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[macOS] UiKitView throws a "PlatformException(recreating_view, trying to create an already created view, view id: '0', null)" after hot-restart #110381

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[macOS] UiKitView throws a "PlatformException(recreating_view, trying to create an already created view, view id: '0', null)" after hot-restart#110381
Labels
P2Important issues not at the top of the work lista: platform-viewsEmbedding Android/iOS views in Flutter appsc: crashStack traces logged to the consoleengineflutter/engine related. See also e: labels.found in release: 3.0Found to occur in 3.0found in release: 3.1Found to occur in 3.1has reproducible stepsThe issue has been confirmed reproducible and is ready to work onplatform-macosBuilding on or for macOS specificallyr: fixedIssue is closed as already fixed in a newer versionteam-engineOwned by Engine teamtriaged-engineTriaged by Engine team

Description

@akaboshinit
akaboshinit
opened on Aug 26, 2022

Steps to Reproduce

  1. Execute flutter run on the code sample
  2. Whenever I develop with UIKitView on macOS and restart, I get [ERROR:flutter/lib/ui/ui_dart_state.cc(198)] Unhandled Exception: PlatformException(recreating_view, trying to create an already created view, view This error occurs. Trying to insert a key or use a unique key for key does not solve the problem.

Expected results:
Ability to restart correctly during development

Actual results:
Duplicate id not reset correctly and error occurs.

I have an idea of the problem, and it's in the error, but it's a duplicate id!
I found an implementation that is issuing ids, but they are either resetting unexpectedly or issuing incorrect ids.

flutter/3.0.5-stable/packages/flutter/lib/src/widgets/platform_view.dart

class PlatformViewsRegistry {
  PlatformViewsRegistry._instance();

  // Always non-negative. The id value -1 is used in the accessibility bridge
  // to indicate the absence of a platform view.
  int _nextPlatformViewId = 0;

  /// Allocates a unique identifier for a platform view.
  ///
  /// A platform view identifier can refer to a platform view that was never created,
  /// a platform view that was disposed, or a platform view that is alive.
  ///
  /// Typically a platform view identifier is passed to a platform view widget
  /// which creates the platform view and manages its lifecycle.
  int getNextPlatformViewId() => _nextPlatformViewId++;
}
Code sample 
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);
  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  InlineWebViewMacOsController? _controller;

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            const Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headline4,
            ),
            const UIKitViewErrorMacOsWidget()
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ),
    );
  }
}

class UIKitViewErrorMacOsWidget extends StatelessWidget {
  const UIKitViewErrorMacOsWidget({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    if (defaultTargetPlatform == TargetPlatform.macOS) {
      return SizedBox(
        width: 200,
        height: 200,
        child: UiKitView(
          key: key,
          viewType: 'uikitview_error_macos_view',
        ),
      );
    }

    return const SizedBox();
  }
}

import Cocoa
import FlutterMacOS

class MainFlutterWindow: NSWindow {
  override func awakeFromNib() {
    let flutterViewController = FlutterViewController.init()
    let windowFrame = self.frame
    self.contentViewController = flutterViewController
    self.setFrame(windowFrame, display: true)

    RegisterGeneratedPlugins(registry: flutterViewController)

    SwiftFlutterPlugin.register(
        with: flutterViewController.registrar(forPlugin: "SwiftFlutterPlugin")
    )

    super.awakeFromNib()
  }
}

public class SwiftFlutterPlugin: NSObject, FlutterPlugin {

    static var instance: SwiftFlutterPlugin?
    var registrar: FlutterPluginRegistrar?

