Debugging Coroutines in Android Studio: A Step-by-Step Guide

In the previous lesson on debugging, we explored a classic example of division by zero, which resulted in a java.lang.ArithmeticException when attempting to divide by zero. This crash was due to the impossibility of dividing by zero. In this lesson, we'll take it a step further and learn how to debug coroutines using Android Studio's integrated debugger.

To get started, create a new Android Studio project. Name your app 'Debugging' and set the language to Kotlin. On the Select a Project Template screen, choose Blank Activity. This will give us a clean slate to work with, allowing us to introduce some buggy code to demonstrate the debugging tools in Android Studio.

Before we dive into the debugging process, let's make sure you're familiar with navigating a project in Android Studio. You should also know how to use the Watches feature, which allows you to track specific variables instead of having to add log statements.

To get started with debugging, open your project and click on the 'Debug' button or press Shift + F9. This will launch the app in debug mode. Next, set a breakpoint by clicking on the gutter next to the line of code where you want to pause execution. You can also use conditional expressions to breakpoints to save time debugging.

Once your app is running and paused at a breakpoint, you can use the Watches pane to add variables that will aid with debugging. This allows you to track specific variables instead of having to add log statements.

To attach the debugger to your running app, click on the 'Attach Debugger to Android Process' button in the toolbar or press Shift + F8. This will allow you to debug your app without restarting it.

In this lesson, you'll learn how to use breakpoints to pause a running app and inspect the code one line at a time. You'll also learn how to execute single lines of code at a time using the debugger's 'Step Over' feature. By the end of this lesson, you'll be able to pinpoint the exact source of a bug in your code.

As we progress through this lesson, keep in mind that modern IDEs like Android Studio provide more functionality to make your debugging process more efficient. You'll learn how to use conditional expressions to breakpoints and add variables to the Watches pane to aid with debugging.

By following these steps and tips, you'll be well on your way to mastering the art of debugging coroutines in Android Studio. Remember, debugging is an essential part of the development process, and with practice, you'll become more proficient at identifying and fixing errors in your code.

Android studio debug coroutines