[ios/catalyst] fix memory leak in DatePicker #16589

jonathanpeppers · 2023-08-07T20:38:17Z

Context: #16346

This addresses the memory leak discovered by:

src/Core/src/Platform/iOS/MauiDatePicker.cs(37,27): error MA0003: Subscribing to events with instance method 'OnValueChanged' could cause memory leaks in an NSObject subclass. Remove the subscription or convert the method to a static method.

I could reproduce a leak in MemoryTests.cs:

++[InlineData(typeof(DatePicker))]
public async Task HandlerDoesNotLeak(Type type)

Solved the problem by fixing two places:

MauiDatePicker now uses a UIDatePickerProxy type, for iOS
DatePickerHandler.MacCatalyst.cs now uses a UIDatePickerProxy type, for MacCatalyst.

Context: dotnet#16346 This addresses the memory leak discovered by: src/Core/src/Platform/iOS/MauiDatePicker.cs(37,27): error MA0003: Subscribing to events with instance method 'OnValueChanged' could cause memory leaks in an NSObject subclass. Remove the subscription or convert the method to a static method. I could reproduce a leak in `MemoryTests.cs`: ++[InlineData(typeof(DatePicker))] public async Task HandlerDoesNotLeak(Type type) Solved the problem by fixing two places: * `MauiDatePicker` now uses a `UIDatePickerProxy` type, for iOS * `DatePickerHandler.MacCatalyst.cs` now uses a `UIDatePickerProxy` type, for MacCatalyst.

jonathanpeppers · 2023-08-07T22:58:56Z

Actually, the new test found a leak on Android....

I can't seem to reproduce this locally...

This reverts commit bc6d952.

jonathanpeppers · 2023-08-08T20:24:45Z

src/Controls/tests/DeviceTests/Memory/MemoryTests.cs

+		// NOTE: skip certain controls on older Android devices
+		if (type == typeof (DatePicker) && !OperatingSystem.IsAndroidVersionAtLeast(30))
+				return;


This is working for me locally on an API 23 emulator -- so I don't think it is really leaking.

We skipped like this in another place:

maui/src/Controls/tests/DeviceTests/Elements/NavigationPage/NavigationPageTests.cs

Lines 302 to 303 in 9fcccd5

if (!OperatingSystem.IsAndroidVersionAtLeast(30))

return;

Since this would still run on the newer Android emulators, this seems fine for now. We are more interested in iOS on this PR.

