settings_ui 4.0.0

Breaking changes

• Migrated from package:flutter/material.dart and package:flutter/cupertino.dart to the decoupled material_ui and cupertino_ui packages (#207, thanks @SlayerOrnstein)
• Requires Flutter >=3.44.0 and Dart SDK >=3.12.0
• Your app must use MaterialApp/CupertinoApp from material_ui/cupertino_ui. In an app still on package:flutter/material.dart, SettingsList can't read your theme and falls back to default colors and light mode. Stay on ^3.0.1 until your app has migrated.
• New default look that matches iOS 26/27, macOS 26/27, Android 16/17, Windows 11, GNOME 51 and current Chrome settings (see Design refresh). Sizes, paddings and default colors changed. Colors you set in SettingsThemeData still win.
• iOS switch tiles now show the new CupertinoSettingsSwitch instead of CupertinoSwitch. Tests that find CupertinoSwitch need to look for CupertinoSettingsSwitch.
• macOS now has its own macOS System Settings style instead of the iOS style. Its switch tiles show the new MacosSettingsSwitch, not a CupertinoSwitch.
• Windows now has its own Windows 11 style instead of the iOS style. Its switch tiles show the new FluentSettingsSwitch, not a CupertinoSwitch.
• Linux now has its own GNOME style instead of the Android style. Its switch tiles show the new AdwaitaSettingsSwitch, not a Material Switch, so tests that find Switch on Linux need to look for AdwaitaSettingsSwitch.
• The default side padding of SettingsList now comes from the width the list gets, not the screen width (see Bug fixes). A list in a side panel or a narrow pane of a wide window gets less side padding than before.

Design refresh

• iOS: 26pt cards with continuous corners and 20pt side margins, 52pt rows with 17pt text, 17pt semibold section headers, and the iOS secondary grey for headers and footers. Write section titles in sentence case, like iOS 26: if you passed ALL-CAPS titles for the old iOS look, change them.
• iOS: a new switch that matches the iOS 26/27 one, drawn entirely in Flutter. It has a 63x28 track and a pill-shaped thumb, and while it is pressed or dragged the thumb becomes a Liquid Glass-style lens. It is public as CupertinoSettingsSwitch, so you can use it outside settings lists too.
• macOS: a new style that matches macOS 26/27 System Settings (#148), instead of the iOS one: 12pt cards on a white page, 36pt rows with 13pt text, 13pt semibold headers, a 640pt column and the new public MacosSettingsSwitch (36x16, or 44x20 with MacosSettingsSwitchSize.large).
• Android, Fuchsia: every tile sits on its own card, 2dp apart, with 20dp corners at the ends of a group and 4dp in between, on a surfaceContainer page. 16sp titles, tighter rows, and switches that show a check or a cross.
• Windows: a new Windows 11 Settings style (#160) instead of the iOS one: one card per tile with 4px corners and a hairline border, 70px rows, 14px titles and 12px descriptions, the Windows hover, pressed and keyboard focus states, and FluentSettingsSwitch, a public WinUI-style toggle drawn in Flutter.
• Linux: a new GNOME style that matches GNOME Settings 51 (libadwaita 1.10): boxed-list cards with 12px corners and a soft shadow, 54px rows with full-width separators, bold group titles, dimmed subtitles and values, a go-next arrow on navigation tiles, hover and keyboard focus highlights, and an AdwClamp-style 600px column. Its switch, a 46x26 GNOME switch drawn in Flutter, is public as AdwaitaSettingsSwitch, and AdwaitaPanDownIcon gives combo rows their arrow.
• Web: Chrome-style white cards with 8px corners and a light shadow, 14px titles and 13px descriptions, 20px leading icons, a chevron on navigation tiles, near-black section titles, and a 680px column on wide screens (16px side margins in narrow windows).
• macOS, Windows, Linux: Material widgets in a CustomSettingsTile (a ListTile, a Checkbox) work on the cards without a Scaffold, and text in custom tiles takes the tile's style and color.

Bug fixes

• Colors, dark mode and platform now follow the app theme in apps built on material_ui (#206)
• iOS: values are right-aligned next to the chevron again (#203, #202, thanks @mmng-a)
• iOS: simple tiles now show their value, like on Android (#201, thanks @mmng-a)
• iOS: a long title no longer hides the value. The value takes at most half the row, on one line
• Compiles on Flutter forks that add platforms, such as OpenHarmony, which get the Cupertino style (#205)
• SettingsList.brightness now overrides the brightness from the app theme, in every style. It was ignored. The Android and web styles, whose colors come from the app's ColorScheme, then use a scheme of that brightness made from its primary color, and the iOS switch follows it too
• ApplicationType.both now goes by the platform the app runs on: the CupertinoTheme on iOS and macOS, the Material Theme elsewhere. Before, it read the Material brightness unless platform: DevicePlatform.iOS was set, so a CupertinoApp that follows the system could show light colors in dark mode
• crossAxisAlignment: CrossAxisAlignment.start now puts the content at the start edge on wide screens (left in LTR, right in RTL). The default padding used to keep it centered
• The wide-screen side padding now comes from the width the list gets, not the screen width, so a SettingsList in a narrow pane of a wide window fits the pane. iOS tile descriptions also take the list's width now
• A SettingsSection with no tiles no longer crashes on iOS, macOS and Windows. Empty sections now show nothing on every platform
• SettingsTile.titleDescriptionPadding now pads the title description on iOS. titlePadding was used instead
• SettingsTile.trailingPadding and descriptionPadding now work on iOS, macOS and Windows, and titlePadding on Android and web. They were ignored there
• Android and web: disabled switches use SettingsThemeData.inactiveSwitchColor with or without a trailing widget, and a web switch next to a trailing widget no longer has a hard-coded blue active color (#188)
• iOS, Android and web: a disabled tile no longer runs onPressed or onToggle from the keyboard (Tab, then Enter or Space)
• Screen readers now read a switch tile with its title, as one item ("Wi-Fi, switch, on"), instead of just "switch, on" on iOS, Android and web. Where the row also has onPressed (iOS, macOS and Windows), the row and its switch are two items, both named by the title
• iOS: rows that do nothing (no onPressed, or disabled) no longer offer screen readers a tap action
• Screen readers read each tile as its own item in every style: an Android section with one tappable tile was read as one button holding all its tiles. Tiles with onPressed are buttons, and section titles headings
• iOS: a widget test that ends right after tapping a tile no longer fails with a pending timer

