Some questions about Addressables.InstantiateAsync method

Unity 2018.4.6, Addressable 1.1.7

1. Addressables.InstantiateAsync() has a parameter called trackHandle, "If true, Addressables will track this request to allow it to be released via the result object.". What is the meaning of "released via result object"? From my understanding, result is an GameObject, and upon instantiate, it's an individual GameObject now. How does Addressable track it? And what if this parameter is false?
2. I have overall GameObject Recycle mechanism in our project, the instantiated gameobjects will be put under a "DontDestroyOnLoad" GameObject Transform before Scene Load. And this Addressables.InstantiateAsync result gameobject won't be "unloaded" during Scene change, right?

 

var handle = Addressables.InstantiateAsync(key, trackHandle=true/false);

1. Result object instantiated via Addressables.InstantiateAsync are managed by the system.

• If trackHandle=true, the handle object returned also get managed (in a result-to-handle dict.) When you call Addressables.ReleaseInstance(resultObject), the stored handle will be released as well.
• If trackHandle=false, you're responsible for release the handle object.

2. Result object instantiated via Addressables.InstantiateAsync will be released during scene changing. A lazy-man's memory management feature. But I'm not sure how it behaviour with DontDestroyOnLoad trick, you can test it. A *safe* way would be LoadAssetAsync, then GameObject.Instantiate to get unmanaged object.

 

Thanks for the reply, I still have the question about `trackHandle`, if trackHandle is false, should I manually release the handle? I mean, I instantiate an GameObject, assume it doesn't depend on any other assets, and itself is a "DontDestroyOnLoad", should I manually release the handle? Because the handle itself is a local variable and it's not managed in my code.

 

If trackHandle is false, you manage the handle yourself. And release the handle (instead of release the game object), when you want to destroy the instantiated game object. See details on https://docs.unity3d.com/Packages/com.unity.addressables@1.1/manual/MemoryManagement.html

If trackHandle is true, the system manages the handle, and it get released when with instantiated game object (via ReleaseInstance call, or changing scene).