UI 및 게임 오브젝트에서 클릭 / 터치 이벤트를 감지하는 방법

UI 및 게임 오브젝트에서 클릭 / 터치 이벤트를 감지하는 방법

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Android에서 Canvas on Touch의 UI 개체를 감지하는 방법은 무엇입니까?

예를 들어, 나는 다음과 같은 5 객체가 캔버스가 Image, RawImage, Buttons, InputField등을.

Button UI 개체를 터치하면 다음 작업을 수행합니다. 각 버튼을 클릭하면 다른 프로세스를 수행합니다.

코드는 다음과 같습니다.

private void Update()
{
    if (Input.touches.Length <= 0) return;

    for (int i = 0; i < Input.touchCount; i++)
    {
        if (Button1.touch)
            if (Input.GetTouch(i).phase == TouchPhase.Began)
                login();
        else if (Button2.touch && Input.GetTouch(i).phase == TouchPhase.Began)
            LogOut();
    }
}

그래서 어떻게할까요?

둘째 : Gameobject가 터치를 감지하는 방법은 무엇입니까? 위와 동일합니까?

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새 UI에 입력 API를 사용하지 않습니다. UI 이벤트를 구독하거나 이벤트에 따라 인터페이스를 구현합니다.

다음은 새 UI 구성 요소에서 이벤트를 감지하는 적절한 방법입니다.

1 . Image, RawImage및 Text구성 요소 :

필요한 인터페이스를 구현하고 해당 기능을 재정의합니다. 아래 예는 가장 많이 사용되는 이벤트를 구현합니다.

using UnityEngine.EventSystems;

public class ClickDetector : MonoBehaviour, IPointerDownHandler, IPointerClickHandler,
    IPointerUpHandler, IPointerExitHandler, IPointerEnterHandler,
    IBeginDragHandler, IDragHandler, IEndDragHandler
{
    public void OnBeginDrag(PointerEventData eventData)
    {
        Debug.Log("Drag Begin");
    }

    public void OnDrag(PointerEventData eventData)
    {
        Debug.Log("Dragging");
    }

    public void OnEndDrag(PointerEventData eventData)
    {
        Debug.Log("Drag Ended");
    }

    public void OnPointerClick(PointerEventData eventData)
    {
        Debug.Log("Clicked: " + eventData.pointerCurrentRaycast.gameObject.name);
    }

    public void OnPointerDown(PointerEventData eventData)
    {
        Debug.Log("Mouse Down: " + eventData.pointerCurrentRaycast.gameObject.name);
    }

    public void OnPointerEnter(PointerEventData eventData)
    {
        Debug.Log("Mouse Enter");
    }

    public void OnPointerExit(PointerEventData eventData)
    {
        Debug.Log("Mouse Exit");
    }

    public void OnPointerUp(PointerEventData eventData)
    {
        Debug.Log("Mouse Up");
    }
}

2 . Button구성 요소:

이벤트를 사용하여 버튼 클릭에 등록합니다.

public class ButtonClickDetector : MonoBehaviour
{
    public Button button1;
    public Button button2;
    public Button button3;

    void OnEnable()
    {
        //Register Button Events
        button1.onClick.AddListener(() => buttonCallBack(button1));
        button2.onClick.AddListener(() => buttonCallBack(button2));
        button3.onClick.AddListener(() => buttonCallBack(button3));

    }

    private void buttonCallBack(Button buttonPressed)
    {
        if (buttonPressed == button1)
        {
            //Your code for button 1
            Debug.Log("Clicked: " + button1.name);
        }

        if (buttonPressed == button2)
        {
            //Your code for button 2
            Debug.Log("Clicked: " + button2.name);
        }

        if (buttonPressed == button3)
        {
            //Your code for button 3
            Debug.Log("Clicked: " + button3.name);
        }
    }

    void OnDisable()
    {
        //Un-Register Button Events
        button1.onClick.RemoveAllListeners();
        button2.onClick.RemoveAllListeners();
        button3.onClick.RemoveAllListeners();
    }
}

버튼 클릭 이외의 것을 감지하는 경우 방법 1을 사용하십시오. 예를 들어, 버튼 클릭이 아닌 버튼 누름, 방법 1 IPointerDownHandler의 OnPointerDown기능을 사용하십시오 .

