Layout Node Analysis Exception

Problem Description

When using layout analysis, encountering situations where nodes are not displayed, nodes are empty, or error messages appear.

Game Apps Cannot Perform Layout Analysis

• 🎮 Reason: Game apps typically use custom rendering engines (such as Unity, Cocos, Unreal, etc.),
  not native Android XML layouts, therefore no layout nodes exist for analysis.
• ✅ This is normal, cannot operate game screens through layout analysis methods.

Regular Apps Cannot Analyze Layout

1. Application Restricts Layout Access

• Some apps actively restrict other applications from capturing layout information to prevent automation tool interface analysis.
• Verification Method:
  • Return to phone home screen and try to analyze layout:
    • If home screen can display layout normally → Current app restricts layout access (can be solved through other automation modes);
    • If home screen also cannot display layout → Check automation mode and permissions.

2. Inspection Methods for Different Automation Modes

Accessibility Mode

• Check if accessibility service is enabled;
• If layout display is incomplete:
  • Try turning off Accessibility Stability Mode;
  • Then restart accessibility service;
• If still abnormal, try restarting phone and retry.

HID Mode

• Check if Digital Assistant (Assistant App) is enabled;
• Some interface layout display areas being incorrect is normal;
• Some popup interfaces may not fully display node structure.

ADB / Root Mode

• Some dynamic pages (such as video playback, animation interfaces) layouts cannot be stably captured;
• Console will display the following error: ERROR: could not get idle state. Interface has dynamic changes (such as video playback, animation), causing XML capture failure

In this case, HID mode layout analysis can be used instead