ADB UI Tree Debugging Skill

Activation

When this skill is triggered, ALWAYS display this banner first:

╭─────────────────────────────────────────────────────────────╮
│  📱 SKILL ACTIVATED: adb-ui-tree                            │
├─────────────────────────────────────────────────────────────┤
│  Target: [app/screen being inspected]                       │
│  Action: Collecting UI hierarchy via ADB...                 │
│  Output: ui.xml, screen.png, accessibility logs             │
╰─────────────────────────────────────────────────────────────╯

Use this skill when you need to inspect Android UI trees, especially when an app blocks normal debugging/inspection. It provides a repeatable, automatic flow to collect UI hierarchy data, focused window info, and accessibility logs.

Preconditions

• ADB is installed and available.
• A device is connected and authorized (adb devices).
• The target app is open on screen.

Steps

1. Verify device connectivity

adb devices

If multiple devices are attached, use -s <serial> for all commands.

2. Confirm focused window

adb shell dumpsys window windows | grep -E "mCurrentFocus|mFocusedApp"

Ensure the focused app is the target (e.g., iSmart).

3. Try UIAutomator dump (may be blocked)

adb shell uiautomator dump /sdcard/ui.xml
adb pull /sdcard/ui.xml .

If the app blocks the dump, note the error and continue to step 4.

4. Collect accessibility hierarchy logs If the project includes a custom AccessibilityService that logs a hierarchy dump, trigger the automation and capture logcat:

adb logcat -s BatteryTrackerA11y

Save the output for analysis.

5. Capture a screenshot for manual inspection

adb exec-out screencap -p > screen.png

Use the screenshot to verify UI state and map coordinates if needed.

Notes / Fallbacks

• If the app exposes no accessibility nodes, consider coordinate-based taps as a fallback.
• If uiautomator dump is prohibited by the app, rely on AccessibilityService logs and screenshots.

Output to share

• ui.xml (if available)
• adb logcat -s BatteryTrackerA11y output
• screen.png