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CloseUnityEvent that is triggered when the Button is pressed.
Use UnityEvent.AddListener to extend the onClick click events. The added UnityAction is called when the Button press is released. A Button can have multiple listeners. As an example, in the script example below, btn3 can have TaskOnClick added as a second listener call.
Note that EventType.MouseDown and EventType.MouseUp are called prior to onClick.
#pragma strict // To use this example, attach this script to an empty GameObject. // Create three buttons (Create>UI>Button). Next, select your // empty GameObject in the Hierarchy and click and drag each of your // Buttons from the Hierarchy to the Your First Button, Your Second Button // and Your Third Button fields in the Inspector. // Click each Button in Play Mode to output their message to the console. // Note that click means press down and then release. public class Example extends MonoBehaviour { public var m_YourFirstButtonm_YourSecondButtonm_YourThirdButton: Button; function Start() { //Calls the TaskOnClick/TaskWithParameters/ButtonClicked method when you click the Button m_YourFirstButton.onClick.AddListener(TaskOnClick); m_YourSecondButton.onClick.AddListener(function() { TaskWithParameters("Hello"); }); m_YourThirdButton.onClick.AddListener(function() { return ButtonClicked(42); }); m_YourThirdButton.onClick.AddListener(TaskOnClick); } function TaskOnClick() { //Output this to console when Button1 or Button3 is clicked Debug.Log("You have clicked the button!"); } function TaskWithParameters(message: String) { //Output this to console when the Button2 is clicked Debug.Log(message); } function ButtonClicked(buttonNo: int) { //Output this to console when the Button3 is clicked Debug.Log("Button clicked = " + buttonNo); } }
// To use this example, attach this script to an empty GameObject. // Create three buttons (Create>UI>Button). Next, select your // empty GameObject in the Hierarchy and click and drag each of your // Buttons from the Hierarchy to the Your First Button, Your Second Button // and Your Third Button fields in the Inspector. // Click each Button in Play Mode to output their message to the console. // Note that click means press down and then release.
using UnityEngine; using UnityEngine.UI;
public class Example : MonoBehaviour { //Make sure to attach these Buttons in the Inspector public Button m_YourFirstButton, m_YourSecondButton, m_YourThirdButton;
void Start() { //Calls the TaskOnClick/TaskWithParameters/ButtonClicked method when you click the Button m_YourFirstButton.onClick.AddListener(TaskOnClick); m_YourSecondButton.onClick.AddListener(delegate {TaskWithParameters("Hello"); }); m_YourThirdButton.onClick.AddListener(() => ButtonClicked(42)); m_YourThirdButton.onClick.AddListener(TaskOnClick); }
void TaskOnClick() { //Output this to console when Button1 or Button3 is clicked Debug.Log("You have clicked the button!"); }
void TaskWithParameters(string message) { //Output this to console when the Button2 is clicked Debug.Log(message); }
void ButtonClicked(int buttonNo) { //Output this to console when the Button3 is clicked Debug.Log("Button clicked = " + buttonNo); } }