Solving Android Debug Bridge Connectivity Errors > 자유게시판

When working with ADB, you may encounter communication failures that hinder development. These problems can stem from different configuration errors, but are usually quick to correct once you know the root cause. The frequent error is when ADB cannot identify your connected device. Start by checking that USB debugging is activated on your Android device. You can find this setting under Advanced Development Settings in the device’s settings menu. If Developer Settings is not visible, you can activate it by navigating to About Device and pressing the build number repeatedly.

Next, verify that the USB cable you are using supports data transfer. Some cables are designed solely for charging and will prevent ADB communication. Try swapping the cable or test the current one with a second Android phone to confirm it works. Also, ensure the device is connected bypassing any intermediaries rather than through a powered dock, as hubs can cause signal degradation.

If the device still does not appear when you run adb devices, check whether the correct drivers are installed read more on hackmd.io your computer. On Windows 10, you might need to download and install the device-specific drivers from the brand’s developer portal. On macOS Sonoma and Ubuntu, the drivers are usually handled in the background, but you may still need to reset the ADB daemon. To do this, run the two commands sequentially in your command prompt.

Sometimes, the ADB server itself locks up. If you see devices listed as unauthorized or zero detected devices, try rebooting both your device and your computer. You can also clear the ADB authorization by going to Developer options on your device and tapping Revoke USB debugging authorizations, then reconnecting the device and confirming the authorization to enable debugging.

Network connections can also be a source of trouble. If you are connecting via TCP, make sure both the device and the computer are on the same network. Use adb tcpip 5555 to switch the device to TCP mode, then connect using adb connect [IP_ADDRESS]. If the connection fails, check your firewall settings as they may be blocking port 5555.

Lastly, always ensure that your ADB version is current. Outdated versions may lack compatibility with recent OS versions that cause unreliable behavior. Download the updated ADB binaries from the Google’s SDK repository and replace the old files in your Android SDK path.

By following these steps, most ADB connection problems can be diagnosed and corrected. Always note down diagnostic outputs you see, as they can provide critical insights for resolving persistent problems.