How to enable and disable raw image on ui system

Question

Hello everyone, I have made a canvas with a raw image at the top right corner. My image is a key, what i want to do is when i pick up the real key, in my main game, to show up the picture at the corner and when i use the key to unlock a door for example the image to be disabled from the corner so i cant see it.

I have a picture that shows the canvas at the top and the main game at the bottom. So as u can see i dont want the image to be shown at the start of the game but when u pick up the key alt text

Here is my key control code which is a simple counter to know if i got the key or not and with o collider so the player can destroy it:

using UnityEngine; using System.Collections; using UnityEngine.UI;

public class KeyController : MonoBehaviour {

 public GameObject keygot;
  
  
  
 void Start(){
  
 }
  
 void OnTriggerEnter(Collider collider){
 if (collider.gameObject.name == "Player"){
 PublicVariables.KeyCount+=1;
  
  
  
 Destroy (gameObject);
 }
 }

}

Answer 1

Answer by Flazone · Feb 20, 2015 at 01:31 PM

Hi,

In your KeyControler code, try to declare a public variable who take the image of your Canvas.

 public Image keyImage;

alt text

Make a code who enable this image when you pickup the key and disable it when you use it.

 keyImage.enabled = true;

or

 keyImage.enabled = false;

This is just a proposition, I think there is many ways to do that. :)

key.png (1.3 kB)

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kostasandre · Feb 23, 2015 at 12:59 PM 0

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Hi, Thanks for your answer, i have already tried that before but i cant drag and drop the image on the canvas when i make a bublic image.I can only drag the picture if my public variable is a gameobject and if i do that the enable and disable command wont work. :(

Flazone · Feb 23, 2015 at 05:51 PM 0

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Hi,

You need to use the UI 4.6 Image component :

alt text

GameObject -> UI -> Image

I made a little script that makes disappear an image if you press E

 using UnityEngine;
 using UnityEngine.UI;
 using System.Collections;
 
 public class test : MonoBehaviour {
     
     public Image testImage;
 
     // Use this for initialization
     void Start () {
     
     }
     
     // Update is called once per frame
     void Update () {
 
         if (Input.GetKey(KeyCode.E)){
             testImage.enabled = false;
         }
 
     }
 }

You just need to drag/drop your image on the public variable in the inspector. It works for me !

image.png (10.1 kB)

Answer 2

Answer by kostasandre · Feb 24, 2015 at 12:17 PM

Ok i found the solution finaly..!! :D When i uploaded the pictures they are set at texture type as textures...i changed that to sprite 2D and everything works fine now.. :D Thanks for ur time.

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Flazone · Feb 24, 2015 at 04:19 PM 0

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Oh well! Sorry I didn't think about that..

Good luck for the rest!

Answer 3

Answer by kostasandre · Feb 24, 2015 at 12:17 PM

Hello again and thanks for your time. As u said i made GameObject ->UI ->Image and followed ur instructions my problem again is that for a reason i cant drag and drop my image if my variable is public Image ,i can only do that if i set it as public GameObject.

alt text

i followed what u said and smth i am missing and cant find what is it.. :( From my assets im trying to drag and drop the key2 picture to the key Image inspector which is set as public image KeyImage.

*When i first created gameObject->UI->RawImage i could drag and drop it right on the canvas at my scene as the first post ive made,now i cant either do that.

στιγμιοτυπο-οθονης-4.png (498.0 kB)

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How to enable and disable raw image on ui system

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