    public init(with registrar: FlutterPluginRegistrar) {
        super.init()

        self.registrar = registrar
        registrar.register(
            NativeViewFactory(messenger: registrar.messenger) as FlutterPlatformViewFactory,
            withId: "uikitview_error_macos_view")
    }

    public static func register(with registrar: FlutterPluginRegistrar) {
        SwiftFlutterPlugin.instance = SwiftFlutterPlugin(with: registrar)
    }

    public func detachFromEngine(for registrar: FlutterPluginRegistrar) {
    }
}

public class NativeViewFactory: NSObject, FlutterPlatformViewFactory
{
    init(messenger: FlutterBinaryMessenger) {
        self.messenger = messenger
        super.init()
    }

    public func createArgsCodec() -> FlutterMessageCodec & NSObjectProtocol {
        return FlutterStandardMessageCodec.sharedInstance()
    }
    
    private var messenger: FlutterBinaryMessenger

    public func create(
        withViewIdentifier viewId: Int64,
        arguments args: Any?
    )
        -> NSView
    {
        return NativeView(
            viewIdentifier: viewId,
            arguments: args,
            binaryMessenger: messenger)
    }
}

public func createLabel() -> NSTextField {
    let nativeLabel = NSTextField()
    nativeLabel.frame = CGRect(x: 0, y: 0, width: 180, height: 48.0)
    nativeLabel.stringValue = "Native text from macOS"
    nativeLabel.textColor = NSColor.red
    nativeLabel.isBezeled = false
    nativeLabel.isEditable = false
    nativeLabel.sizeToFit()
    return nativeLabel
}

class NativeView: NSView {

    init(
        viewIdentifier viewId: Int64,
        arguments args: Any?,
        binaryMessenger messenger: FlutterBinaryMessenger?
    ) {
        let frame = CGRect(x: 0, y: 0, width: 200, height: 200)
        super.init(frame: frame)
        super.wantsLayer = true
        super.layer?.backgroundColor = NSColor.blue.cgColor
        super.frame = frame
        super.addSubview(createLabel())
    }

    required init?(coder: NSCoder) {
        super.init(coder: coder)
    }
}
Logs 
[   +1 ms] 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).
[        ] 💪 Running with sound null safety 💪
[        ] An Observatory debugger and profiler on macOS is available at: http://127.0.0.1:51030/1RLhAwPR0yE=/
[ +182 ms] The Flutter DevTools debugger and profiler on macOS is available at: http://127.0.0.1:9108?uri=http://127.0.0.1:51030/1RLhAwPR0yE=/
[+11975 ms] Skipping target: gen_localizations
[        ] Skipping target: gen_dart_plugin_registrant
[        ] Skipping target: _composite
[        ] complete
[        ] Performing hot reload...
[   +6 ms] Scanned through 531 files in 3ms
[        ] Syncing files to device macOS...
[        ] Compiling dart to kernel with 0 updated files
[        ] Processing bundle.
[        ] <- recompile package:all/main.dart 2a5f529b-6f22-414a-9aec-669f46f08913
[        ] <- 2a5f529b-6f22-414a-9aec-669f46f08913
[        ] Bundle processing done.
[   +6 ms] Updating files.
[   +1 ms] DevFS: Sync finished
[        ] Syncing files to device macOS... (completed in 8ms)
[        ] Synced 0.0MB.
[   +8 ms] Reassembling application
[  +34 ms] Hot reload performed in 55ms.
[        ] Performing hot reload... (completed in 58ms)
[        ] Reloaded 0 libraries in 62ms.
[+1764 ms] Skipping target: gen_localizations
[        ] Skipping target: gen_dart_plugin_registrant
[        ] Skipping target: _composite
[        ] complete
[        ] Performing hot restart...
[   +3 ms] Scanned through 531 files in 2ms
[        ] Syncing files to device macOS...
[        ] <- reset
[        ] Compiling dart to kernel with 0 updated files
[        ] Processing bundle.
[        ] <- recompile package:all/main.dart dddac9ea-9201-45eb-99ba-7727e5adce2d
[        ] <- dddac9ea-9201-45eb-99ba-7727e5adce2d
[        ] Bundle processing done.
[  +36 ms] Updating files.
[  +14 ms] DevFS: Sync finished
[        ] Syncing files to device macOS... (completed in 52ms)
[        ] Synced 29.3MB.
[        ] <- accept
[ +196 ms] Hot restart performed in 252ms.
[        ] Performing hot restart... (completed in 254ms)
[        ] Restarted application in 256ms.
[ +317 ms] [ERROR:flutter/lib/ui/ui_dart_state.cc(198)] 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:607:7)
[        ] #1      MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:167:18)
[        ] <asynchronous suspension>
[        ] #2      PlatformViewsService.initUiKitView (package:flutter/src/services/platform_views.dart:229:5)
[        ] <asynchronous suspension>
[        ] #3      _UiKitViewState._createNewUiKitView (package:flutter/src/widgets/platform_view.dart:639:44)
[        ] <asynchronous suspension>

