What is Debug in Android? Android Debugging Guide & Tips > 자유게시판

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Immediate action: enable Developer options and allow USB access on the device, connect with a USB cable and verify with adb devices. If you loved this post and you would like to get even more information concerning 1xbet promo codes kindly visit our own web-page. Capture runtime output with adb logcat -v time > session.log, reproduce the failure, then filter errors with adb logcat *:E or by tag adb logcat -s YourAppTag.

Attach a runtime inspector from the official IDE to set conditional breakpoints in Java/Kotlin or to use LLDB for native code. For native crashes, start gdbserver or use the IDE's native process attach; retrieve crash dumps from /data/tombstones and analyze stack traces with symbol files produced by your build system.

Gather system-wide metrics before and after the fault: collect a Perfetto trace or run adb bugreport > bugreport.zip for a full snapshot. Query memory and CPU with adb shell dumpsys meminfo <package>, adb shell dumpsys cpuinfo and adb shell top -n 1. Use heap dumps (hprof) and analyze them in the IDE profiler to find leaks and excessive allocations.

For CI and release hygiene, keep verbose logging and adb-access limited to development builds, strip debug symbols only for release artifacts while preserving separate symbol archives for postmortem analysis, and run automated tests that exercise heavy UI and background tasks so regressions surface in traces and logs rather than in customer reports.

Enable and Configure Debugging

Enable Developer options and permit ADB connections; restrict access to trusted hosts and revoke authorizations after each session.

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  Activate Developer options:

  
  

  Settings > About phone > tap Build number seven times (path may vary by vendor). Confirm Developer options appears in Settings.

  
  
  
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  Allow ADB access over USB:

  
  

  Open Developer options and enable the toggle that allows ADB connections via USB (label varies). Connect a USB cable, then run adb devices to verify the device appears as "device". If listed as "unauthorized", accept the pairing prompt on the device.

  
  
  
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  Install platform tools and verify host setup:

  
  

  Download SDK Platform-Tools and add the folder to PATH. Common commands:

  
  
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  • adb devices – list connected targets
    
  • adb kill-server then adb start-server – restart ADB daemon
    
  • Check key files at ~/.android/adbkey(.pub) and keep private key permissions to 600.
    
  
  
  
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  Enable wireless ADB:

  
  

  Options:

  
  
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  2. Via USB: adb tcpip 5555, find device IP (adb shell ip addr show wlan0), then adb connect <IP>:5555.
     
  3. Pairing mode (newer builds): enable wireless pairing in Developer options, run adb pair <IP>:<pair_port>, enter the PIN shown on device, then adb connect <IP>:<port>.
     
  
  
  
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  Port forwarding and reverse forwarding:

  
  

  Map local ports for local servers or debuggers:

  
  
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  • adb forward tcp:8081 tcp:8081 – host -> device
    
  • adb reverse tcp:8081 tcp:8081 – device -> host (useful for apps connecting to a local dev server)
    
  
  
  
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  Log and process inspection:

  
  

  Use targeted logcat filters to reduce noise: adb logcat YourAppTag:V *:S. For timestamps and thread info use adb logcat -v threadtime. Attach to a running process from your IDE using ADB-listed PID.

  
  
  
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  Security hygiene:

  
  
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  • Revoke authorizations after sessions via Developer options or adb usb / adb kill-server plus key removal.
    
  • Do not enable ADB over public networks; restrict to isolated Wi‑Fi or a secured hotspot.
    
  • Remove ~/.android/adbkey from shared machines and generate a dedicated keypair for each trusted workstation.
    
  
  
  
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  Advanced: persist TCP service for CI devices

  
  

  On test lab hardware, create a startup script that runs adb tcpip 5555 and ensures the device stays reachable on a reserved private IP. Prefer provisioning via a USB-first pairing step, then disable USB after wireless is established.

  
  
  

Enable USB debugging on the device

Enable Developer options: open Settings → About phone (or About device) and tap Build number seven times; enter your lock-screen PIN if prompted; go back to Settings → System → Developer options and toggle the main switch on.

Enable ADB over USB: in Developer options enable the entry that grants ADB access over USB (label varies by vendor and may reference ADB). If there is a separate "USB configuration" submenu, leave it on the default until prompted by the host.

Authorize host keys: when connecting to a computer for the first time, accept the RSA fingerprint dialog and only check "Always allow" for machines you fully trust; revoke saved host keys from Developer options (Revoke ADB authorizations) before giving the device to others.

USB mode and cable: set USB mode to File Transfer (MTP) instead of Charging only; use a known-good data-capable USB cable and a rear port on desktops. If the connection fails, try toggling between MTP, PTP and Charging, then reconnect the cable.

PC-side requirements and quick fixes: on Windows install the OEM or Google USB driver (via SDK Manager or vendor site); on macOS drivers are usually unnecessary; on Linux add a udev rule with your vendor ID (example rule: SUBSYSTEM=="usb", ATTRidVendor=="0bb4", MODE="0666"), then reload udev: sudo udevadm control --reload-rules && sudo udevadm trigger. Verify connection with the adb devices command.

Security hygiene: disable ADB over USB when not actively using it, revoke authorizations periodically, and keep the lock screen enabled to prevent unauthorized access while Developer options are enabled.