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auto-submit merged 25 commits into from
Jun 18, 2025
Merged

Add example for CupertinoExpansionTile transition modes #170335

auto-submit merged 25 commits into from
Jun 18, 2025

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@thakaredipali thakaredipali commented Jun 10, 2025 •
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This PR adds a combined example for the CupertinoExpansionTile widget, demonstrating its usage with both available transition modes: fade and scroll.

A demo app showing two CupertinoExpansionTile widgets:

  • One using the default fade transition mode

  • One using the scroll transition mode

A corresponding widget test verifying expand/collapse behavior for both tiles

Issue

Closes: #167317

Tests

  • Added widget tests to validate the expand and collapse behavior for both transition modes

Pre-launch Checklist

If you need help, consider asking for advice on the #hackers-new channel on Discord.

@github-actions github-actions bot added framework flutter/packages/flutter repository. See also f: labels. f: scrolling Viewports, list views, slivers, etc. f: cupertino flutter/packages/flutter/cupertino repository d: api docs Issues with https://api.flutter.dev/ d: examples Sample code and demos labels Jun 10, 2025
@thakaredipali thakaredipali force-pushed the feature/cupertino_expansion_tile_example branch from 5b39d17 to 9de541a Compare June 10, 2025 10:13
@thakaredipali thakaredipali mentioned this pull request Jun 10, 2025
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@victorsanni victorsanni self-requested a review June 10, 2025 14:59
@github-actions github-actions bot removed the f: scrolling Viewports, list views, slivers, etc. label Jun 11, 2025
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Looks like a solid example, thanks for adding it!

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Roll Flutter from 8303a96a0a99 to 85a9b4f38906 (93 revisions) (#9457)
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Roll Flutter from 8303a96a0a99 to 85a9b4f38906 (93 revisions)