% flutter analyze
Analyzing all...                                                        
No issues found! (ran in 1.4s)

% flutter doctor -v
[✓] Flutter (Channel stable, 3.0.5, on macOS 12.0.1 21A559 darwin-arm, locale ja-JP)
    • Flutter version 3.0.5 at /Users/redstar16/.asdf/installs/flutter/3.0.5-stable
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision f1875d570e (6 weeks ago), 2022-07-13 11:24:16 -0700
    • Engine revision e85ea0e79c
    • Dart version 2.17.6
    • DevTools version 2.12.2

[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
    • Android SDK at /Users/redstar16/Library/Android/sdk
    • Platform android-31, build-tools 31.0.0
    • Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 13.4.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • CocoaPods version 1.11.2

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

[✓] Android Studio (version 2020.3)
    • Android Studio at /Applications/Android Studio.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 11.0.10+0-b96-7249189)

[✓] VS Code (version 1.70.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.46.0

[✓] Connected device (2 available)
    • macOS (desktop) • macos  • darwin-arm64   • macOS 12.0.1 21A559 darwin-arm
    • Chrome (web)    • chrome • web-javascript • Google Chrome 104.0.5112.101

[✓] HTTP Host Availability
    • All required HTTP hosts are available

• No issues found!

Activity

  1. akaboshinit
    changed the title [-]When I use UiKitView on macos, the id is duplicated in the internal implementation and when I restart, I get the error "PlatformException(creating_view, trying to create an already created view, view id: '0', null)" error[/-] [+]UiKitView on macos has a duplicate id in the internal implementation, causing a "PlatformException(recreating_view, trying to create an already created view, view id: '0', null)" error when restarting[/+] on Aug 26, 2022
  2. akaboshinit
    changed the title [-]UiKitView on macos has a duplicate id in the internal implementation, causing a "PlatformException(recreating_view, trying to create an already created view, view id: '0', null)" error when restarting[/-] [+]UiKitView on macos always throws a "PlatformException(recovering_view, trying to create an already created view, view id: '0', null)" error.[/+] on Aug 26, 2022
  3. danagbemava-nc
    added
    in triagePresently being triaged by the triage team
    on Aug 29, 2022
  4. danagbemava-nc
    changed the title [-]UiKitView on macos always throws a "PlatformException(recovering_view, trying to create an already created view, view id: '0', null)" error.[/-] [+][macOS] UiKitView throws a "PlatformException(recovering_view, trying to create an already created view, view id: '0', null)" after hot-restart[/+] on Aug 29, 2022

  5. danagbemava-nc commented on Aug 29, 2022

    @danagbemava-nc
    danagbemava-nc
    on Aug 29, 2022
    Member

    I can reproduce the issue with the code sample provided.

    Labeling for further investigation.

    Code sample

    main.dart

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

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: const MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({Key? key, required this.title}) : super(key: key);
  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            const Text(
              'You have pushed the button this many times:',
            ),
            Text(
              '$_counter',
              style: Theme.of(context).textTheme.headline4,
            ),
            const UIKitViewErrorMacOsWidget()
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: const Icon(Icons.add),
      ),
    );
  }
}

class UIKitViewErrorMacOsWidget extends StatelessWidget {
  const UIKitViewErrorMacOsWidget({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    if (defaultTargetPlatform == TargetPlatform.macOS) {
      return SizedBox(
        width: 200,
        height: 200,
        child: UiKitView(
          key: key,
          viewType: 'uikitview_error_macos_view',
        ),
      );
    }

    return const SizedBox();
  }
}

    MainFlutterWindow.swift

    import Cocoa
import FlutterMacOS

class MainFlutterWindow: NSWindow {
  override func awakeFromNib() {
    let flutterViewController = FlutterViewController.init()
    let windowFrame = self.frame
    self.contentViewController = flutterViewController
    self.setFrame(windowFrame, display: true)

