GUITexture adn GUIText are obsolete - Standard Assets,GUITexture and GUIText are obsolete

@Athullya I WAS (this is an update I just fixed it!!) having the exact same problem. When I was opening up those files - SimpleActivatorMenu.cs and ForcedReset.cs, and making the suggested changes of GUITexture to UI.Texture and GUIText to UI.Text i was getting the following errors

• Exception thrown while invoking [OnOpenAssetAttribute] method 'Unity.CodeEditor.CodeEditor:OnOpenAsset (int,int,int)' : InvalidOperationException: Cannot start process because a file name has not been provided.

• InvalidOperationException: Cannot start process because a file name has not been provided.

• Assets/Standard Assets/Utility/SimpleActivatorMenu.cs(10,16): error CS0246: The type or namespace name 'UI' could not be found (are you missing a using directive or an assembly reference?)

• Assets/Standard Assets/Utility/ForcedReset.cs(6,27): error CS0246: The type or namespace name 'UI' could not be found (are you missing a using directive or an assembly reference?)

  ---

• then I found this post! - https://answers.unity.com/questions/1087908/the-type-or-namespace-ui-could-not-be-found-trying.html

  ---

-- so here is my solution

• in both SimpleActivatorMenu.cs and ForcedReset.cs paste the following at the top "using UnityEngine.UI;"

• where the originally suggested changes from GUITexture to UI.Texture and GUIText to UI.Text, I just removed the UI, as in the post link above!

now my game mode will play!!!

     //ForcedReset.cs
 
     using System;
     using UnityEngine;
     using UnityEngine.SceneManagement;
     using UnityStandardAssets.CrossPlatformInput;
     using UnityEngine.UI;
     //change GUITexture to Image
     [RequireComponent(typeof (Image))]
     
     public class ForcedReset : MonoBehaviour
     {
         private void Update()
         {
             // if we have forced a reset ...
             if (CrossPlatformInputManager.GetButtonDown("ResetObject"))
             {
                 //... reload the scene
                 SceneManager.LoadScene(SceneManager.GetSceneAt(0).name);
             }
         }
     }
 
 
 //////////////////////////////////
 //SimpleActivatorMenu.cs
 
 using System;
 using UnityEngine;
 using UnityEngine.UI;
 
 namespace UnityStandardAssets.Utility
 {
     public class SimpleActivatorMenu : MonoBehaviour
     {
 //// change GUIText to TEXT
         public Text camSwitchButton;
         
         
         public GameObject[] objects;
 
 
         private int m_CurrentActiveObject;
 
 
         private void OnEnable()
         {
             // active object starts from first in array
             m_CurrentActiveObject = 0;
             camSwitchButton.text = objects[m_CurrentActiveObject].name;
         }
 
 
         public void NextCamera()
         {
             int nextactiveobject = m_CurrentActiveObject + 1 >= objects.Length ? 0 : m_CurrentActiveObject + 1;
 
             for (int i = 0; i < objects.Length; i++)
             {
                 objects[i].SetActive(i == nextactiveobject);
             }
 
             m_CurrentActiveObject = nextactiveobject;
             camSwitchButton.text = objects[m_CurrentActiveObject].name;
         }
     }
 }

Search for SimpleActivatorMenu.cs

And change the code to this below.

I had this error today.

I added:

 using UnityEngine.UI;

and then changed:

public GUIText camSwitchButton;

to:

  public Text camSwitchButton;

@Athullya I had this same problem. I tried copying and pasting from the comment by @ktduffyinc_unity but it just threw me more warnings and the errors stayed. I just ended up deleting them. When I clicked "play", Unity re-downloaded those assets again and it works fine now.

For users looking for the answer:

Add

 using UnityEngine.UI;
 using UnityEngine.UIElements;

to the the top of the script then change:

GUITexture to UI.Texture and GUIText to UI.Text

So, if you have something like:

 [RequireComponent(typeof (GUITexture))] 

change it to

 [RequireComponent(typeof(UnityEngine.UI.Image))]

This really help.

So my question is how about these:

Image guiTex = gameObject.GetComponent();

         if (guiTex == null)
         {
             gameObject.transform.position = Vector3.zero;
             gameObject.transform.localScale = new Vector3(100, 100, 100);

             Image texture = gameObject.AddComponent<Image>();


             texture.enabled = false;
     
             texture.texture = new Texture2D(1, 1);
             texture.pixelInset = new Rect(0f, 0f, Screen.width, Screen.height);
             texture.color = Color.clear;
         }
     }

What should i change in order as solution to 1. GUITexture.pixelInset and 2. GUITexture.texture

Thanks