flutter/flutter@8303a96...85a9b4f

2025-06-19 [email protected] Roll Skia from af242598f14d to 794936b23812 (2 revisions) (flutter/flutter#170875)
2025-06-19 [email protected] Drop support for 21/22 Lollipop (flutter/flutter#170748)
2025-06-19 [email protected] Roll Dart SDK from 6020126c10e8 to bce9abe03175 (1 revision) (flutter/flutter#170872)
2025-06-19 [email protected] Roll Skia from df97f7f407db to af242598f14d (4 revisions) (flutter/flutter#170867)
2025-06-19 [email protected] Roll Skia from 1d8f7ebd23cc to df97f7f407db (5 revisions) (flutter/flutter#170864)
2025-06-19 [email protected] Roll Dart SDK from 4ab716b09e9d to 6020126c10e8 (1 revision) (flutter/flutter#170862)
2025-06-19 [email protected] Roll Skia from 291d41414fa7 to 1d8f7ebd23cc (2 revisions) (flutter/flutter#170857)
2025-06-19 [email protected] Roll Dart SDK from b32559bca3cc to 4ab716b09e9d (9 revisions) (flutter/flutter#170855)
2025-06-19 [email protected] remove --start-paused flag by default and set useDwdsWebSocketConnect… (flutter/flutter#170612)
2025-06-18 [email protected] Engine builders no longer require `is_fusion` (flutter/flutter#170849)
2025-06-18 [email protected] Roll Skia from 5f110d5f48a3 to 291d41414fa7 (2 revisions) (flutter/flutter#170836)
2025-06-18 [email protected] Use a shared vertex buffer for rendering layers. (flutter/flutter#170717)
2025-06-18 [email protected] fixes deeplinking in uiscenedelegate migrated projects (flutter/flutter#170452)
2025-06-18 [email protected] [Impeller] fix array uniforms on GLES backend. (flutter/flutter#170710)
2025-06-18 [email protected] [Impeller] Update README to add section about custom embedders. (flutter/flutter#170077)
2025-06-18 [email protected] Escape the forbidden strings in the regex used to check test command output (flutter/flutter#170702)
2025-06-18 [email protected] License cpp jun16 (flutter/flutter#170716)
2025-06-18 [email protected] Work around newer compilers requiring the satisfaction of three-way comparison of EncodableValue. (flutter/flutter#170822)
2025-06-18 [email protected] Update didUnmountRenderObject text description (flutter/flutter#169628)
2025-06-18 [email protected] Roll Skia from 297dbc32a6c7 to 5f110d5f48a3 (2 revisions) (flutter/flutter#170821)
2025-06-18 [email protected] Add an initial "Using feature flags" doc for the team. (flutter/flutter#170767)
2025-06-18 [email protected] Feat: Add mouse cursor for CupertinoDialogAction (flutter/flutter#169051)
2025-06-18 [email protected] Update `Engine-artifacts.md` to reflect flutter/cocoon/4785 (flutter/flutter#170751)
2025-06-18 [email protected] `CupertinoPicker` new onChanged behaviour (flutter/flutter#170202)
2025-06-18 [email protected] Rename `entryPointBaseUrl` to `entrypointBaseUrl` (flutter/flutter#170166)
2025-06-18 [email protected] Roll Skia from 1cb13a21b547 to 297dbc32a6c7 (4 revisions) (flutter/flutter#170809)
2025-06-18 [email protected] Roll Packages from 25d4fa4 to 715a0a5 (2 revisions) (flutter/flutter#170808)
2025-06-18 [email protected] Roll Skia from 0a106c038cd0 to 1cb13a21b547 (1 revision) (flutter/flutter#170801)
2025-06-18 [email protected] Add `--profile-microtasks` switch (flutter/flutter#170690)
2025-06-18 [email protected] Roll Skia from ff7fffa5dac5 to 0a106c038cd0 (3 revisions) (flutter/flutter#170795)
2025-06-18 [email protected] Add example for CupertinoExpansionTile transition modes (flutter/flutter#170335)
2025-06-18 [email protected] feat: Add radius to DividerThemeData. (flutter/flutter#169739)
2025-06-18 [email protected] Roll Skia from 75af9450b121 to ff7fffa5dac5 (3 revisions) (flutter/flutter#170772)
2025-06-17 98614782+auto-submit[bot]@users.noreply.github.com Reverts "add run_gradle_lock_files_check.dart for new PR's that modify gradle files (#169245)" (flutter/flutter#170770)
2025-06-17 [email protected] Started bridging the scene delegate to the lifecycle delegate for shortcuts (flutter/flutter#170180)
2025-06-17 [email protected] [ui] npot display_list allocation. (flutter/flutter#170447)
2025-06-17 [email protected] Prefer .of over .from (flutter/flutter#170750)
2025-06-17 [email protected] Fix RawGestureDetector semantics (flutter/flutter#170549)
2025-06-17 [email protected] Use correct type for filterIdentifier (flutter/flutter#170343)
2025-06-17 [email protected] Remove and inline `license_header.txt` (flutter/flutter#170475)
2025-06-17 [email protected] add run_gradle_lock_files_check.dart for new PR's that modify gradle files (flutter/flutter#169245)
2025-06-17 [email protected] Roll Dart SDK from 4fad61257b29 to b32559bca3cc (3 revisions) (flutter/flutter#170746)
2025-06-17 [email protected] [release] Sync stable changelog to master (flutter/flutter#170691)
2025-06-17 [email protected] Roll Packages from 03a6abb to 25d4fa4 (5 revisions) (flutter/flutter#170743)
2025-06-17 [email protected] [ Widget Preview ] Remove support for synthetic package:flutter_gen (flutter/flutter#170602)
2025-06-17 [email protected] Roll Skia from 8879db3b3319 to 75af9450b121 (4 revisions) (flutter/flutter#170739)
...
Ortes pushed a commit to Ortes/packages that referenced this pull request Jun 25, 2025
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Roll Flutter from 8303a96a0a99 to 85a9b4f38906 (93 revisions) (flutte…
6f669b7 
…r#9457)

Roll Flutter from 8303a96a0a99 to 85a9b4f38906 (93 revisions)

