launching-activities-with-activityscenario

What problem does it solve?

It solves flaky or failing Android instrumentation tests by showing the canonical, lifecycle-safe way to launch an Activity with ActivityScenario instead of deprecated ActivityTestRule, including correct threading, recreation, and teardown.

Core Features & Use Cases

• Canonical ActivityScenario launch & lifecycle control: Covers ActivityScenario.launch, launch with Intent, launchActivityForResult, moveToState across CREATED/STARTED/RESUMED/DESTROYED, and proper closing behavior.
• UI-thread safe interaction: Uses onActivity { } to mutate or read views/state without deadlocks and explains how to avoid calling scenario APIs from the main thread.
• Configuration-change emulation: Uses recreate() to trigger state save/restore flows and explains why rememberSaveable/SavedStateHandle/onSaveInstanceState survive while plain remember does not.
• Common migration traps: Clarifies the single canonical FQN for ActivityScenarioRule (androidx.test.ext.junit.rules.ActivityScenarioRule) and avoids the non-existent androidx.test.rule.ActivityScenarioRule confusion.

Quick Start

Use the launching-activities-with-activityscenario skill to show how to migrate from ActivityTestRule to ActivityScenarioRule and launch the Activity safely in an instrumentation test.