    RegisterGeneratedPlugins(registry: flutterViewController)

    SwiftFlutterPlugin.register(
        with: flutterViewController.registrar(forPlugin: "SwiftFlutterPlugin")
    )

    super.awakeFromNib()
  }
}

public class SwiftFlutterPlugin: NSObject, FlutterPlugin {

    static var instance: SwiftFlutterPlugin?
    var registrar: FlutterPluginRegistrar?

    public init(with registrar: FlutterPluginRegistrar) {
        super.init()

        self.registrar = registrar
        registrar.register(
            NativeViewFactory(messenger: registrar.messenger) as FlutterPlatformViewFactory,
            withId: "uikitview_error_macos_view")
    }

    public static func register(with registrar: FlutterPluginRegistrar) {
        SwiftFlutterPlugin.instance = SwiftFlutterPlugin(with: registrar)
    }

    public func detachFromEngine(for registrar: FlutterPluginRegistrar) {
    }
}

public class NativeViewFactory: NSObject, FlutterPlatformViewFactory
{
    init(messenger: FlutterBinaryMessenger) {
        self.messenger = messenger
        super.init()
    }

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

    private var messenger: FlutterBinaryMessenger

    public func create(
        withViewIdentifier viewId: Int64,
        arguments args: Any?
    )
        -> NSView
    {
        return NativeView(
            viewIdentifier: viewId,
            arguments: args,
            binaryMessenger: messenger)
    }
}

public func createLabel() -> NSTextField {
    let nativeLabel = NSTextField()
    nativeLabel.frame = CGRect(x: 0, y: 0, width: 180, height: 48.0)
    nativeLabel.stringValue = "Native text from macOS"
    nativeLabel.textColor = NSColor.red
    nativeLabel.isBezeled = false
    nativeLabel.isEditable = false
    nativeLabel.sizeToFit()
    return nativeLabel
}

class NativeView: NSView {

    init(
        viewIdentifier viewId: Int64,
        arguments args: Any?,
        binaryMessenger messenger: FlutterBinaryMessenger?
    ) {
        let frame = CGRect(x: 0, y: 0, width: 200, height: 200)
        super.init(frame: frame)
        super.wantsLayer = true
        super.layer?.backgroundColor = NSColor.blue.cgColor
        super.frame = frame
        super.addSubview(createLabel())
    }

    required init?(coder: NSCoder) {
        super.init(coder: coder)
    }
}
    flutter doctor -v 
    [✓] Flutter (Channel stable, 3.0.5, on macOS 12.5 21G72 darwin-arm, locale en-GB)
    • Flutter version 3.0.5 at /Users/nexus/dev/sdks/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision f1875d570e (7 weeks ago), 2022-07-13 11:24:16 -0700
    • Engine revision e85ea0e79c
    • Dart version 2.17.6
    • DevTools version 2.12.2

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
    • Android SDK at /Users/nexus/Library/Android/sdk
    • Platform android-33, build-tools 33.0.0
    • Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.12+0-b1504.28-7817840)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 13.4.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • CocoaPods version 1.11.3

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

[✓] Android Studio (version 2021.2)
    • Android Studio at /Applications/Android Studio.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 11.0.12+0-b1504.28-7817840)

[✓] VS Code (version 1.70.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.46.0

[✓] Connected device (2 available)
    • macOS (desktop) • macos  • darwin-arm64   • macOS 12.5 21G72 darwin-arm
    • Chrome (web)    • chrome • web-javascript • Google Chrome 104.0.5112.101

[✓] HTTP Host Availability
    • All required HTTP hosts are available

• No issues found!

