SceneManager.sceneUnloaded not working

Unity Engine
1

Hi all

I need to detect when a scene is unloaded in order to save player data.
However, It’s not always working as expected.

Here is my code

private void OnEnable()
{
    SceneManager.sceneUnloaded += OnLevelFinished;
}

private void OnDestroy()
{
    SceneManager.sceneUnloaded -= OnLevelFinished;
}

private void OnLevelFinished(Scene scene)
{
    print("Save player data");
}

The method OnLevelFinished is called only if I comment the method OnDestroy. The same problem occurs when I replace OnDestroy() with OnDisable(). However, it is important to unsubscribe to SceneManager.sceneUnloaded.

I’m using Unity 2017.3.0f3.

Brett

2

That happens because the object that is listening to the sceneUnloaded is being destroyed when the scene is unloaded. You can move the unsubscribe to the OnLevelFinished.

private void OnEnable()
{
    SceneManager.sceneUnloaded += OnLevelFinished;
}
private void OnLevelFinished(Scene scene)
{
    print("Save player data");
    SceneManager.sceneUnloaded -= OnLevelFinished;
}
2 Likes
3

Thank you, it’s working as expected.