Unity toggle sprite swap for on-off sprites
Unity default toggle component doesn’t have ability to just toggle two images for on/off state.
So here my simple component to do this. It is based on Unity.UI.Button.
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using System; using UnityEngine; using UnityEngine.UI; [RequireComponent(typeof(Button))] public class ToggleSpriteSwap: MonoBehaviour { [SerializeField] private Image targetImage; [SerializeField] private Sprite onSprite; [SerializeField] private Sprite offSprite; [SerializeField] private bool isOn; public bool IsOn { get { return isOn; } set { isOn = value; UpdateValue(); }} public event Action<bool> onValueChanged; private Button button; // to set initial value and skip onValueChanged notification public void Initialize(bool value) { isOn = value; UpdateValue(false); } // Use this for initialization void Start () { button = GetComponent<Button>(); button.transition = Selectable.Transition.None; button.onClick.AddListener(OnClick); } void OnClick() { isOn = !isOn; UpdateValue(); } private void UpdateValue(bool notifySubscribers = true) { if(notifySubscribers && onValueChanged != null) onValueChanged(isOn); if (targetImage == null) return; targetImage.sprite = isOn ? onSprite : offSprite; } } |
Feel free to use it, credits will be nice, but not crucial for this simple peace of code.
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