    [✓] Flutter (Channel master, 3.1.0-0.0.pre.2552, on macOS 12.5 21G72 darwin-arm, locale en-GB)
    • Flutter version 3.1.0-0.0.pre.2552 on channel master at /Users/nexus/dev/sdks/flutters
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision f66a097919 (7 hours ago), 2022-08-28 20:20:36 -0400
    • Engine revision 4e36ebc1f3
    • Dart version 2.19.0 (build 2.19.0-146.0.dev)
    • DevTools version 2.16.0

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
    • Android SDK at /Users/nexus/Library/Android/sdk
    • Platform android-33, build-tools 33.0.0
    • Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.12+0-b1504.28-7817840)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 13.4.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 13F100
    • CocoaPods version 1.11.3

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

[✓] Android Studio (version 2021.2)
    • Android Studio at /Applications/Android Studio.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 11.0.12+0-b1504.28-7817840)

[✓] VS Code (version 1.70.2)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.46.0

[✓] Connected device (2 available)
    • macOS (desktop) • macos  • darwin-arm64   • macOS 12.5 21G72 darwin-arm
    • Chrome (web)    • chrome • web-javascript • Google Chrome 104.0.5112.101

[✓] HTTP Host Availability
    • All required HTTP hosts are available

• No issues found!

    mac.log

  6. danagbemava-nc
    added
    c: crashStack traces logged to the console
    engineflutter/engine related. See also e: labels.
    platform-macosBuilding on or for macOS specifically
    a: platform-viewsEmbedding Android/iOS views in Flutter apps
    has reproducible stepsThe issue has been confirmed reproducible and is ready to work on
    found in release: 3.0Found to occur in 3.0
    found in release: 3.1Found to occur in 3.1
    and removed
    in triagePresently being triaged by the triage team
    on Aug 29, 2022

  7. chinmaygarde commented on Sep 6, 2022

    @chinmaygarde
    chinmaygarde
    on Sep 6, 2022
    Contributor

    cc @jmagman

  8. chinmaygarde
    added
    P2Important issues not at the top of the work list
    on Sep 6, 2022

  9. 31 remaining items

  10. PaulAllanSturm commented on Feb 16, 2025

    @PaulAllanSturm
    PaulAllanSturm
    on Feb 16, 2025
    Contributor

    PR submitted: #163439

  11. PaulAllanSturm commented on Feb 17, 2025

    @PaulAllanSturm
    PaulAllanSturm
    on Feb 17, 2025
    Contributor

    Some of the comments here mention an error with "webview_flutter_wkwebview.AuthenticationChallengeResponse" in the message. That is possibly a separate issue. This issue and my PR address only the "recreating_view" error message.

    Separately, note that this is a macos-only problem. The iOS PlatformView implementation does not share this code, and Hot Restart works fine with Platform Views on iOS.

  12. yanweimin7 commented on Feb 17, 2025

    @yanweimin7
    yanweimin7
    on Feb 17, 2025

    Some of the comments here mention an error with "webview_flutter_wkwebview.AuthenticationChallengeResponse" in the message. That is possibly a separate issue. This issue and my PR address only the "recreating_view" error message.

    Separately, note that this is a macos-only problem. The iOS PlatformView implementation does not share this code, and Hot Restart works fine with Platform Views on iOS.

    ios still face this issue , it can repreduce。
    Image

  13. PaulAllanSturm commented on Feb 17, 2025

    @PaulAllanSturm
    PaulAllanSturm
    on Feb 17, 2025
    Contributor

    ios still face this issue , it can repreduce。

    The reproducing code in this issue only runs on macOS. Can you post your code that reproduces this exception on iOS? I'm not sure if it is best to write that up as a separate issue, because it would require a separate fix.

  14. yanweimin7 commented on Feb 18, 2025

    @yanweimin7
    yanweimin7
    on Feb 18, 2025

    ios still face this issue , it can repreduce。

    The reproducing code in this issue only runs on macOS. Can you post your code that reproduces this exception on iOS? I'm not sure if it is best to write that up as a separate issue, because it would require a separate fix.

