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.NET MAUI App Lifecycle · dotnet | DecimalAI

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.NET MAUI App Lifecycle

dotnet/maui-app-lifecycle

Source dotnet/skills ↗License MIT

.NET MAUI app lifecycle guidance — the four app states, cross-platform Window lifecycle events (Created, Activated, Deactivated, Stopped, Resumed, Destroying), platform-specific lifecycle mapping, backgrounding and resume behavior, and state-preservation patterns. USE FOR: "app lifecycle", "window lifecycle events", "save state on background", "resume app", "OnStopped", "OnResumed", "backgrounding", "deactivated event", "ConfigureLifecycleEvents", "platform lifecycle hooks". DO NOT USE FOR: navi

SkillScore100Maintained

Automatic

Frontend / UI pack

Last verified 8/10/2026

What it changes

Passed 23 of 23 test cases with the skill, and 19 of 23 without it.

Without skill83%

With skill100%

Checks it passed that the model alone missed

The response does not perform state saving in OnDeactivated.
The code attaches to native events using .OnLaunched() and .OnClosed().
The code overrides OnDestroying to handle Android back-button terminations.

and 3 more in the full report

4 fixed19 passed either way0 still failing0 broke

Pass-rate lift: +17 pp
Tokens: +55%
Agent turns: 0%
Response time: -35%

Model gemini-3.6-flashMeasured 8/10/2026v123 of 23 cases passed with skill

Tokens, turns and time describe resource use, not a dollar price.

Use this skill

Save it into your project's skills folder. Claude Code picks it up in its next session.

curl -fsSL --create-dirs -o .claude/skills/dotnet-maui-app-lifecycle/SKILL.md https://app.decimal.ai/s/dotnet-maui-app-lifecycle/SKILL.md

Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add dotnet-maui-app-lifecycle, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"

1 · One-time — install the CLI (docs ↗)

pip install "decimalai>=0.15"

2 · Get the skill — writes .agents/skills/dotnet-maui-app-lifecycle/ and pins it in .decimal/skills.lock

decimalai skills add dotnet-maui-app-lifecycle

No CLI? Get the same file — curl · raw file

curl -fsSL --create-dirs -o .claude/skills/dotnet-maui-app-lifecycle/SKILL.md https://app.decimal.ai/s/dotnet-maui-app-lifecycle/SKILL.md

Raw file: /s/dotnet-maui-app-lifecycle/SKILL.md ↗ · machine-readable summary at /s/dotnet-maui-app-lifecycle.json ↗

Safety checks: 3 of 3 passed

Code scan CleanIntent PassedContent Clean

See it in action

One of 4 test cases the skill fixed. Same model, same prompt, with and without the skill.

1 of 4

Prompt

I need to register Windows-specific native lifecycle hooks inside MauiProgram.cs using ConfigureLifecycleEvents for a .NET MAUI application. What builder extension method name is used for Windows native events, and how do you attach to the window launch and window closed events?

What was checked, without and with the skill
Checked	Without skill	With skill
The code calls .AddWindows() within ConfigureLifecycleEvents.	Passed	Passed
The code attaches to native events using .OnLaunched() and .OnClosed().	Missed	Passed

case-13 · gemini-3.6-flash · 8/10/2026 · answers are capped and redacted

What's inside

The instructions your model reads when the skill loads.

SKILL.md208 lines2 files

.NET MAUI App Lifecycle

Handle application state transitions correctly in .NET MAUI. This skill covers the cross-platform Window lifecycle events, their platform-native mappings, and patterns for preserving state across backgrounding and resume cycles.

When to Use

Saving or restoring state when the app backgrounds or resumes
Subscribing to Window lifecycle events (Created, Activated, Deactivated, Stopped, Resumed, Destroying)
Hooking into platform-native lifecycle callbacks via ConfigureLifecycleEvents
Deciding where to place initialization, teardown, or refresh logic
Understanding the difference between Deactivated and Stopped

When Not to Use

Page-level navigation events — use Shell navigation guidance instead
Registering services at startup — use dependency injection guidance instead
Calling platform-specific APIs outside lifecycle context — use platform invoke guidance instead

Inputs

The target lifecycle transition (e.g., "save draft when backgrounded", "refresh data on resume")
Which platforms the developer targets (Android, iOS, Mac Catalyst, Windows)
Whether the app uses multiple windows (iPad, Mac Catalyst, desktop Windows)

App States

A .NET MAUI app moves through four states:

State	Description
Not Running	Process does not exist
Running	Foreground, receiving input
Deactivated	Visible but lost focus (dialog, split-screen, notification shade)
Stopped	Fully backgrounded, UI not visible

Typical flow: Not Running → Running → Deactivated → Stopped → Running (resumed) or Not Running (terminated).

Window Lifecycle Events

Microsoft.Maui.Controls.Window exposes six cross-platform events:

Track record

Benchmark

23 / 23

test cases passed, vs 19 / 23 without

Adoption

Users: 0
Times used: 0

Safety and source details

SkillSafety

✓ 3 of 3 passed

Code scan15 of 15 checks clean

0 critical · 0 warning · 0 info — scanner v4 — 8/3/2026

View 15 scanner checks

live_secretremote_code_executionreverse_shelldata_exfiltrationssrf_metadataagent_snoopinganti_refusaldestructive_commandsobfuscated_unicodeunicode_homoglyphopaque_blobsuspicious_urltool_overreachtrigger_abuseprompt_injection_phrasing

IntentSafe

LLM judge · does the skill do what it claims

ContentClean

LLM judge · policy & harmful-content review

Source

Imported

dotnet / skills

plugins/dotnet-maui/skills/maui-app-lifecycle/SKILL.md

View on GitHub ↗

License MITImported 8/3/2026Version v1Bundled 1 file

Other skills for the same job

Published skills whose descriptions closely match this one, with their headline benchmark lift.

managedcode/maui-app-lifecycle.NET MAUI app lifecycle guidance — the four app states, cross-platform Window lifecycle events (Created, Activated, Deactivated, Stopped, Resumed, Destroying), platform-specific lifecycle mapping, backgrounding and resume behavior, and state-preservation patterns. USE FOR: "app lifecycle", "window lifecycle events", "save state on background", "resume app", "OnStopped", "OnResumed", "backgrounding", "deactivated event", "ConfigureLifecycleEvents", "platform lifecycle hooks". DO NOT USE FOR: naviNear-identical description+17 pp pass-rate lift

More skills from the same source and nearby in the registry, with their headline benchmark lift.

Ready to supercharge your AI agents?

See it in action

What's inside

.NET MAUI App Lifecycle

When to Use

When Not to Use

Inputs

App States

Window Lifecycle Events

Track record

Benchmark

Adoption

SkillSafety

Source

Other skills for the same job

Related skills