Agent skill

Maui App Lifecycle

by davidortinau in davidortinau/maui-skills

.NET MAUI app lifecycle guidance covering the four app states (not running, running, deactivated, stopped), cross-platform Window lifecycle events, backgrounding and resume behaviour…

MITAuto-check passedMobile

Install Maui App Lifecycle

skills CLI

$ npx skills add davidortinau/maui-skills --skill maui-app-lifecycle -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI

$ gh skill install davidortinau/maui-skills maui-app-lifecycle --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy

$ git clone --depth 1 https://github.com/davidortinau/maui-skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/plugins/maui-skills/skills/maui-app-lifecycle .claude/skills/maui-app-lifecycle && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Paste into Claude Code

Install the "maui-app-lifecycle" agent skill from https://github.com/davidortinau/maui-skills/tree/main/plugins/maui-skills/skills/maui-app-lifecycle into .claude/skills/maui-app-lifecycle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "maui-app-lifecycle", then confirm the skill loads.

Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

$skill-installer

$skill-installer install https://github.com/davidortinau/maui-skills/tree/main/plugins/maui-skills/skills/maui-app-lifecycle

Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.

skills CLI

$ npx skills add davidortinau/maui-skills --skill maui-app-lifecycle -a codex

Project install goes to .agents/skills/; add -g for ~/.codex/skills/.

GitHub CLI

$ gh skill install davidortinau/maui-skills maui-app-lifecycle --agent codex

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/davidortinau/maui-skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/plugins/maui-skills/skills/maui-app-lifecycle .agents/skills/maui-app-lifecycle && rm -rf skills-src

Use ~/.agents/skills/ instead of .agents/skills for a personal install.

Codex skills documentation · loads skills from .agents/skills/

Paste into Codex

Install the "maui-app-lifecycle" agent skill from https://github.com/davidortinau/maui-skills/tree/main/plugins/maui-skills/skills/maui-app-lifecycle into .agents/skills/maui-app-lifecycle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "maui-app-lifecycle", then confirm the skill loads.

Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add davidortinau/maui-skills --skill maui-app-lifecycle -a cursor

Project install goes to .agents/skills/; add -g for ~/.cursor/skills/.

GitHub CLI

$ gh skill install davidortinau/maui-skills maui-app-lifecycle --agent cursor

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/davidortinau/maui-skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/plugins/maui-skills/skills/maui-app-lifecycle .cursor/skills/maui-app-lifecycle && rm -rf skills-src

Use ~/.cursor/skills/ instead of .cursor/skills for a personal install.

Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/

Paste into Cursor

Install the "maui-app-lifecycle" agent skill from https://github.com/davidortinau/maui-skills/tree/main/plugins/maui-skills/skills/maui-app-lifecycle into .cursor/skills/maui-app-lifecycle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "maui-app-lifecycle", then confirm the skill loads.

Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

gemini skills install

$ gemini skills install https://github.com/davidortinau/maui-skills.git --path plugins/maui-skills/skills/maui-app-lifecycle

--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.

skills CLI

$ npx skills add davidortinau/maui-skills --skill maui-app-lifecycle -a gemini-cli

Project install goes to .agents/skills/; add -g for ~/.gemini/skills/.

GitHub CLI

$ gh skill install davidortinau/maui-skills maui-app-lifecycle --agent gemini-cli

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/davidortinau/maui-skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/plugins/maui-skills/skills/maui-app-lifecycle .gemini/skills/maui-app-lifecycle && rm -rf skills-src

Use ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.

Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/

Paste into Gemini CLI

Install the "maui-app-lifecycle" agent skill from https://github.com/davidortinau/maui-skills/tree/main/plugins/maui-skills/skills/maui-app-lifecycle into .gemini/skills/maui-app-lifecycle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "maui-app-lifecycle", then confirm the skill loads.

Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

GitHub CLI

$ gh skill install davidortinau/maui-skills maui-app-lifecycle

Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).

skills CLI

$ npx skills add davidortinau/maui-skills --skill maui-app-lifecycle -a github-copilot

Project install goes to .agents/skills/; add -g for ~/.copilot/skills/.