    [!] Flutter (Channel stable, 3.27.3, on macOS 14.4.1 23E224 darwin-arm64, locale zh-Hans-CN)
    • Flutter version 3.27.3 on channel stable at /Users/wey/fvm/versions/3.27.3
    ! Warning: `dart` on your path resolves to /opt/homebrew/Cellar/dart/3.5.4/libexec/bin/dart, which is not inside your current Flutter SDK checkout at /Users/wey/fvm/versions/3.27.3. Consider adding /Users/wey/fvm/versions/3.27.3/bin to the front of your path.
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision c519ee916e (4 周前), 2025-01-21 10:32:23 -0800
    • Engine revision e672b006cb
    • Dart version 3.6.1
    • DevTools version 2.40.2
    • Pub download mirror https://pub.flutter-io.cn
    • Flutter download mirror https://storage.flutter-io.cn
    • 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/wey/Library/Android/sdk
    • Platform android-35, build-tools 34.0.0
    • ANDROID_HOME = /Users/wey/Library/Android/sdk
    • Java binary at: /Applications/Android Studio.app/Contents/jbr/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 17.0.11+0-17.0.11b1207.24-11852314)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 15.2)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 15C500b
    • CocoaPods version 1.16.2

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

[✓] Android Studio (version 2024.1)
    • Android Studio at /Applications/Android Studio.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 17.0.11+0-17.0.11b1207.24-11852314)

[✓] VS Code (version 1.97.1)
    • VS Code at /Applications/Visual Studio Code.app/Contents
    • Flutter extension version 3.104.0

    sample.zip

    just click the "open page" button to open webview page, then hot restart and click "open page " button again , can repreduce

    Image

  15. shinriyo commented on Feb 19, 2025

    @shinriyo
    shinriyo
    on Feb 19, 2025

    WebView simulator bug? not fix yet?
    iOS simulator too
    It happnes mapbox one also

  16. github-merge-queue
    added a commit that references this issue on Feb 19, 2025

    Hot Restart should dispose all previous Platform Views (macOS) (#163439)

    6ac63dc
  17. darshankawar
    marked PlatformException(recreating_view, trying to create an already created view, view id: '0', null) #163829 as a duplicate of this issue on Feb 21, 2025

  18. PaulAllanSturm commented on Feb 22, 2025

    @PaulAllanSturm
    PaulAllanSturm
    on Feb 22, 2025
    Contributor

    I wrote up the iOS issue separately at #163935.

  19. PaulAllanSturm commented on Mar 5, 2025

    @PaulAllanSturm
    PaulAllanSturm
    on Mar 5, 2025
    Contributor

    Should this issue be closed now that #163439 has been merged to main?

  20. danagbemava-nc commented on Mar 7, 2025

    @danagbemava-nc
    danagbemava-nc
    on Mar 7, 2025
    Member

    Closing this as fixed since the PR has been merged.

  21. danagbemava-nc
    closed this as completedon Mar 7, 2025
  22. danagbemava-nc
    added
    r: fixedIssue is closed as already fixed in a newer version
    on Mar 7, 2025

  23. github-actions commented on Mar 21, 2025

    @github-actions
    github-actionsbot
    on Mar 21, 2025 – with GitHub Actions

    This thread has been automatically locked since there has not been any recent activity after it was closed. If you are still experiencing a similar issue, please open a new bug, including the output of flutter doctor -v and a minimal reproduction of the issue.

  24. github-actions
    locked as resolved and limited conversation to collaborators on Mar 21, 2025
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    P2Important issues not at the top of the work lista: platform-viewsEmbedding Android/iOS views in Flutter appsc: crashStack traces logged to the consoleengineflutter/engine related. See also e: labels.found in release: 3.0Found to occur in 3.0found in release: 3.1Found to occur in 3.1has reproducible stepsThe issue has been confirmed reproducible and is ready to work onplatform-macosBuilding on or for macOS specificallyr: fixedIssue is closed as already fixed in a newer versionteam-engineOwned by Engine teamtriaged-engineTriaged by Engine team

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