New features

• SettingsSplitView: the list and the selected page side by side on iPad, tablets, unfolded foldables, desktop and the web, and a list with pushed pages on phones. It follows each platform app: iPad Settings (320pt sidebar, blue capsule selection, two panes from 600pt on iPads), Android Settings (36.36% list pane on surface dim, two panes at 720dp wide with a 600dp smallest width, no icons in a list pane under 380dp) and Chrome (266px menu, two panes above 980px). It keeps pages, their state, pushed sub-pages and the keyboard focus when a device folds, unfolds or rotates, handles back, Android predictive back and the iOS back swipe (a PopScope in a page can veto), restores the shown page, closes a page whose tile goes away, puts the panes on each side of a hinge, and mirrors in right-to-left layouts. In one pane, back first closes a route that a list tile pushed itself (Navigator.push, a menu, a sheet), and the view stays in one pane until that route has closed. It also works in a CupertinoApp or WidgetsApp without MaterialLocalizations. Control it with SettingsSplitController, SettingsSplitLayout, initialDestinationId and onDestinationChanged. The arrow keys move through the list pane and Tab moves between the panes (#2)
• SettingsSplitView on the desktop styles: each draws its settings app's sidebar and page header. In the sidebars Up and Down stop at the first and last rows, a click focuses the row (its focus ring shows once a key is pressed), Tab reaches switch rows, and screen readers hear which row is selected.
  • macOS: the System Settings sidebar (232pt, full height, 32pt rows, an accent selection with a white label that turns grey while the app is inactive, 11pt bold section titles, no hover) and a 52pt toolbar with the page title and Liquid Glass-style back and forward buttons. Two panes from 560pt. Moving the focus with the arrow keys opens the row, like macOS sidebars.
  • Windows: the Windows 11 Settings NavigationView (a 300px pane from 1008px and a 48px icon rail with tooltips from 641px, whose menu button opens the pane over the page). The selected item has an accent pill that slides from the previous one. The page title is large, and pages opened from a page show a breadcrumb. Both stay on one line: the first crumbs collapse into "…".
  • GNOME: the GNOME Settings sidebar (a quarter of the window, 180 to 280, collapsing at 550; 43px rounded rows; its own header bar) and flat header bars with centered titles and a back button when collapsed or nested. In one pane the sidebar fills the window. Its sizes, like the GNOME page column's, grow with the body text, also with the non-linear font scaling of Android 14 and later.
• SettingsDestination and SettingsTile.navigation(destination: ...): a tile can open a page without your own Navigator.push. In a SettingsList it pushes a Cupertino or Material route with the platform's page header (iOS 26 inline title and glass back button, Android's collapsing large title, the macOS toolbar, the Windows page title with a breadcrumb, GNOME's header bar, Chrome's page title), and the SettingsList in the page takes the platform, brightness and themes of the list that opened it
• SettingsThemeData.selectedTileColor, selectedTileTextColor, selectedTileIconColor and listPaneBackground for the split view, with defaults for every style
• Debug builds print a one-time warning when SettingsList finds no material_ui or cupertino_ui theme above it

Documentation

• README rewritten for 4.0: every style, the split view, API tables, and copy-paste prompts for coding agents (Claude Code, Codex, Cursor)
• New llms.txt: a compact API reference with the platform differences and the mistakes to avoid, for coding agents. It ships in the package, and the README's prompts fetch it from GitHub
• New AGENTS.md with instructions for agents working on this repository
• To show a value without the chevron, use SettingsTile instead of SettingsTile.navigation (#204)

Maintenance

• CI now checks formatting with dart format (flutter format was removed from Flutter)
• Example app: updated Android Gradle setup, moved the iOS runner to the UIScene lifecycle required on iOS 27, and added a macOS runner
• Example app: a "Split view" demo with iPad, Android, Chrome, macOS System Settings, Windows Settings and GNOME Settings trees, a showcase screen (a fictional app's settings in every style, for screenshots), and replicas of macOS, Windows and GNOME settings pages. A screen, style and brightness can be opened directly, e.g. cd example && flutter run --route '/split-view?platform=android&theme=dark', ?screen=showcase&platform=windows on the web, or --dart-define=SCREEN=gnome-power
• Example app: added a Linux runner, the showcase in the gallery, switches that toggle in every demo, and the Material 3 demo and the Android replica follow dark mode