Manual copy

$ git clone --depth 1 https://github.com/davidortinau/maui-skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/plugins/maui-skills/skills/maui-app-lifecycle .github/skills/maui-app-lifecycle && rm -rf skills-src

Use ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.

GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/

Paste into GitHub Copilot

Install the "maui-app-lifecycle" agent skill from https://github.com/davidortinau/maui-skills/tree/main/plugins/maui-skills/skills/maui-app-lifecycle into .github/skills/maui-app-lifecycle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "maui-app-lifecycle", then confirm the skill loads.

GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

skills CLI

$ npx skills add davidortinau/maui-skills --skill maui-app-lifecycle -a opencode

OpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.

GitHub CLI

$ gh skill install davidortinau/maui-skills maui-app-lifecycle --agent opencode

Project scope by default (.agents/skills/); add --scope user for a personal install.

Manual copy

$ git clone --depth 1 https://github.com/davidortinau/maui-skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/plugins/maui-skills/skills/maui-app-lifecycle .opencode/skills/maui-app-lifecycle && rm -rf skills-src

Use ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.

OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/

Paste into OpenCode

Install the "maui-app-lifecycle" agent skill from https://github.com/davidortinau/maui-skills/tree/main/plugins/maui-skills/skills/maui-app-lifecycle into .opencode/skills/maui-app-lifecycle/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "maui-app-lifecycle", then confirm the skill loads.

OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.

Facts

Skill name: maui-app-lifecycle
GitHub stars: 175
Token cost: ~947 tokens
SKILL.md length: 230 words
Files: 2 (incl. references)
Skills in repo: 41
Repo updated: Jul 6, 2026
First seen: Oct 7, 2026
Licence: MIT

At a glance

.NET MAUI app lifecycle guidance covering the four app states (not running, running, deactivated, stopped), cross-platform Window lifecycle events, backgrounding and resume behaviour…

: app lifecycle
SKILL.md covers Critical Behavioral Gotchas, Performance: Keep Handlers Fast, iOS Scene Lifecycle and State Preservation Checklist
Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
Window lifecycle

What it does

Maui App Lifecycle is an agent skill from davidortinau/maui-skills. .NET MAUI app lifecycle guidance covering the four app states (not running, running, deactivated, stopped), cross-platform Window lifecycle events, backgrounding and resume behaviour, platform-specific lifecycle mapping for Android and iOS/Mac Catalyst, and state-preservation patterns. USE FOR: "app lifecycle", "OnStart", "OnSleep", "OnResume", "backgrounding", "app state", "window lifecycle", "save state on background", "resume app", "deactivated event", "lifecycle events". DO NOT USE FOR: navigation events (use…

Its SKILL.md is about 950 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/lifecycle-api.md`).

It sits in Mobile, covering Cross-platform mobile apps and Design patterns. It works with Android and iOS. The repository describes itself as: .NET MAUI skills for GitHub Copilot and Claude Code. The licence is MIT.

When your agent uses it

: app lifecycle
Window lifecycle
Save state on background
Deactivated event

Example prompts

“app lifecycle”
“OnStart”
“OnSleep”
“/maui-app-lifecycle”

What it can do on your machine

Read from SKILL.md and the folder at commit 79bb4bf. It shows what the files ask for, not the result of running them.

Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md (its code samples are csharp).
From the folder's file list and the shell code blocks in SKILL.md.
Network
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Maui App Lifecycle loads about 947 tokens when it runs, and up to ~2.3k if it reads all its reference files. Until then it costs about 167 tokens; SKILL.md has 230 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it: ~167
When it runs · the whole SKILL.md, loaded when a task matches: ~947
With references · SKILL.md plus every file in references/, read only if the agent opens them: ~2.3k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from davidortinau/maui-skills at commit 79bb4bf, republished under its MIT licence (© davidortinau). 230 words, ~947 tokens.