flutter/flutter@8303a96...85a9b4f

2025-06-19 [email protected] Roll Skia from af242598f14d to 794936b23812 (2 revisions) (flutter/flutter#170875)
2025-06-19 [email protected] Drop support for 21/22 Lollipop (flutter/flutter#170748)
2025-06-19 [email protected] Roll Dart SDK from 6020126c10e8 to bce9abe03175 (1 revision) (flutter/flutter#170872)
2025-06-19 [email protected] Roll Skia from df97f7f407db to af242598f14d (4 revisions) (flutter/flutter#170867)
2025-06-19 [email protected] Roll Skia from 1d8f7ebd23cc to df97f7f407db (5 revisions) (flutter/flutter#170864)
2025-06-19 [email protected] Roll Dart SDK from 4ab716b09e9d to 6020126c10e8 (1 revision) (flutter/flutter#170862)
2025-06-19 [email protected] Roll Skia from 291d41414fa7 to 1d8f7ebd23cc (2 revisions) (flutter/flutter#170857)
2025-06-19 [email protected] Roll Dart SDK from b32559bca3cc to 4ab716b09e9d (9 revisions) (flutter/flutter#170855)
2025-06-19 [email protected] remove --start-paused flag by default and set useDwdsWebSocketConnect… (flutter/flutter#170612)
2025-06-18 [email protected] Engine builders no longer require `is_fusion` (flutter/flutter#170849)
2025-06-18 [email protected] Roll Skia from 5f110d5f48a3 to 291d41414fa7 (2 revisions) (flutter/flutter#170836)
2025-06-18 [email protected] Use a shared vertex buffer for rendering layers. (flutter/flutter#170717)
2025-06-18 [email protected] fixes deeplinking in uiscenedelegate migrated projects (flutter/flutter#170452)
2025-06-18 [email protected] [Impeller] fix array uniforms on GLES backend. (flutter/flutter#170710)
2025-06-18 [email protected] [Impeller] Update README to add section about custom embedders. (flutter/flutter#170077)
2025-06-18 [email protected] Escape the forbidden strings in the regex used to check test command output (flutter/flutter#170702)
2025-06-18 [email protected] License cpp jun16 (flutter/flutter#170716)
2025-06-18 [email protected] Work around newer compilers requiring the satisfaction of three-way comparison of EncodableValue. (flutter/flutter#170822)
2025-06-18 [email protected] Update didUnmountRenderObject text description (flutter/flutter#169628)
2025-06-18 [email protected] Roll Skia from 297dbc32a6c7 to 5f110d5f48a3 (2 revisions) (flutter/flutter#170821)
2025-06-18 [email protected] Add an initial "Using feature flags" doc for the team. (flutter/flutter#170767)
2025-06-18 [email protected] Feat: Add mouse cursor for CupertinoDialogAction (flutter/flutter#169051)
2025-06-18 [email protected] Update `Engine-artifacts.md` to reflect flutter/cocoon/4785 (flutter/flutter#170751)
2025-06-18 [email protected] `CupertinoPicker` new onChanged behaviour (flutter/flutter#170202)
2025-06-18 [email protected] Rename `entryPointBaseUrl` to `entrypointBaseUrl` (flutter/flutter#170166)
2025-06-18 [email protected] Roll Skia from 1cb13a21b547 to 297dbc32a6c7 (4 revisions) (flutter/flutter#170809)
2025-06-18 [email protected] Roll Packages from 25d4fa4 to 715a0a5 (2 revisions) (flutter/flutter#170808)
2025-06-18 [email protected] Roll Skia from 0a106c038cd0 to 1cb13a21b547 (1 revision) (flutter/flutter#170801)
2025-06-18 [email protected] Add `--profile-microtasks` switch (flutter/flutter#170690)
2025-06-18 [email protected] Roll Skia from ff7fffa5dac5 to 0a106c038cd0 (3 revisions) (flutter/flutter#170795)
2025-06-18 [email protected] Add example for CupertinoExpansionTile transition modes (flutter/flutter#170335)
2025-06-18 [email protected] feat: Add radius to DividerThemeData. (flutter/flutter#169739)
2025-06-18 [email protected] Roll Skia from 75af9450b121 to ff7fffa5dac5 (3 revisions) (flutter/flutter#170772)
2025-06-17 98614782+auto-submit[bot]@users.noreply.github.com Reverts "add run_gradle_lock_files_check.dart for new PR's that modify gradle files (#169245)" (flutter/flutter#170770)
2025-06-17 [email protected] Started bridging the scene delegate to the lifecycle delegate for shortcuts (flutter/flutter#170180)
2025-06-17 [email protected] [ui] npot display_list allocation. (flutter/flutter#170447)
2025-06-17 [email protected] Prefer .of over .from (flutter/flutter#170750)
2025-06-17 [email protected] Fix RawGestureDetector semantics (flutter/flutter#170549)
2025-06-17 [email protected] Use correct type for filterIdentifier (flutter/flutter#170343)
2025-06-17 [email protected] Remove and inline `license_header.txt` (flutter/flutter#170475)
2025-06-17 [email protected] add run_gradle_lock_files_check.dart for new PR's that modify gradle files (flutter/flutter#169245)
2025-06-17 [email protected] Roll Dart SDK from 4fad61257b29 to b32559bca3cc (3 revisions) (flutter/flutter#170746)
2025-06-17 [email protected] [release] Sync stable changelog to master (flutter/flutter#170691)
2025-06-17 [email protected] Roll Packages from 03a6abb to 25d4fa4 (5 revisions) (flutter/flutter#170743)
2025-06-17 [email protected] [ Widget Preview ] Remove support for synthetic package:flutter_gen (flutter/flutter#170602)
2025-06-17 [email protected] Roll Skia from 8879db3b3319 to 75af9450b121 (4 revisions) (flutter/flutter#170739)
...
mboetger pushed a commit to mboetger/flutter that referenced this pull request Jul 21, 2025
@thakaredipali @mboetger
Add example for CupertinoExpansionTile transition modes (flutter#170335)
15d88fe 
This PR adds a combined example for the CupertinoExpansionTile widget,
demonstrating its usage with both available transition modes: fade and
scroll.

