Unity Issue Tracker - Enum, Long, Double, Decimal, byte, or char values are not available when used in Events

Postponed means that the issue was either a feature request or something that requires major refactoring on our side. Since that makes the issue not actionable in the close future we choose to close it as Postponed and add it on our internal roadmaps and technical debt pages instead.

Postponed

Votes

0

Found in

2019.4

2020.3

2020.3.0f1

2021.2

2022.1

2022.2

Issue ID

1394546

Regression

No

Enum, Long, Double, Decimal, byte, or char values are not available when used in Events

uGUI

-

Jan 12, 2022

How to reproduce:
1. Open the user's attached project
2. Open scene Scenes/SampleScene
3. In the Hierarchy window, select "GameObject"
4. In the Inspector window, under the Test Activator (Script) component, change the TestReciever.RecieveInt method by selecting the field
5. Observe the available methods under TestReciever

Expected result: RecieveLong, RecieveDouble, RecieveDecimal, RecieveByte, RecieveChar, RecieveEnum methods are available
Actual result: only the RecieveInt method is available

Reproducible with: 2019.4.36f1, 2020.3.30f1, 2021.2.15f1, 2022.1.0b11, 2022.2.0a7

Resolution Note:

These use cases are known and are planned for the future.

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Comments (1)

unity_vhwR5LxKQZuFcg

Mar 02, 2022 15:05

The underlying reason is because the UnityEventBase internal method

internal MethodInfo FindMethod(string name, object listener, PersistentListenerMode mode, Type argumentType)

only validates listener method parameter types that match those found in the enum PersistentListenerMode:
void, Object, int, float, string, and bool.

Doubles, decimals, bytes, chars, and enums match none of those.

There are also several "register" methods (eg RegisterBoolPersistentListener) that match the allowed types.

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