30 November 2024 Leave a comment Tech-Help
When working with Android Debug Bridge (ADB) and multiple devices are connected, you might encounter the error: “error: more than one device and emulator”. This error occurs because ADB is unable to determine which device to target for the command. Here’s a comprehensive guide to resolve this issue and ensure smooth operation.
Understanding the Problem
The ADB tool helps communicate with Android devices and emulators. When multiple devices are connected, ADB requires a specific identifier to execute commands on the desired device. Without this identifier, ADB throws an error, indicating multiple devices are connected.
Steps to Resolve the Error
1. Identify Connected Devices
First, list all connected devices using the command:
adb devicesThis command will provide a list of devices with their unique identifiers.
2. Use the Device Serial Number
To specify a particular device, use the -s option followed by the device’s serial number:
adb -s shellFor example, if your device’s serial number is 7f1c864e, the command would be:
adb -s 7f1c864e shell3. Handling Multiple Emulators
If you are dealing with multiple emulators, use the emulator’s IP and port as the identifier:
adb -s 192.168.232.2:5555 Alternatively, if there’s only one emulator running, use:
adb -e 4. Setting Environment Variable
Another method is to set the ANDROID_SERIAL environment variable to the desired device’s serial number. On Windows:
set ANDROID_SERIAL=7f1c864eThis makes ADB commands default to the specified device without needing the -s option.
Using Repeato for Automated Testing
For those involved in mobile app development, managing multiple devices and tests can be streamlined using tools like Repeato. Repeato is a no-code test automation tool for iOS and Android, leveraging computer vision and AI to create and run automated tests efficiently.
Repeato simplifies the process by integrating ADB commands into its workflow, allowing you to execute commands via “script steps”. This feature ensures proper timing and sequencing of commands across multiple devices, enhancing your testing efficiency.
For more detailed insights into using ADB with Repeato, explore our documentation section.
