The type name 'ReadOnly' does not exist in the type 'NativeArray<T>

[longzuyan]

Hi,

OS version: Windows 10
Unity version: Unity 2019.4.40f1

when I added package from disk，below error is getting：
Library\PackageCache\[email protected]\Unity.Collections\NativeList.cs(716,31): error CS0426: The type name 'ReadOnly' does not exist in the type 'NativeArray<T>'

[BoysFight]

+1. Have you solved the problem?

[hir-yk]

@longzuyan
Have you solved this problem? Now I facing same problem. if you solved, could you tell me how to solve it.
thank you.

[longzuyan]

@longzuyan Have you solved this problem? Now I facing same problem. if you solved, could you tell me how to solve it. thank you.

I haven't solved this problem yet.

[climb0081]

+1 me too

[LadissonLai]

i have solved this problem by change the git branch to lanelet2. enjoy!!!

[Acoustic6]

NativeArray is a struct which has ReadOnly property added only in 2022 Unity versions. So you need to upgrade your Unity.
In collections collections 0.15.0-preview.21 package.json file there unity version is specified like "unity": "2020.1".

I handled this issue installing 0.9.0-preview.6 collections verions for 2019.3 Unity version but new error appear corresponding to NativeParallelMultiHashMap.
So I installed collections 2.1.0-exp.4 version and Unity 2022.2.