How to detect memory leaks in Android

Memory leak is one of the most critical issues that can occur in an app. Fixing them is often challenging as the developer will not have access to the relevant data to identify the root cause. All that developer may get to see is an OutOfMemory (OOM) Exception with a stack trace that is of no practical use.

There are tools like LeakCanary for Android and XCode Leaks Instrument for iOS. These tools will help identify the leaks in the development environment. That is, if the developer proactively profiles the app for all possible use cases.

Finotes production mode Android SDK detects memory leaks in Android Activities and Services out of the box and reports the bugs to the dashboard with important data such as activity trail, device info and device state info. This will help developer to be aware of the leaks happening in their app that is running in their users’ devices and also helps them to reproduce the memory leak.

Here is a screenshot of such a leak detected by Finotes in a live app.

Now the developer can use debug mode SDK of Finotes to drill down the issue further in the development environment. As seen in the below screenshot, debug mode SDK of Finotes will detect the exact object that is causing the leak.

As seen in the screenshot, the static object ProgressBarManager is causing the leak. With this object level information, it is much easier now for the developer to fix memory leaks.

The memory leak detection is soon coming to Finotes iOS SDK.

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