Where do I get UI Builder?

I'm in the process of updating my game from 2018 -> 2019.3. I've run into a lot of issues but have been able to fix most of them. I'm having a lot of trouble with the UI now though.

Before I had:

Code (CSharp):

1.  
2.     public Button MoveButton;
3.     public Button AttackButton;
4.     public Button WaitButton;
5.  
6.     private void Start()
7.     {
8.         MoveButton.onClick.AddListener(OnMove);
9.         AttackButton.onClick.AddListener(OnAttack);
10.         WaitButton.onClick.AddListener(OnWait);
11.  
12.     }

Now I lost the references I had set in the Inspector to each Button. Instead I thought I could change it to a GameObject and in Start I could call

MoveButton = MoveButtonObj.GetComponent<Button>()

When I do that though and click play I get an error that `ArgumentException: GetComponent requires that the requested component 'Button' derives from MonoBehaviour or Component or is an interface.`

I've also had an issue where before for my hp bar I would set the image.fillAmount, but it appears that a UIElement.Image no longer has a .fillAmount on it, and I've searched through the docs but have not been able to find anything. I can still see Fill Amount in the inspector, but am unsure on how to reach it through code.

I thought maybe I could just not use the new UIElement system, but it doesn't seem like I can use the old system anymore. I still have the Unity UI and TextMeshPro packages installed via Package Manager, but I'm unable to import and use them. The only one that will actually show up is Unity.UIElements, and I'm struggling.

Would appreciate any help resolving these issues, or figuring out how I can just build my UI using the new UI Element system instead. I do not see UI Builder in the package manager, and I can't find it anywhere inside of the editor.

 

If you have

using UnityEngine.UI;

it should work. Button will be the UnityEngine.UIElements one.

Or you can just change them to

public UnityEngine.UI.Button MoveButton;

, etc.

 

UIBuilder is still a preview package. So in package manager you have to select Advanced>Show preview packages also.
That won't solve your issues though, because it's not for runtime yet, only for editor. And it's a completely different UI system.
So stick to UGUI for now.

 

Thanks! For some reason UnityEngine.UI and TMPro didn't exist as namespaces. I deleted my library and Assembly-Csharp, removed the packages, restarted and readded them and it fixed everything haha they exist now. Fun times!

 

i love u