Download SKILL.mdSave it as .claude/skills/maui-app-lifecycle/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.

name: maui-app-lifecycle
description: .NET MAUI app lifecycle guidance covering the four app states (not running, running, deactivated, stopped), cross-platform Window lifecycle events, backgrounding and resume behaviour, platform-specific lifecycle mapping for Android and iOS/Mac Catalyst, and state-preservation patterns. USE FOR: "app lifecycle", "OnStart", "OnSleep", "OnResume", "backgrounding", "app state", "window lifecycle", "save state on background", "resume app", "deactivated event", "lifecycle events". DO NOT USE FOR: navigation events (use maui-shell-navigation), dependency injection setup (use maui-dependency-injection), or platform APIs (use maui-platform-invoke).

.NET MAUI App Lifecycle

Critical Behavioral Gotchas

⚠️ Resumed ≠ first launch

Resumed only fires when returning from the Stopped state. On first launch the sequence is Created → Activated — Resumed is never called.

csharp

// ❌ Putting initialization logic in OnResumed — won't run on first launch
protected override void OnResumed()
{
    LoadUserProfile();  // Skipped on cold start!
}

// ✅ Use OnActivated for logic that must run on every foreground entry
protected override void OnActivated()
{
    LoadUserProfile();  // Runs on both first launch and resume
}

⚠️ Deactivated ≠ Stopped

A dialog, split-screen, or notification pull-down triggers Deactivated without Stopped. Don't save heavy state on Deactivated — the app may never actually background.

csharp

// ❌ Heavy save on every deactivation — fires too often
protected override void OnDeactivated()
{
    await SaveAllDataToDatabase();  // Wasteful for a dialog appearance
}

// ✅ Save state only when truly backgrounded
protected override void OnStopped()
{
    await SaveAllDataToDatabase();
}

⚠️ Android back button skips Stopped

On Android, pressing the hardware back button may call Destroying without Stopped if the activity finishes. Critical save logic in OnStopped alone can be missed.

csharp

// ✅ Save in both Stopped and Destroying for safety on Android
protected override void OnStopped()
{
    base.OnStopped();
    SaveDraft();
}

protected override void OnDestroying()
{
    base.OnDestroying();
    SaveDraft();  // Catches Android back-button finish
}

⚠️ Multiple windows fire independently

On iPad, Mac Catalyst, and desktop Windows, each Window instance fires its own lifecycle events independently. Don't assume a single global lifecycle.

Performance: Keep Handlers Fast

Long-running work in lifecycle handlers causes ANR kills on Android (5s timeout) and watchdog kills on iOS (limited background time).

csharp

// ❌ Blocking the lifecycle handler
protected override void OnStopped()
{
    Thread.Sleep(3000);  // ANR on Android!
    SaveData();
}

// ✅ Fire-and-forget or use a brief async save
protected override void OnStopped()
{
    base.OnStopped();
    Preferences.Set("draft_text", _viewModel.DraftText);  // Fast, synchronous
}

For larger state, use SecureStorage or file-based serialization — but keep it under 1–2 seconds.

iOS Scene Lifecycle

iOS 13+ uses the scene lifecycle (SceneWillConnect, etc.). Older delegate methods are still forwarded by MAUI, but you should target scene-based APIs for modern iOS.

State Preservation Checklist

Transient UI state (scroll position, draft text) saved in OnStopped
State restored in OnResumed — not in OnActivated (avoid double-restore)
No heavy I/O in OnDeactivated — it fires too frequently
Android: critical save logic also in OnDestroying (back-button case)
Lifecycle handlers complete in under 2 seconds
Multi-window apps handle per-window state independently

Files

SKILL.md and 1 other file (references) in plugins/maui-skills/skills/maui-app-lifecycle of davidortinau/maui-skills.