**A demo app showing two CupertinoExpansionTile widgets:**

- One using the default fade transition mode

- One using the scroll transition mode

A corresponding widget test verifying expand/collapse behavior for both
tiles

### Issue
Closes: flutter#167317

## Tests

- Added widget tests to validate the expand and collapse behavior for
both transition modes




## Pre-launch Checklist

- [x] I read the [Contributor
Guide](https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#overview)
and followed the process outlined there for submitting PRs.
- [x] I read the [Tree
Hygiene](https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md)
wiki page, which explains my responsibilities.
- [x] I read and followed the [Flutter Style
Guide](https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md),
including [Features we expect every widget to
implement](https://github.com/flutter/flutter/blob/main/docs/contributing/Style-guide-for-Flutter-repo.md#features-we-expect-every-widget-to-implement).
- [x] I signed the [CLA](https://cla.developers.google.com/).
- [x] I listed at least one issue that this PR fixes in the description
above.
- [x] I updated/added relevant documentation (doc comments with ///).
- [x] I added new tests to check the change I am making, or this PR is
[test-exempt](https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#tests).
- [x] I followed the [breaking change
policy](https://github.com/flutter/flutter/blob/main/docs/contributing/Tree-hygiene.md#handling-breaking-changes)
and added [Data Driven
Fixes](https://github.com/flutter/flutter/blob/main/docs/contributing/Data-driven-Fixes.md)
where supported.
- [x] All existing and new tests are passing.

If you need help, consider asking for advice on the #hackers-new channel
on
[Discord](https://github.com/flutter/flutter/blob/main/docs/contributing/Chat.md).
vashworth pushed a commit to vashworth/packages that referenced this pull request Jul 30, 2025
@engine-flutter-autoroll @vashworth
Roll Flutter from 8303a96a0a99 to 85a9b4f38906 (93 revisions) (flutte…
96611fa 
…r#9457)

Roll Flutter from 8303a96a0a99 to 85a9b4f38906 (93 revisions)