* Add swipe for uitests * Bump the androidx group with 1 update (#16474) Bumps the androidx group with 1 update: [Xamarin.AndroidX.RecyclerView](https://github.com/xamarin/AndroidX). - [Commits](https://github.com/xamarin/AndroidX/commits) --- updated-dependencies: - dependency-name: Xamarin.AndroidX.RecyclerView dependency-type: direct:production update-type: version-update:semver-patch dependency-group: androidx ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> * Document Element (#16299) * Begin doc progress * Document element * More explicit interface implementations * Address PR feedback * Document interfaces + delete xml * whitespace * Prevent compile issues * Document IElementController (and mark as obsolete) * Remove Obsolete attribute from IElementController This would break the build in various places - and would go out of scope of the PR * Document IVusalElementController Apparently is only for internal use. We can't make it private so the only choice is to mark everything as for internal use only * Prevent mdoc from breaking You can't really cref a namespace * Fixed other crefs * Address Dave's feedback * Move powershell pack script into cake (#16588) * 'pwsh' is broken on net8 PowerShell/PowerShell#19679 * Remove the script * oops * Fix Graphics Font comparison method (#15985) * Fix the issue * Added more tests * Updated Impl * [WinUI] Implement PointerPressed and PointerReleased (#16213) * Implement on Windows and add unit tests * Update src/Controls/src/Core/PointerGestureRecognizer.cs Co-authored-by: Samantha Houts <samhouts@users.noreply.github.com> --------- Co-authored-by: Samantha Houts <samhouts@users.noreply.github.com> * [X] Optimize OnPlatform element syntax (#5611) * [X] Optimize OnPlatform element syntax - fixes #5583 * Auto-format source code * don't generate x:Name for removed OnPlatforms * Update src/Controls/src/SourceGen/Controls.SourceGen.csproj Co-authored-by: Jonathan Peppers <jonathan.peppers@microsoft.com> * fix string comparison --------- Co-authored-by: Jonathan Peppers <jonathan.peppers@microsoft.com> * [Housekeeping] Add 8.0 preview 7 (#16613) also adds a checkbox to make it clear if this is a regression or not * [X] Support DynResources as AppThemeBinding values (#16597) Because, you know, why not ? It could be useful - fixes #13619 * [main] Update dependencies from dotnet/xharness (#16600) * Update dependencies from https://github.com/dotnet/xharness build 20230807.2 Microsoft.DotNet.XHarness.CLI , Microsoft.DotNet.XHarness.TestRunners.Common , Microsoft.DotNet.XHarness.TestRunners.Xunit From Version 8.0.0-prerelease.23403.1 -> To Version 8.0.0-prerelease.23407.2 * Run device tests on 16.4 * Force to 16.4 * Skip test that fails on iOS --------- Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com> Co-authored-by: Rui Marinho <me@ruimarinho.net> * Adds prompts when creating a new page. (#16331) * Adds prompts when creating a new page. * Updates description as per suggested PR comments * [ios] fix memory leak in GraphicsView (#16605) Context: #16346 This addresses the memory leak discovered by: src/Core/src/Platform/iOS/PlatformTouchGraphicsView.cs(12,29): error MA0002: Member '_hoverGesture' could cause memory leaks in an NSObject subclass. Remove the member, store the value as a WeakReference, or add the [UnconditionalSuppressMessage("Memory", "MA0002")] attribute with a justification as to why the member will not leak. I could reproduce a leak in `MemoryTests.cs`: ++[InlineData(typeof(GraphicsView))] public async Task HandlerDoesNotLeak(Type type) Solved the problem by fixing two places: * `PlatformTouchGraphicsView` now stores the `IGraphicsView` as a `WeakReference`. * A `UIHoverGestureRecognizerProxy` is used for callbacks to the `UIHoverGestureRecognizer`. * [create-pull-request] automated change (#16592) Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> * Setting binding on Label doesn't set text to incoming binding (#16410) * Test demonstrating binding issue * [C] SetBinding overrides SetValue, but only when the value is set * - reenable tests --------- Co-authored-by: Stephane Delcroix (HE/HIM) (from Dev Box) <stdelc@microsoft.com> * Added DeviceTest to validate CharacterSpacing on iOS Button (#16603) * Use runtime check for setting WKWebView inspectable flag (#16631) * Use runtime check * Remove private * Add back line * Line endings? * Use System.OperatingSystem * Update src/BlazorWebView/src/Maui/iOS/BlazorWebViewHandler.iOS.cs Co-authored-by: Rolf Bjarne Kvinge <rolf@xamarin.com> --------- Co-authored-by: Rolf Bjarne Kvinge <rolf@xamarin.com> * [Housekeeping] Fix broken bug template (#16643) * [Housekeeping] Fix broken bug template checkbox <> checkboxes * Update bug-report.yml * Update bug-report.yml * Implement Additional PointerGestureRecognizer Platform Arguments (#16426) * Pointer Platform Event Args * remove extension and use property instead * make ctor internal * nullable consistency, spelling, and private setter * Public API changes and remove nullable windows routedargs * uitests part 1 * only run ui tests on windows and mac * move device conditional to test * Change the tests to Pointer Tests for more reusability * Add documentation * Add extension method for ignoring platforms * Update the documentation * Change platform specific docs * [C] fix Specificity for VSM (#16404) * [C] fix Specificity for VSM - fixes #11204 * remove skipped test * Prevent Android timer from adding multiple callbacks; (#16078) Fixes #10257 * [Housekeeping] Remove checkboxes from bug template (#16650) I did not realize that they would be editable tasks on the issue. Replaced with a dropdown. Also reordered the versions to be the most likely default options to speed up the reporting process. * [Android] Fix SwipeView not swiping using Label as direct content (#14824) * Fix Android SwipeView not swiping using Label as Content * Refactoring code * Added sample to validate 6154 --------- Co-authored-by: Javier Suárez <6755973+jsuarezruiz@users.noreply.github.com> * Locate MAUI View for PlatformView (#16463) * Locate xplat view from platformview * - dispatcher * - fix layout comparison on xunit * - PR review comments * - tizen fix * Bump the aspnetcore group with 7 updates (#16634) Bumps the aspnetcore group with 7 updates: | Package | Update | | --- | --- | | [Microsoft.AspNetCore.Authorization](https://github.com/dotnet/aspnetcore) | 7.0.9 to 7.0.10 | | [Microsoft.AspNetCore.Components.WebView](https://github.com/dotnet/aspnetcore) | 7.0.9 to 7.0.10 | | [Microsoft.JSInterop](https://github.com/dotnet/aspnetcore) | 7.0.9 to 7.0.10 | | [Microsoft.AspNetCore.Components.Web](https://github.com/dotnet/aspnetcore) | 7.0.9 to 7.0.10 | | [Microsoft.AspNetCore.Authentication.Facebook](https://github.com/dotnet/aspnetcore) | 7.0.9 to 7.0.10 | | [Microsoft.AspNetCore.Authentication.Google](https://github.com/dotnet/aspnetcore) | 7.0.9 to 7.0.10 | | [Microsoft.AspNetCore.Authentication.MicrosoftAccount](https://github.com/dotnet/aspnetcore) | 7.0.9 to 7.0.10 | Updates `Microsoft.AspNetCore.Authorization` from 7.0.9 to 7.0.10 - [Release notes](https://github.com/dotnet/aspnetcore/releases) - [Changelog](https://github.com/dotnet/aspnetcore/blob/main/docs/ReleasePlanning.md) - [Commits](dotnet/aspnetcore@v7.0.9...v7.0.10) Updates `Microsoft.AspNetCore.Components.WebView` from 7.0.9 to 7.0.10 - [Release notes](https://github.com/dotnet/aspnetcore/releases) - [Changelog](https://github.com/dotnet/aspnetcore/blob/main/docs/ReleasePlanning.md) - [Commits](dotnet/aspnetcore@v7.0.9...v7.0.10) Updates `Microsoft.JSInterop` from 7.0.9 to 7.0.10 - [Release notes](https://github.com/dotnet/aspnetcore/releases) - [Changelog](https://github.com/dotnet/aspnetcore/blob/main/docs/ReleasePlanning.md) - [Commits](dotnet/aspnetcore@v7.0.9...v7.0.10) Updates `Microsoft.AspNetCore.Components.Web` from 7.0.9 to 7.0.10 - [Release notes](https://github.com/dotnet/aspnetcore/releases) - [Changelog](https://github.com/dotnet/aspnetcore/blob/main/docs/ReleasePlanning.md) - [Commits](dotnet/aspnetcore@v7.0.9...v7.0.10) Updates `Microsoft.AspNetCore.Authentication.Facebook` from 7.0.9 to 7.0.10 - [Release notes](https://github.com/dotnet/aspnetcore/releases) - [Changelog](https://github.com/dotnet/aspnetcore/blob/main/docs/ReleasePlanning.md) - [Commits](dotnet/aspnetcore@v7.0.9...v7.0.10) Updates `Microsoft.AspNetCore.Authentication.Google` from 7.0.9 to 7.0.10 - [Release notes](https://github.com/dotnet/aspnetcore/releases) - [Changelog](https://github.com/dotnet/aspnetcore/blob/main/docs/ReleasePlanning.md) - [Commits](dotnet/aspnetcore@v7.0.9...v7.0.10) Updates `Microsoft.AspNetCore.Authentication.MicrosoftAccount` from 7.0.9 to 7.0.10 - [Release notes](https://github.com/dotnet/aspnetcore/releases) - [Changelog](https://github.com/dotnet/aspnetcore/blob/main/docs/ReleasePlanning.md) - [Commits](dotnet/aspnetcore@v7.0.9...v7.0.10) --- updated-dependencies: - dependency-name: Microsoft.AspNetCore.Authorization dependency-type: direct:production update-type: version-update:semver-patch dependency-group: aspnetcore - dependency-name: Microsoft.AspNetCore.Components.WebView dependency-type: direct:production update-type: version-update:semver-patch dependency-group: aspnetcore - dependency-name: Microsoft.JSInterop dependency-type: direct:production update-type: version-update:semver-patch dependency-group: aspnetcore - dependency-name: Microsoft.AspNetCore.Components.Web dependency-type: direct:production update-type: version-update:semver-patch dependency-group: aspnetcore - dependency-name: Microsoft.AspNetCore.Authentication.Facebook dependency-type: direct:production update-type: version-update:semver-patch dependency-group: aspnetcore - dependency-name: Microsoft.AspNetCore.Authentication.Google dependency-type: direct:production update-type: version-update:semver-patch dependency-group: aspnetcore - dependency-name: Microsoft.AspNetCore.Authentication.MicrosoftAccount dependency-type: direct:production update-type: version-update:semver-patch dependency-group: aspnetcore ... Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> * [create-pull-request] automated change (#16655) Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> * [ios] fix memory leak in SwipeItem (#16614) Context: #16346 This addresses the memory leak discovered by: src/Core/src/Handlers/SwipeItemMenuItem/SwipeItemMenuItemHandler.iOS.cs(10,30): error MA0001: Event 'FrameChanged' could cause memory leaks in an NSObject subclass. Remove the event or add the [UnconditionalSuppressMessage("Memory", "MA0001")] attribute with a justification as to why the event will not leak. I could reproduce the leak with a custom test in `SwipeViewTests`. Solved the problem by introducing `SwipeItemButtonProxy` with the same pattern from other PRs. * [ios/catalyst] fix memory leak in DatePicker (#16589) Context: #16346 This addresses the memory leak discovered by: src/Core/src/Platform/iOS/MauiDatePicker.cs(37,27): error MA0003: Subscribing to events with instance method 'OnValueChanged' could cause memory leaks in an NSObject subclass. Remove the subscription or convert the method to a static method. I could reproduce a leak in `MemoryTests.cs`: ++[InlineData(typeof(DatePicker))] public async Task HandlerDoesNotLeak(Type type) Solved the problem by fixing two places: * `MauiDatePicker` now uses a `UIDatePickerProxy` type, for iOS * `DatePickerHandler.MacCatalyst.cs` now uses a `UIDatePickerProxy` type, for MacCatalyst. Other changes: * Skip test on Android API 23 This is working for me locally on an API 23 emulator -- so I don't think it is really leaking. We skipped API 23 in another place: https://github.com/dotnet/maui/blob/9fcccd57b5a3d664e4788b3c7fc3edc10010beaf/src/Controls/tests/DeviceTests/Elements/NavigationPage/NavigationPageTests.cs#L302-L303 We are more interested in iOS on this PR anyway. * [build] Bump XCode to 14.31 (#16374) * Add doc comments for common types used in templates, maps, webview (#16552) * Add doc comments for common types used in templates, maps, webview * Enable WarnigsAsErrors for inline docs on Maps I went through every type/method/etc. used in the default MAUI app template and ensured there are doc for all of them. I also added a few miscellaneous docs for WebView types and Map (many were copied from Xamarin.Forms docs). --------- Co-authored-by: Gerald Versluis <gerald.versluis@microsoft.com> * Update CODEOWNERS (#16682) * Fix the case where silent was requested (#16676) * Use the correct WASDK property (#16683) * Re-land "[Windows] fixing window glitches while moving or resizing" (#16637) Initially merged in #14861 but there was a few test failures due to 83398c3 so it was reverted in #16541 * Update dependencies from https://github.com/xamarin/xamarin-macios build 20230815.5 Microsoft.tvOS.Sdk From Version 16.4.8694-net8-p7 -> To Version 16.4.8751-net8-rc1 * Update dependencies from https://github.com/xamarin/xamarin-macios build 20230815.5 Microsoft.MacCatalyst.Sdk From Version 16.4.8694-net8-p7 -> To Version 16.4.8751-net8-rc1 * Update dependencies from https://github.com/xamarin/xamarin-macios build 20230815.5 Microsoft.macOS.Sdk From Version 13.3.8694-net8-p7 -> To Version 13.3.8751-net8-rc1 * Update dependencies from https://github.com/xamarin/xamarin-macios build 20230815.5 Microsoft.iOS.Sdk From Version 16.4.8694-net8-p7 -> To Version 16.4.8751-net8-rc1 --------- Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: Scott Banning <scoban@microsoft.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com> Co-authored-by: Juan Diego Herrera <juherrera@microsoft.com> Co-authored-by: Matthew Leibowitz <mattleibow@live.com> Co-authored-by: Javier Suárez <javiersuarezruiz@hotmail.com> Co-authored-by: Rachel Kang <rachelkang@microsoft.com> Co-authored-by: Samantha Houts <samhouts@users.noreply.github.com> Co-authored-by: Stephane Delcroix <stephane@delcroix.org> Co-authored-by: Jonathan Peppers <jonathan.peppers@microsoft.com> Co-authored-by: dotnet-maestro[bot] <42748379+dotnet-maestro[bot]@users.noreply.github.com> Co-authored-by: dotnet-maestro[bot] <dotnet-maestro[bot]@users.noreply.github.com> Co-authored-by: Rui Marinho <me@ruimarinho.net> Co-authored-by: Mausam Shrestha <46900712+mausam-shrestha@users.noreply.github.com> Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: Shane Neuville <shneuvil@microsoft.com> Co-authored-by: Stephane Delcroix (HE/HIM) (from Dev Box) <stdelc@microsoft.com> Co-authored-by: Tim Miller <drasticactions@users.noreply.github.com> Co-authored-by: Rolf Bjarne Kvinge <rolf@xamarin.com> Co-authored-by: TJ Lambert <50846373+tj-devel709@users.noreply.github.com> Co-authored-by: E.Z. Hart <hartez@users.noreply.github.com> Co-authored-by: Javier Suárez <6755973+jsuarezruiz@users.noreply.github.com> Co-authored-by: scoban <sbanni@users.noreply.github.com> Co-authored-by: Eilon Lipton <Eilon@users.noreply.github.com>

