[documentation] Overflow parameter removed from Stack Widget

After ugprading Im getting the following error:

lib/widgets/video_player/video_player_widget.dart:255:15: Error: No named parameter with the name 'overflow'.
              overflow: Overflow.clip,
              ^^^^^^^^
../sdk/packages/flutter/lib/src/widgets/basic.dart:3273:3: Context: Found this candidate, but the arguments don't match.
  Stack({
  ^^^^^

I get an error on every Stack widget using the overflow parameter.

Steps to Reproduce

Run flutter create bug.
Use Stack widget

Expected results:
overflow parameter should be available

Actual results:
overflow attribute does not exist

Logs

[√] Flutter (Channel master, 1.22.0-10.0.pre.221, on Microsoft Windows [Version 10.0.18363.1082], locale en-DE)
    • Flutter version 1.22.0-10.0.pre.221 at D:\dev\flutter\sdk
    • Framework revision fa646339d6 (14 hours ago), 2020-09-16 17:47:04 -0700
    • Engine revision 933f811d94
    • Dart version 2.10.0 (build 2.10.0-135.0.dev)

[!] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
    • Android SDK at C:\Users\Marvin\AppData\Local\Android\sdk
    • Platform android-29, build-tools 29.0.3
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
    X Android license status unknown.
      Run `flutter doctor --android-licenses` to accept the SDK licenses.
      See https://flutter.dev/docs/get-started/install/windows#android-setup for more details.

[√] Android Studio (version 4.0)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin version 49.0.2
    • Dart plugin version 193.7547
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)

@crtl

Hi @crtl
I can reproduce the issue

overflow is also missing from master API docs https://api.flutter.dev/flutter/widgets/Stack-class.html
still present in https://api.flutter.dev/flutter/widgets/Stack-class.html.

Also missing from the source

flutter/packages/flutter/lib/src/widgets/basic.dart

Lines 3273 to 3282 in d15da04

    
             Stack({ 
        
               Key? key, 
        
               this.alignment = AlignmentDirectional.topStart, 
        
               this.textDirection, 
        
               this.fit = StackFit.loose, 
        
               this.clipBehavior = Clip.hardEdge, 
        
               List<Widget> children = const <Widget>[], 
        
             }) : assert(clipBehavior != null), 
        
                  super(key: key, children: children);

code sample

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Material App',
      theme: ThemeData.dark(),
      home: Home(),
    );
  }
}

class Home extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Material App Bar'),
      ),
      body: Center(
        child: Stack(
          overflow: Overflow.clip,
          children: [
            FlutterLogo(
              size: 500,
            ),
            Image.network(
              'https://i.imgur.com/QCNbOAo.png',
              height: 600,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        child: Icon(Icons.add),
        onPressed: () {},
      ),
    );
  }
}

flutter doctor -v

[✓] Flutter (Channel master, 1.22.0-10.0.pre.222, on Microsoft Windows [Version 10.0.19041.508], locale en-US)
    • Flutter version 1.22.0-10.0.pre.222 at C:\Code\flutter_master
    • Framework revision d15da04f4f (47 minutes ago), 2020-09-17 07:51:28 -0700
    • Engine revision 933f811d94
    • Dart version 2.10.0 (build 2.10.0-135.0.dev)


[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.2)
    • Android SDK at C:\Code\sdk
    • Platform android-30, build-tools 30.0.2
    • ANDROID_HOME = C:\Code\sdk
    • Java binary at: C:\Code\android-studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)
    • All Android licenses accepted.

[✓] Chrome - develop for the web
    • Chrome at C:\Program Files (x86)\Google\Chrome\Application\chrome.exe

[✓] Visual Studio - develop for Windows (Visual Studio Community 2019 16.7.3)
    • Visual Studio at C:\Program Files (x86)\Microsoft Visual Studio\2019\Community
    • Visual Studio Community 2019 version 16.7.30503.244
    • Windows 10 SDK version 10.0.18362.0

[✓] Android Studio (version 4.0)
    • Android Studio at C:\Code\android-studio
    • Flutter plugin version 49.0.2
    • Dart plugin version 193.7547
    • Java version OpenJDK Runtime Environment (build 1.8.0_242-release-1644-b01)

[✓] VS Code (version 1.49.0)
    • VS Code at C:\Users\Taha\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.14.1

[✓] Connected device (3 available)
    • Windows (desktop) • windows    • windows-x64    • Microsoft Windows [Version 10.0.19041.508]
    • Web Server (web)  • web-server • web-javascript • Flutter Tools
    • Chrome (web)      • chrome     • web-javascript • Google Chrome 85.0.4183.102

• No issues found!

I found it was removed intentionally 7948a78
Needs some explanation

CC: @liyuqian

This was an intended change as part of #61366, but seems to lack a migration guide.

Please see the migration guide that's originally posted in #59364

Ahhh, didn't look deep enough, thanks!

It should be marked deprecated for a while first. No one will know that it changed and a lot of libraries will stop working if this change is forced to fast. At least I havent seen it deprecated before.

From the migration guide, this wroked for me to fix the issue :

If you previously used overflow: Overflow.visible, you shall replace it with clipBehavior: Clip.none.

For ListWheelViewport widget, if you previously specified clipToSize, replace it with the corresponding clipBehavior: Clip.none for clipToSize = false and Clip.hardEdge for clipToSize = true.

Replaced Stack widget's overflow to clipBehavior

@crtl

@crtl : thanks for your suggestion! I'm adding Overflow back with deprecation in #66305

Overflow in Stack is deprecated. Use [Stack.clipBehavior] instead.

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.

Navigation Menu

Repository navigation

[documentation] Overflow parameter removed from Stack Widget #66030

Steps to Reproduce

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

	Stack({
	Key? key,
	this.alignment = AlignmentDirectional.topStart,
	this.textDirection,
	this.fit = StackFit.loose,
	this.clipBehavior = Clip.hardEdge,
	List<Widget> children = const <Widget>[],
	}) : assert(clipBehavior != null),
	super(key: key, children: children);

[documentation] Overflow parameter removed from Stack Widget #66030

Description

Steps to Reproduce

Activity

TahaTesser commented on Sep 17, 2020

pingbird commented on Sep 17, 2020

liyuqian commented on Sep 17, 2020

pingbird commented on Sep 17, 2020

crtl commented on Sep 17, 2020

loic-hamdi commented on Sep 18, 2020

liyuqian commented on Sep 22, 2020

github-actions commented on Aug 12, 2021

Metadata

Metadata

Assignees

Labels

Type

Projects

Milestone

Relationships

Development

Issue actions