Android Device Monitor is a standalone tool that provides a UI for several Android application debugging and analysis tools. Android Device Monitor doesn't require installation of an integrated development environment, such as Android Studio, and encapsulates the following tools:
To start Android Device Monitor:
tools/directory, enter the following command:
Next, start an Android Emulator or connect an Android device to your development computer through a USB cable. Connect Android Device Monitor to the device by selecting it in the Devices tab.
Note: Only one debugger can be connected to your device at a time.