How do you change pressed sprite (C#)

Question

On a unity UI Button there is an option called "Pressed Sprite" and this is the sprite which is displayed when you are clicking on the button. I'd like to be able to change the "Pressed Sprite" sprite in code.

Here's an example of what I've tried

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

 void Awake () 
 {
     button = this.gameObject.GetComponent<Button>();
 }

 public void SetSprite()
 {
     if (enabled) {
         button.spriteState.pressedSprite = redSprite;
     } else {
         button.spriteState.pressedSprite = greenSprite;
     }

I also tried setting up a temp variable such as button = tempButton; and that was the same

I tend to get the following errors:

 error CS0029: Cannot implicitly convert type `UnityEngine.Sprite' to `UnityEngine.UI.SpriteState'

 error CS1612: Cannot modify a value type return value of `UnityEngine.UI.Selectable.spriteState'. Consider storing the value in a temporary variable

Answer 1

Best Answer

Answer by TBruce · Jun 07, 2016 at 06:30 PM

Coding is not necessary. Do this

Change the button Transition to Sprite Swap
Set the Pressed Sprite to the desired sprite
You can also set Highlighted Sprite and Disabled Sprite
Your good to go

Is this what you are trying to achieve?

alt text

inspector.png (20.4 kB)

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guitarninja · Jun 07, 2016 at 06:52 PM 0

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Above works however I need the Pressed Sprite to actually change to a different Pressed Sprite during run-time.

TBruce guitarninja · Jun 07, 2016 at 07:00 PM 0

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What do you mean a different Pressed Sprite? The Sprite Image and the Pressed Sprite must be different for this to work so when you press the button the Sprite Image is swapped out with the Pressed Sprite and the button will show the Pressed Sprite as long as the button is held down. Then when the button is released the original Sprite Image is swapped back in.

guitarninja TBruce · Jun 07, 2016 at 07:14 PM 0

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I'd like to be able to swap the sprite during run-time. Just like you might want to change the "Source Image" sprite on the "Image" component

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guitarninja · Jun 07, 2016 at 08:09 PM 1

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PERFECT! I've seen this question a few times but with no actual answers.

I think I kept tripping over the syntax for this but the below part has allowed me to get it working

              SpriteState spriteState = new SpriteState();
              spriteState = button.spriteState;
              if (enabled)
              {
                  spriteState.pressedSprite = redSprite;
              }
              else
              {
                  spriteState.pressedSprite = greenSprite;
              }
              button.spriteState = spriteState;

TBruce guitarninja · Jun 07, 2016 at 08:45 PM 1

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Thank you. I am glad I could help. I hope that your project is a success.

$$anonymous$$ · Jul 29, 2016 at 09:00 AM 0

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Such a wonderful answer

How do you change pressed sprite (C#)

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