NullReferenceException when making a requests regarding user data

Question

question

voxelentmt asked Jan 14, '21

NullReferenceException when making a requests regarding user data

Making the following requests generates a null reference exception in the Playfab code:

string gender = "somevalue";
string birthday = "somevalue";
var req = new UpdateUserDataRequest
        {
            Data =
            {
                { "gender", gender },
                { "birthday", birthday }
            }
        };
        PlayFabClientAPI.UpdateUserData(req, OnUserDataUpdated, OnRegisterFailure);

And trying to fetch the data (after logging in) also generates an error:

PlayFabClientAPI.GetUserData(new GetUserDataRequest
        {
            Keys = {
                "gender",
                "birthday"
            }
        }, OnGetUserData, OnPlayfabError);

Error:

NullReferenceException: Object reference not set to an instance of an object
MapUI.OnGetAccountInfo (PlayFab.ClientModels.GetAccountInfoResult result) (at Assets/UI/Scripts/MapUI.cs:135)
PlayFab.Internal.PlayFabHttp+<>c__DisplayClass23_0`1[TResult].<_MakeApiCall>b__1 () (at Assets/PlayFabSDK/Shared/Internal/PlayFabHttp/PlayFabHTTP.cs:215)
PlayFab.Internal.PlayFabUnityHttp.OnResponse (System.String response, PlayFab.Internal.CallRequestContainer reqContainer) (at Assets/PlayFabSDK/Shared/Internal/PlayFabHttp/PlayFabUnityHttp.cs:247)
UnityEngine.Debug:LogException(Exception)
PlayFab.Internal.PlayFabUnityHttp:OnResponse(String, CallRequestContainer) (at Assets/PlayFabSDK/Shared/Internal/PlayFabHttp/PlayFabUnityHttp.cs:251)
PlayFab.Internal.<Post>d__12:MoveNext() (at Assets/PlayFabSDK/Shared/Internal/PlayFabHttp/PlayFabUnityHttp.cs:198)
UnityEngine.SetupCoroutine:InvokeMoveNext(IEnumerator, IntPtr) (at /Users/builduser/buildslave/unity/build/Runtime/Export/Scripting/Coroutines.cs:17)

I am using Unity 2019.4.0f1 and the latest version of the Playfab SDK (2.102.210111).

Other requests seem to work except for these two regarding user data.

Player Data unity3d data

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Answer 1 · 2021-01-14T06:22:30Z

Citrus Yan answered Jan 14, '21

From the error stack I can see that NullReferenceException happens at:

MapUI.OnGetAccountInfo (PlayFab.ClientModels.GetAccountInfoResult result) (at Assets/UI/Scripts/MapUI.cs:135)

which is not related to the code you provided.

Could you please share the code snippet of "MapUI.OnGetAccountInfo" ?

3

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voxelentmt commented · Jan 14, 2021 at 08:28 AM

The line 135 is the function call of the request, my code looks like this:

// line 130
private void OnGetAccountInfo(GetAccountInfoResult result)
    {
        string username = result.AccountInfo.Username;
        usernameText.SetText(username);

	// line 135
        PlayFabClientAPI.GetUserData(new GetUserDataRequest
        {
            Keys = {
                "gender",
                "birthday"
            }
        }, OnGetUserData, OnPlayfabError);
    }

0 ·

Citrus Yan voxelentmt commented · Jan 14, 2021 at 09:37 AM

The "Keys" field is a list of strings:

List<string>

Please use the following statement to initialize it:

Keys = new List<string> { "gender", "birthday" }

0 ·

voxelentmt Citrus Yan commented · Jan 14, 2021 at 09:53 AM

That fixed it.. Weird that it compiled if it was wrong

0 ·

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