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How to find memory leaks in Flutter?

I need to find memory leaks in Flutter. How to find them? and how to create memory leaks for the test?

Solution

  • I am implemented Memory leak testing in android studio ide.

    Step - 1 : Connect your device with android studio and run your application on your device.

    Step - 2 : Go to View -> Tool Windows -> Flutter Performance

    Step - 3 : Bottom of the window Open Dev Tools option will be there, click on it. It will be navigate into new window of your browser. See below image for more details :

    enter image description here enter image description here

    Step - 4 : To follow the steps below as per the screenshot, you can see the size and details of the object causing the memory leak. First Select Memory from available menus than you can able to see below ui. enter image description here

    first: Click on settings icon

    then: Mark down Dart and Flutter checkboxes.

    and finally: Click on Apply button.

    Step - 5 : This is final step, now you can able to see memory leaking info. enter image description here

    first: Click on Snapshot it will be collect and display object list in bottom of the window.

    and then: Click on search icon and Here you can see those classes which objects are not destroyed. Suppose am selected ApiRepository.dart class and instance will be available in memory ,so that details are visible in window. If multiple objects created than you can see here the total no. of instance and total size.

    Step - 6 : You can able to call Garbage Collector manually by using GC icon . You can anytime Reset and get latest snapshot using Reset and Snapshot buttons.

    For more information about Memory allocation related details read below articles :

    1. Offical document about memory leak on flutter.dev
    2. Article about garbage collector.