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android_ui_verification skill

by sickn33·sickn33/agentic-awesome-skills·47k stars·MIT

Automated end-to-end UI testing and verification on an Android Emulator using ADB.

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  • lowSKILL.md:1

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    android_ui_verification

Install the android_ui_verification skill

A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description. 

git clone --depth 1 https://github.com/sickn33/agentic-awesome-skills.git /tmp/agentic-awesome-skills
mkdir -p ~/.claude/skills
cp -r /tmp/agentic-awesome-skills/plugins/agentic-awesome-skills-claude/skills/android_ui_verification ~/.claude/skills/android_ui_verification
available in every project

In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub

The instructions your agent would load

SKILL.md as published, without the frontmatter. Read it on GitHub

Android UI Verification Skill

This skill provides a systematic approach to testing React Native applications on an Android emulator using ADB commands. It allows for autonomous interaction, state verification, and visual regression checking.

When to Use

  • Verifying UI changes in React Native or Native Android apps.
  • Autonomous debugging of layout issues or interaction bugs.
  • Ensuring feature functionality when manual testing is too slow.
  • Capturing automated screenshots for PR documentation.

🛠 Prerequisites

  • Android Emulator running.
  • adb installed and in PATH.
  • Application in debug mode for logcat access.

🚀 Workflow

1. Device Calibration

Before interacting, always verify the screen resolution to ensure tap coordinates are accurate.

adb shell wm size

Note: Layouts are often scaled. Use the physical size returned as the base for coordinate calculations.

2. UI Inspection (State Discovery)

Use the uiautomator dump to find the exact bounds of UI elements (buttons, inputs).

adb shell uiautomator dump /sdcard/view.xml && adb pull /sdcard/view.xml ./artifacts/view.xml

Search the view.xml for text, content-desc, or resource-id. The bounds attribute [x1,y1][x2,y2] defines the clickable area.

3. Interaction Commands

  • Tap: adb shell input tap (Use the center of the element bounds).
  • Swipe: adb shell input swipe (Used for scrolling).
  • Text Input: adb shell input text "" (Note: Limited support for special characters).
  • Key Events: adb shell input keyevent (e.g., 66 for Enter).

4. Verification & Reporting

Visual Verification

Capture a screenshot after interaction to confirm UI changes.

adb shell screencap -p /sdcard/screen.png && adb pull /sdcard/screen.png ./artifacts/test_result.png

Analytical Verification

Monitor the JS console logs in real-time to detect errors or log successes.

adb logcat -d | grep "ReactNativeJS" | tail -n 20

Cleanup

Always store generated files in the artifacts/ folder to satisfy project organization rules.

💡 Best Practices

  • Wait for Animations: Always add a short sleep (e.g., 1-2s) between interaction and verification.
  • Center Taps: Calculate the arithmetic mean of [x1,y1][x2,y2] for the most reliable tap target.
  • Log Markers: Use distinct log messages in the code (e.g., ✅ Action Successful) to make grep verification easy.
  • Fail Fast: If a uiautomator dump fails or doesn't find the expected text, stop and troubleshoot rather than blind-tapping.

Limitations

  • Use this skill only when the task clearly matches the scope described above.
  • Do not treat the output as a substitute for environment-specific validation, testing, or expert review.
  • Stop and ask for clarification if required inputs, permissions, safety boundaries, or success criteria are missing.

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