What is launching-activities-with-activityscenario?

A guide to starting, controlling, recreating, and closing an Android Activity from an instrumentation test, which runs against a real or emulated device. It uses ActivityScenario, the modern replacement for the deprecated ActivityTestRule.

Use it when testing an Activity's screens and lifecycle states, simulating recreation, running code on the UI thread, or checking results returned after the Activity finishes.

It removes uncertainty around Activity lifecycles, UI-thread work, configuration changes, test cleanup, and returning results from an Activity.

launching-activities-with-activityscenario — Skill for Claude Code and

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add skydoves/android-testing-skills --skill launching-activities-with-activityscenario

Clone the repo

git clone --depth 1 https://github.com/skydoves/android-testing-skills

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/skydoves/android-testing-skills/launching-activities-with-activityscenario/github.svg)](https://agentmods.dev/skills/skydoves/android-testing-skills/launching-activities-with-activityscenario)

Your own site

<a href="https://agentmods.dev/skills/skydoves/android-testing-skills/launching-activities-with-activityscenario"><img src="https://agentmods.dev/badge/skills/skydoves/android-testing-skills/launching-activities-with-activityscenario/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/skydoves/android-testing-skills/launching-activities-with-activityscenario"><img src="https://agentmods.dev/badge/skills/skydoves/android-testing-skills/launching-activities-with-activityscenario.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 212 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,904 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits

NVIDIA SkillSpector pass 7 Sept 2026

How audits are shown

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00212	$0.03904
Opus 5	$0.00106	$0.01952
Sonnet 5	$0.00042	$0.00781
Haiku 4.5	$0.00021	$0.00390

Measured 11d ago against content hash bdded6a83ddd, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

launching-activities-with-activityscenario scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

instrumentation/scenarios/launching-activities-with-activityscenario/SKILL.md · 301 lines

How it starts

The opening of the file, as written. The whole thing — 301 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Launching Activities with ActivityScenario — The Canonical ActivityTestRule Replacement

ActivityScenario is the modern replacement for the deprecated ActivityTestRule. It provides a thread-safe, lifecycle-aware handle to drive an Activity through CREATED / STARTED / RESUMED / DESTROYED, recreate it for configuration-change emulation, and post work onto its UI thread via onActivity { }. The JUnit4 wrapper ActivityScenarioRule calls launch in before and close in after. This skill encodes the canonical FQN trap, the threading rules, and the manifest requirement.

When to use this skill

The user is starting a new instrumentation test that needs an Activity host.
The user is migrating from ActivityTestRule (deprecated) and asks for the replacement.
A test fails with ActivityNotFoundException and the Activity is missing from the test APK manifest.
A recreate() test "loses" state and the user is debugging remember vs rememberSaveable.
The user posts an action onto the UI thread and the test deadlocks (onActivity called from the wrong thread).
A test calls setResult(...) + finish() and wants to read the Activity.RESULT_* back.
The user mentions Settings.Global.ALWAYS_FINISH_ACTIVITIES ("Don't keep activities") as a way to test recreation — ActivityScenario rejects it.

When NOT to use this skill

The host is a Fragment, not an Activity — see ../launching-fragments-with-fragmentscenario/SKILL.md.
The host is androidx.activity.ComponentActivity for Compose tests — createComposeRule() already wraps the scenario; see ../../../compose/setup/configuring-test-dependencies/SKILL.md.
The runner / dependency stack is not yet set up — start with ../../runner/running-instrumented-tests-with-androidjunit4/SKILL.md.
The user needs to interact with system UI or another app — see ../../uiautomator/cross-app-tests-with-uiautomator/SKILL.md.
The user is choosing between host (Robolectric) and device tests — see ../../../compose/setup/setting-up-host-vs-device-tests/SKILL.md.

Read the full file on GitHub · 301 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

11d ago First seen · 301 lines · 212 tokens per session scan A bdded6a83ddd

Subscribe to this mod's changes

launching-activities-with-activityscenario is a skill published in the GitHub repository skydoves/android-testing-skills (319 stars, last pushed 3mo ago), licensed Apache-2.0. It adds 212 tokens to every session and 3,904 once invoked, about $0.0011 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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launching-activities-with-activityscenario