).

A Dart VM Service on iPhone 15 Pro Max iOS17.2 is available at: http://127.0.0.1:53020/eX4mEMcChqA=/
The Flutter DevTools debugger and profiler on iPhone 15 Pro Max iOS17.2 is available at:
http://127.0.0.1:9101?uri=http://127.0.0.1:53020/eX4mEMcChqA=/

Performing hot restart...                                               
Restarted application in 306ms.
[ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: PlatformException(recreating_view, trying to create an already created view, view id: '0', null)
#0      StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:646:7)
#1      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:334:18)
<asynchronous suspension>
#2      PlatformViewsService.initUiKitView (package:flutter/src/services/platform_views.dart:248:5)
<asynchronous suspension>
#3      _DarwinViewState._createNewUiKitView (package:flutter/src/widgets/platform_view.dart:921:36)
<asynchronous suspension>
Application finished.
```

</details>


### Flutter Doctor output

<details open><summary>Doctor output</summary>

```console
example % /usr/local/flutter/flutter/old/3.27.2/bin/flutter doctor -v
[!] Flutter (Channel stable, 3.27.2, on macOS 14.7.4 23H420 darwin-arm64, locale en-US)
    • Flutter version 3.27.2 on channel stable at /usr/local/flutter/flutter/old/3.27.2
    ! The flutter binary is not on your path. Consider adding /usr/local/flutter/flutter/old/3.27.2/bin to your path.
    ! The dart binary is not on your path. Consider adding /usr/local/flutter/flutter/old/3.27.2/bin to your path.
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 68415ad1d9 (6 weeks ago), 2025-01-13 10:22:03 -0800
    • Engine revision e672b006cb
    • Dart version 3.6.1
    • DevTools version 2.40.2
    • If those were intentional, you can disregard the above warnings; however it is recommended to use "git" directly to perform update checks and
      upgrades.

[✓] Android toolchain - develop for Android devices (Android SDK version 34.0.0)
    • Android SDK at /Users/Pau12893/Library/Android/sdk
    • Platform android-35, build-tools 34.0.0
    • Java binary at: /Applications/Android Studio_2023.3.1.18.app/Contents/jbr/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 17.0.10+0-17.0.10b1087.21-11572160)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 16.2)
    • Xcode at /Applications/Xcode_16.2.0.app/Contents/Developer
    • Build 16C5032a
    • CocoaPods version 1.16.2

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2023.1)
    • Android Studio at /Applications/Android Studio_2023.1.1.27.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 17.0.7+0-17.0.7b1000.6-10550314)

[✓] Android Studio (version 2023.3)
    • Android Studio at /Applications/Android Studio_2023.3.1.18.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 17.0.10+0-17.0.10b1087.21-11572160)

[✓] VS Code (version 1.97.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.104.0

[✓] Connected device (6 available)
    • Pixel 6 (mobile)                   • 26101FDF6005Z5                       • android-arm64  • Android 15 (API 35)
    • Paul’s iPhone (mobile)             • 00008110-0010449E0C45401E            • ios            • iOS 18.3.1 22D72
    • iPhone 15 Pro Max iOS17.2 (mobile) • 21F6081D-57F7-4550-9E59-BDCC87832EA7 • ios            • com.apple.CoreSimulator.SimRuntime.iOS-17-2
      (simulator)
    • macOS (desktop)                    • macos                                • darwin-arm64   • macOS 14.7.4 23H420 darwin-arm64
    • Mac Designed for iPad (desktop)    • mac-designed-for-ipad                • darwin         • macOS 14.7.4 23H420 darwin-arm64
    • Chrome (web)                       • chrome                               • web-javascript • Google Chrome 133.0.6943.127

[✓] Network resources
    • All expected network resources are available.

! Doctor found issues in 1 category.
```

</details>


Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

[iOS] regression: Hot Restart with a Platform View on a Navigator push throws PlatformException "recreating_view" #163935

Steps to reproduce

Expected results

Actual results

Code sample

Screenshots or Video

Logs

Flutter Doctor output

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

[iOS] regression: Hot Restart with a Platform View on a Navigator push throws PlatformException "recreating_view" #163935

Description

Steps to reproduce

Expected results

Actual results

Code sample

Screenshots or Video

Logs

Flutter Doctor output

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions