EditorPrefs Silently fail to work when called from a server response call back.

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1

Hi,

I have a server response in some editor code, on the response i save some strings to editor prefs. However, this fails silently. I know this works when calling it directly and i know that the code call “EditorPrefs.SetString” is being called.

Is this a bug or am I not understanding EditorPrefs.

Thanks.

2

Pretty much non of the Unity or UnityEditor API is thread-safe. Most API methods will actually throw an exception if used from a different thread than the main thread. Exceptions thrown inside your own threads are not necessarily caught by Unity. EditorPrefs.SetString does have a thread protection and will throw an exception like this:

UnityException: SetString_Internal can
only be called from the main thread.
Constructors and field initializers
will be executed from the loading
thread when loading a scene. Don’t use
this function in the constructor or
field initializers, instead move
initialization code to the Awake or
Start function.
UnityEditor.EditorPrefs.SetString

If your callback is actually executed from a different thread, it’s possible that the calling code in that thread will silently swallow the exception.

If your “server response” is not invoked on a seperate thread, you should be more specific. Because some “editor code” and “a server response” could mean almost anything.