Troubleshooting When Android Studio Does Not Recognize a Physical Device

Troubleshooting When Android Studio Does Not Recognize a Physical Device

22 April 2024 Stephan Petzl Leave a comment Tech-Help

Developers often encounter issues where Android Studio does not recognize a connected physical device, which can hinder the app testing process. This article aims to provide a comprehensive guide to solve such problems based on collective knowledge and proven solutions.

Initial Checks

  • Ensure USB debugging is enabled on your device.
  • Check if the device is properly connected to your system.
  • Restart both your development machine and the Android device.

Setting the Device to Connect as Camera (PTP)

Some devices require setting the USB connection mode to Camera (PTP) for Android Studio to recognize them, even after enabling USB debugging. This can be done from the device’s notification shade or settings menu under USB options.

ADB Permissions and Restart

Incorrect ADB permissions can also cause recognition issues. Open a terminal and navigate to your SDK’s platform-tools directory:

~/Android/Sdk/platform-tools> ./adb devices

If the device is listed but with “no permissions”, restart ADB with proper permissions:

~/Android/Sdk/platform-tools$> ./adb kill-server
~/Android/Sdk/platform-tools$> sudo ./adb devices

This should resolve SDK version resolution issues in Android Studio.

USB Configuration

Ensure the USB configuration is set to Transferring Files or Media Transfer Protocol (MTP). This option can usually be found in the device’s Settings under ‘Connected Devices’ or similar sections.

Creating a Udev Rule

On Ubuntu, you might need to add a udev rule to consistently access the device:

  1. Identify your device using lsusb and note the vendor and product IDs.
  2. Create and edit the udev rule file: sudo nano /etc/udev/rules.d/51-android.rules.
  3. Add the following content with your vendor and product IDs: SUBSYSTEM=="usb", ATTR{idVendor}=="18d1", ATTR{idProduct}=="4ee7", MODE="0660", GROUP="plugdev", SYMLINK+="android%n".
  4. Reconnect your device or restart the ADB server.

For a more detailed guide on managing ADB on Ubuntu, you can refer to our articles on setting up ADB on macOS and troubleshooting ADB connection errors.

Repeato – Streamlining Your Testing Process

While troubleshooting connection issues is essential, streamlining your testing process is equally important. Repeato is a no-code test automation tool that can significantly enhance your testing workflow for iOS and Android apps. With its ability to work with various app frameworks and its integration of ADB commands through script steps, Repeato simplifies the creation, execution, and maintenance of automated tests.

Repeato’s use of computer vision and AI ensures fast test editing and running, making it an indispensable tool in your development toolkit. Discover how Repeato can help you overcome challenges in app testing by visiting our product page: Repeato vs. Appium.

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