fold_kit 1.1.1

iPhone Duo and foldable support for Flutter: fold position, posture, hinge angle, two-pane layouts and Duo-style vertical bars on iOS and Android foldables.

1.1.1

• Package description and topics now name iPhone Duo, foldables, dual screens and the hinge, so pub.dev search finds fold_kit for those words. No code changes.

1.1.0

• FoldScaffold reads your native bars: pass a NavigationBar, BottomNavigationBar or CupertinoTabBar as bottomNavigationBar and its tabs, selection and tap callback go into the vertical bar on iPhone Duo — no destinations needed. Renaming Scaffold is the whole migration.
• Vertical bar looks native on iPhone Duo: it sits in the status strip on the right, below the clock (no extra band, the page keeps its width), with icon-only buttons in capsules: back, actions, tabs. FoldBarTheme.backgroundColor now colors the capsules; labelStyle is deprecated.
• Glass look: FoldBarTheme(glass: true) makes the capsules blurred, see-through glass, and on phones turns the tabs built from destinations into a floating glass tab bar.
• Drop-in for big apps: FoldScaffold also takes bottomSheet, floatingActionButtonLocation, persistentFooterButtons, extendBody and extendBodyBehindAppBar, so renaming Scaffold compiles.
• Right-to-left languages: the iPhone Duo bar stays in the status strip on the right.
• FoldDevice.innerPadding: FoldPreview shows the iPhone Duo status strip on the open display too.
• FoldTwoPane options: splitWhen (e.g. split only while half open), splitWithoutFold (tablets stay one page) and hinge (a widget in the fold gap).
• FoldLayoutBuilder: the fold mapped into any widget (LocalFold.start / end / rect), for layouts like "keep the canvas above a tabletop fold".
• FoldAngleController: live hinge angle for protractor-style features, with hold() that takes the value from just before the tap.
• FoldBarTheme.topInset overrides where the iPhone Duo bar starts below the clock.
• Android: a hinge angle under 15° counts as closed (outer display); bars stay at the bottom there.
• Catalog: Pixel 9 Pro Fold (measured on the emulator).
• Vertical bar is your choice: FoldBarPlacement.auto now also goes vertical on any window 840+ wide (open Android foldables, tablets in portrait); verticalWhen sets your own rule, verticalBarBuilder draws the whole bar from FoldBarContent, FoldBarTheme.width sizes it.
• Package rule: every public member is documented (public_member_api_docs on).
• Hinge angle listener: FoldListener(onAngleChanged: …) and FoldKit.angles stream. FoldListener.onChanged is now optional.

1.0.0

First stable release: one foldable and large-screen API for every device.

• FoldPreview: run any screen as iPhone Duo, Galaxy Z Fold or iPad (closed, half open, flat, portrait) on any screen or in widget tests, with the fold painted on top and an optional toolbar. Build foldable layouts without a foldable.
• Device catalog (FoldDevices): measured sizes and folds of current foldables and tablets; FoldDevices.refresh() (opt-in) pulls the latest list from monsware.com/foldkit/models.
• dart run fold_kit:audit: lists code and settings that break on foldables, tablets and Split View (screen-size math, orientation locks, inactive pauses, UIRequiresFullScreen, screenOrientation…). --fatal for CI.
• FoldBuilder, FoldListener, FoldKit.changes: one FoldState with posture, hinge angle, device (model id + catalog name) and isOpen / isClosed / isFoldable — render your own foldable layout when it is open, your normal page otherwise.
• Easy migration: FoldScaffold keeps your own appBar and bottomNavigationBar on phones, adds no app bar when you have none, takes Widget icons (badges work) and reuses your BottomNavigationBarItems via FoldDestination.fromItem; FoldBarTheme matches your colors.
• FoldKitScope follows rotation and window resizing (MediaQuery used to keep the first size on Android, web and desktop).
• fold_kit:audit flags UIRequiresFullScreen only when it is true.
• FoldScaffold: screen readers can press the vertical bar buttons; your own AppBar's title, leading and actions show in the vertical layout too; the bar scrolls instead of overflowing on short windows; drawer and endDrawer are passed through, so renaming Scaffold works for apps with a drawer.
• FoldDevice equality by id: FoldPreview keeps its selection after FoldDevices.refresh().
• iOS hinge angle is reported in degrees (UIKit gives radians); fully open is 180.
• Everything from 0.1.0 below.

0.1.0 (not published, part of 1.0.0)

• iPhone Duo: FoldKitScope reads the fold (reserved division region) and the hinge status on iOS 27.1 and puts the fold into MediaQuery.displayFeatures, like Flutter does on Android. FoldInfo.posture now reports closed and flat too. Builds with Xcode 27.0 as well (no-op there).
• FoldScaffold: app bar and tabs move into one vertical bar on the right where iOS does that for native apps (Duo outer display, inner display in landscape); normal app bar + navigation bar elsewhere. Overflow menu, prominent actions, priorities; the body keeps its state.
• FoldTwoPane: two panes split exactly at the fold (book or tabletop), by ratio on wide windows without a fold, one pane on phones.
• FoldAvoid: keeps hand-positioned buttons off the hinge.
• Hinge angle: FoldKitScope.angleOf(context) on iPhone Duo and Android foldables (API 30+ hinge sensor).
• New logo.

0.0.1

• FoldInfo.of(context): fold rect, axis, posture (none / closed / halfOpen / flat) and window size class.
• WindowSizeClass (compact / medium / expanded, Material 3 breakpoints).
• Android foldables supported through Flutter's display features; iPhone Duo support comes in 0.1.