SKILL.md
references/lifecycle-api.md

Open the folder on GitHubat commit 79bb4bf

Compare with similar skills

Maui App Lifecycle next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Maui App Lifecycle compared with similar skills
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Maui App Lifecycle this skilldavidortinau/maui-skills	175	—	~947	Automated safety check: Pass	MIT	3 mo ago
Flutter Appccplugins/awesome-claude-code-plugins	970	—	~1.1k	Automated safety check: Notes	Apache-2.0	1 mo ago
Engine Whats Newflutter/flutter	179k	—	~978	Automated safety check: Pass	BSD-3-Clause	today
Rnn Codebasewix/react-native-navigation	13k	—	~2k	Automated safety check: Pass	MIT	3 days ago
Building Native UICherryHQ/cherry-studio-app	4k	8 repos	~2.6k	Automated safety check: Pass	MIT	today
Expo Tailwind SetupCherryHQ/cherry-studio-app	4k	8 repos	~3k	Automated safety check: Pass	MIT	today

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Works with

Questions about Maui App Lifecycle

What does Maui App Lifecycle do?

.NET MAUI app lifecycle guidance covering the four app states (not running, running, deactivated, stopped), cross-platform Window lifecycle events, backgrounding and resume behaviour…. Maui App Lifecycle is an agent skill from davidortinau/maui-skills.NET MAUI app lifecycle guidance covering the four app states (not running, running, deactivated, stopped), cross-platform Window lifecycle events, backgrounding and resume behaviour, platform-specific lifecycle mapping for Android and iOS/Mac Catalyst, and state-preservation patterns.

When should I use Maui App Lifecycle?

Maui App Lifecycle fits situations like: : app lifecycle; window lifecycle; save state on background; deactivated event.

How do I install Maui App Lifecycle in Claude Code?

Run `npx skills add davidortinau/maui-skills --skill maui-app-lifecycle -a claude-code`. Or copy the skill folder (plugins/maui-skills/skills/maui-app-lifecycle in davidortinau/maui-skills) into .claude/skills/maui-app-lifecycle in your project. Claude Code loads it when a task matches its description.

How do I install Maui App Lifecycle in Codex?

Run `npx skills add davidortinau/maui-skills --skill maui-app-lifecycle -a codex`. Or copy the skill folder (plugins/maui-skills/skills/maui-app-lifecycle in davidortinau/maui-skills) into .agents/skills/maui-app-lifecycle in your project. Codex loads it when a task matches its description.

Can I use Maui App Lifecycle in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add davidortinau/maui-skills --skill maui-app-lifecycle -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/maui-app-lifecycle, .gemini/skills/maui-app-lifecycle, .github/skills/maui-app-lifecycle and .opencode/skills/maui-app-lifecycle in your project.

What does Maui App Lifecycle need to run?

SKILL.md names no scripts, command-line tools or credentials: Maui App Lifecycle is instructions for the agent only.

Does Maui App Lifecycle access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Maui App Lifecycle safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Maui App Lifecycle use?

Maui App Lifecycle is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Maui App Lifecycle use?

About 947 tokens (SKILL.md is roughly 3.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.3k tokens, read only when the agent opens those files.

What are the alternatives to Maui App Lifecycle?

Skills that share tags, products or a category with Maui App Lifecycle: Flutter App (ccplugins/awesome-claude-code-plugins, 970 stars), Engine Whats New (flutter/flutter, 179k stars), Rnn Codebase (wix/react-native-navigation, 13k stars) and Building Native UI (CherryHQ/cherry-studio-app, 4k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Maui App Lifecycle?

davidortinau (a GitHub user) maintains it in davidortinau/maui-skills, which has 175 GitHub stars. The repository holds 41 skills in this directory. The repository was last updated on July 6, 2026.

Source: davidortinau/maui-skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.

Install Maui App Lifecycle

Facts

At a glance

What it does

When your agent uses it

Example prompts

What it can do on your machine

Tool permissions

Runs code

Network

Credentials

Context cost

Safety

SKILL.md

.NET MAUI App Lifecycle

Critical Behavioral Gotchas

⚠️ Resumed ≠ first launch

⚠️ Deactivated ≠ Stopped

⚠️ Android back button skips Stopped

⚠️ Multiple windows fire independently

Performance: Keep Handlers Fast

iOS Scene Lifecycle

State Preservation Checklist

Files

Compare with similar skills

Similar skills

More from davidortinau/maui-skills

Related

Questions about Maui App Lifecycle