How Do I Debug an Android App?

Android, Android Apps

Debugging an Android app is an essential process for any developer. It helps identify and fix errors that can cause the app to crash or misbehave. In this tutorial, we will discuss the steps to debug an Android app.

Step 1: Enable USB Debugging

To begin with, you need to enable USB debugging on your Android device. This option is usually found in the Developer Options menu, which can be enabled by following these steps:

  • Go to Settings
  • Scroll down to About Phone
  • Tap on Build Number seven times until you see a message stating that Developer Options have been enabled.
  • Go back to Settings and look for Developer Options
  • Toggle on USB Debugging option

Step 2: Connect Your Device

The next step is to connect your Android device to your computer via a USB cable. Once connected, you will see a prompt asking for permission to allow USB debugging. Click ‘OK’ to proceed.

Step 3: Launch Android Studio

Launch Android Studio and open the project that you want to debug.

Step 4: Start Debugging

Once your device is connected and recognized by Android Studio, click on the ‘Debug’ button located at the top of the screen or press ‘Shift + F9’. This will launch your app in debug mode.

Debugging Tools in Android Studio

Android Studio provides many tools for debugging your app. Some of them are:

  • The Debugger: Allows you to set breakpoints, inspect variables, and control program execution.
  • The Logcat: Displays system messages, including error messages generated by your app.
  • The Profiler: Provides real-time statistics on app performance, including CPU usage, memory usage, and network activity.

Common Debugging Techniques

Here are some common debugging techniques that you can use to identify and fix errors in your app:

  • Set Breakpoints: This allows you to pause program execution at specific points in your code and inspect variables to see why they may not be working as expected.
  • Inspect Variables: You can use the debugger to inspect variables at runtime to see if they contain the values you expect them to.
  • Log Messages: Use the Logcat to log messages at different points in your app. This can help you identify where errors are occurring and what is causing them.
  • Use Emulators: Android Studio’s emulator allows you to simulate different devices and test your app under various conditions. This can help you identify issues that may only occur on certain devices or under certain circumstances.


Debugging an Android app is an important skill for any developer. By using the tools provided by Android Studio, you can quickly identify and fix errors in your code, leading to a better user experience for your audience. Remember to enable USB debugging on your device before starting the process, connect it via USB cable, launch Android Studio, and start debugging!