jonathanpeppers added platform/iOS 🍎 memory-leak 💦 Memory usage grows / objects live forever (sub: perf) labels Aug 7, 2023

Eilon added the area-controls-datetimepicker DatePicker, TimePicker label Aug 7, 2023

ghost added the legacy-area-controls Label, Button, CheckBox, Slider, Stepper, Switch, Picker, Entry, Editor label Aug 7, 2023

Eilon approved these changes Aug 7, 2023

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jonathanpeppers requested a review from jsuarezruiz August 7, 2023 22:28

jonathanpeppers marked this pull request as ready for review August 7, 2023 22:28

jonathanpeppers requested a review from rmarinho August 7, 2023 22:28

jonathanpeppers marked this pull request as draft August 7, 2023 22:59

jonathanpeppers added 3 commits August 8, 2023 10:13

See if commenting this fixes Android

bc6d952

I can't seem to reproduce this locally...

Revert "See if commenting this fixes Android"

ec8622e

This reverts commit bc6d952.

Skip test on Android API 23

d4f7b29

jonathanpeppers commented Aug 8, 2023

View reviewed changes

Merge branch 'main' into DatePickerOhNo

69218de

samhouts added this to the .NET 8 GA milestone Aug 9, 2023

jonathanpeppers marked this pull request as ready for review August 9, 2023 18:48

jsuarezruiz approved these changes Aug 10, 2023

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jonathanpeppers merged commit 39c144b into dotnet:main Aug 10, 2023
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jonathanpeppers deleted the DatePickerOhNo branch August 10, 2023 14:11

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Eilon removed the legacy-area-controls Label, Button, CheckBox, Slider, Stepper, Switch, Picker, Entry, Editor label May 10, 2024

samhouts added the fixed-in-8.0.0-rc.1.9171 Look for this fix in 8.0.0-rc.1.9171 label Aug 2, 2024

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[ios/catalyst] fix memory leak in DatePicker #16589

[ios/catalyst] fix memory leak in DatePicker #16589

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[ios/catalyst] fix memory leak in DatePicker #16589

[ios/catalyst] fix memory leak in DatePicker #16589

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