flutter/flutter@8303a96...85a9b4f

2025-06-19 [email protected] Roll Skia from af242598f14d to 794936b23812 (2 revisions) (flutter/flutter#170875)
2025-06-19 [email protected] Drop support for 21/22 Lollipop (flutter/flutter#170748)
2025-06-19 [email protected] Roll Dart SDK from 6020126c10e8 to bce9abe03175 (1 revision) (flutter/flutter#170872)
2025-06-19 [email protected] Roll Skia from df97f7f407db to af242598f14d (4 revisions) (flutter/flutter#170867)
2025-06-19 [email protected] Roll Skia from 1d8f7ebd23cc to df97f7f407db (5 revisions) (flutter/flutter#170864)
2025-06-19 [email protected] Roll Dart SDK from 4ab716b09e9d to 6020126c10e8 (1 revision) (flutter/flutter#170862)
2025-06-19 [email protected] Roll Skia from 291d41414fa7 to 1d8f7ebd23cc (2 revisions) (flutter/flutter#170857)
2025-06-19 [email protected] Roll Dart SDK from b32559bca3cc to 4ab716b09e9d (9 revisions) (flutter/flutter#170855)
2025-06-19 [email protected] remove --start-paused flag by default and set useDwdsWebSocketConnect… (flutter/flutter#170612)
2025-06-18 [email protected] Engine builders no longer require `is_fusion` (flutter/flutter#170849)
2025-06-18 [email protected] Roll Skia from 5f110d5f48a3 to 291d41414fa7 (2 revisions) (flutter/flutter#170836)
2025-06-18 [email protected] Use a shared vertex buffer for rendering layers. (flutter/flutter#170717)
2025-06-18 [email protected] fixes deeplinking in uiscenedelegate migrated projects (flutter/flutter#170452)
2025-06-18 [email protected] [Impeller] fix array uniforms on GLES backend. (flutter/flutter#170710)
2025-06-18 [email protected] [Impeller] Update README to add section about custom embedders. (flutter/flutter#170077)
2025-06-18 [email protected] Escape the forbidden strings in the regex used to check test command output (flutter/flutter#170702)
2025-06-18 [email protected] License cpp jun16 (flutter/flutter#170716)
2025-06-18 [email protected] Work around newer compilers requiring the satisfaction of three-way comparison of EncodableValue. (flutter/flutter#170822)
2025-06-18 [email protected] Update didUnmountRenderObject text description (flutter/flutter#169628)
2025-06-18 [email protected] Roll Skia from 297dbc32a6c7 to 5f110d5f48a3 (2 revisions) (flutter/flutter#170821)
2025-06-18 [email protected] Add an initial "Using feature flags" doc for the team. (flutter/flutter#170767)
2025-06-18 [email protected] Feat: Add mouse cursor for CupertinoDialogAction (flutter/flutter#169051)
2025-06-18 [email protected] Update `Engine-artifacts.md` to reflect flutter/cocoon/4785 (flutter/flutter#170751)
2025-06-18 [email protected] `CupertinoPicker` new onChanged behaviour (flutter/flutter#170202)
2025-06-18 [email protected] Rename `entryPointBaseUrl` to `entrypointBaseUrl` (flutter/flutter#170166)
2025-06-18 [email protected] Roll Skia from 1cb13a21b547 to 297dbc32a6c7 (4 revisions) (flutter/flutter#170809)
2025-06-18 [email protected] Roll Packages from 25d4fa4 to 715a0a5 (2 revisions) (flutter/flutter#170808)
2025-06-18 [email protected] Roll Skia from 0a106c038cd0 to 1cb13a21b547 (1 revision) (flutter/flutter#170801)
2025-06-18 [email protected] Add `--profile-microtasks` switch (flutter/flutter#170690)
2025-06-18 [email protected] Roll Skia from ff7fffa5dac5 to 0a106c038cd0 (3 revisions) (flutter/flutter#170795)
2025-06-18 [email protected] Add example for CupertinoExpansionTile transition modes (flutter/flutter#170335)
2025-06-18 [email protected] feat: Add radius to DividerThemeData. (flutter/flutter#169739)
2025-06-18 [email protected] Roll Skia from 75af9450b121 to ff7fffa5dac5 (3 revisions) (flutter/flutter#170772)
2025-06-17 98614782+auto-submit[bot]@users.noreply.github.com Reverts "add run_gradle_lock_files_check.dart for new PR's that modify gradle files (#169245)" (flutter/flutter#170770)
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engine-flutter-autoroll added a commit to engine-flutter-autoroll/packages that referenced this pull request Aug 14, 2025
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74ff8767a Add example for CupertinoExpansionTile transition modes (fl…
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@PrzemyslawPluszowy
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PrzemyslawPluszowy commented Aug 18, 2025

I would like to propose a small functionality extension to increase the widget's flexibility.

const MyCupertinoExpansionTile({
    required this. Title,
    required this. Child,
    super.key,
    this.controller,
    this.transitionMode = ExpansionTileTransitionMode.fade,
    this.icon = CupertinoIcons.right_chevron,
    this.iconColor = CupertinoColors.activeBlue,
  });

  /// The icon to display in the  of the [MyCupertinoExpansionTile].
  final IconData icon;

  /// The color of the icon.
  final Color iconColor;

@victorsanni
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victorsanni commented Aug 18, 2025

I would like to propose a small functionality extension to increase the widget's flexibility.

Hi, can you file an issue explaining the use case?

IMO a builder for the trailing widget in the underlying CupertinoListTile might provide better customizability. The builder can be of type ExpansibleComponentBuilder to take in the animation as well. We want to avoid a huge API surface like in ExpansionTile.

@PrzemyslawPluszowy
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PrzemyslawPluszowy commented Aug 19, 2025

Just a suggestion (not a bug).
When changing the background color of CupertinoExpansion (e.g. wrapping it in a Container), the default icon can become invisible on certain colors like blue.
It might be useful to allow customizing the icon color.

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@victorsanni victorsanni victorsanni approved these changes

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d: api docs Issues with https://api.flutter.dev/ d: examples Sample code and demos f: cupertino flutter/packages/flutter/cupertino repository framework flutter/packages/flutter repository. See also f: labels.

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Add example app for CupertinoExpansionTile

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@thakaredipali @PrzemyslawPluszowy @victorsanni @justinmc