3 . InputField구성 요소:

이벤트를 사용하여 InputField 제출 등록을 등록합니다.

public InputField inputField;

void OnEnable()
{
    //Register InputField Events
    inputField.onEndEdit.AddListener(delegate { inputEndEdit(); });
    inputField.onValueChanged.AddListener(delegate { inputValueChanged(); });
}

//Called when Input is submitted
private void inputEndEdit()
{
    Debug.Log("Input Submitted");
}

//Called when Input changes
private void inputValueChanged()
{
    Debug.Log("Input Changed");
}

void OnDisable()
{
    //Un-Register InputField Events
    inputField.onEndEdit.RemoveAllListeners();
    inputField.onValueChanged.RemoveAllListeners();
}

4 . Slider구성 요소:

드래그하는 동안 슬라이더 값이 변경되는시기를 감지하려면 :

public Slider slider;

void OnEnable()
{
    //Subscribe to the Slider Click event
    slider.onValueChanged.AddListener(delegate { sliderCallBack(slider.value); });
}

//Will be called when Slider changes
void sliderCallBack(float value)
{
    Debug.Log("Slider Changed: " + value);
}

void OnDisable()
{
    //Un-Subscribe To Slider Event
    slider.onValueChanged.RemoveListener(delegate { sliderCallBack(slider.value); });
}

다른 이벤트의 경우 방법 1을 사용하십시오 .

5 . Dropdown구성 요소

public Dropdown dropdown;
void OnEnable()
{
    //Register to onValueChanged Events

    //Callback with parameter
    dropdown.onValueChanged.AddListener(delegate { callBack(); });

    //Callback without parameter
    dropdown.onValueChanged.AddListener(callBackWithParameter);
}

void OnDisable()
{
    //Un-Register from onValueChanged Events
    dropdown.onValueChanged.RemoveAllListeners();
}

void callBack()
{

}

void callBackWithParameter(int value)
{

}

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UI가 아닌 개체 :

6. 3D 개체 (메시 렌더러 / 모든 3D 충돌체)

PhysicsRaycaster카메라에 추가 한 다음 방법 1의 이벤트 를 사용합니다 .

The code below will automatically add PhysicsRaycaster to the main Camera.

public class MeshDetector : MonoBehaviour, IPointerDownHandler
{
    void Start()
    {
        addPhysicsRaycaster();
    }

    void addPhysicsRaycaster()
    {
        PhysicsRaycaster physicsRaycaster = GameObject.FindObjectOfType<PhysicsRaycaster>();
        if (physicsRaycaster == null)
        {
            Camera.main.gameObject.AddComponent<PhysicsRaycaster>();
        }
    }

    public void OnPointerDown(PointerEventData eventData)
    {
        Debug.Log("Clicked: " + eventData.pointerCurrentRaycast.gameObject.name);
    }

    //Implement Other Events from Method 1
}

7.For 2D Object (Sprite Renderer/any 2D Collider)

Add Physics2DRaycaster to the Camera then use any of the events from Method 1.

The code below will automatically add Physics2DRaycaster to the main Camera.

public class SpriteDetector : MonoBehaviour, IPointerDownHandler
{
    void Start()
    {
        addPhysics2DRaycaster();
    }

    void addPhysics2DRaycaster()
    {
        Physics2DRaycaster physicsRaycaster = GameObject.FindObjectOfType<Physics2DRaycaster>();
        if (physicsRaycaster == null)
        {
            Camera.main.gameObject.AddComponent<Physics2DRaycaster>();
        }
    }

    public void OnPointerDown(PointerEventData eventData)
    {
        Debug.Log("Clicked: " + eventData.pointerCurrentRaycast.gameObject.name);
    }

    //Implement Other Events from Method 1
}

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Troubleshooting the EventSystem:

No clicks detected on UI, 2D Objects (Sprite Renderer/any 2D Collider) and 3D Objects (Mesh Renderer/any 3D Collider):

A.Check that you have EventSystem. Without EventSystem it can't detect clicks at-all. If you don't have have it, create it yourself.

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Go to GameObject ---> UI ---> Event System. This will create an EventSystem if it doesn't exist yet. If it already exist, Unity will just ignore it.

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B.The UI component or GameObject with the UI component must be under a Canvas. It means that a Canvas must be the parent of the UI component. Without this, EventSystem will not function and clicks will not be detected.

This only applies to UI Objects. It doesn't apply to 2D (Sprite Renderer/any 2D Collider) or 3D Objects (Mesh Renderer/any 3D Collider).

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C.If this is a 3D Object, PhysicsRaycaster is not attached to the camera. Make sure that PhysicsRaycaster is attached to the camera. See #6 above for more information.

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D.If this is a 2D Object, Physics2DRaycaster is not attached to the camera. Make sure that Physics2DRaycaster is attached to the camera. See #7 above for more information.

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E.If this is a UI object you want to detect clicks on with the interface functions such as OnBeginDrag, OnPointerClick, OnPointerEnter and other functions mentioned in #1 then the script with the detection code must be attached to that UI Object you want to detect click on.

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F.Also, if this is a UI Object you want to detect clicks on, make sure that no other UI Object is in front of it. If there is another UI in front of the one you want to detect click on, it will be blocking that click.

To verify that this is not the issue, disable every object under the Canvas except the one you want to detect click on then see if clicking it works.

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You can add an EventTrigger Componenet to Your UI elements that already have these Events you just have to pass method/Function on specific event.

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You could use OnMouseDown as well. OnMouseDown is called when the user has pressed the mouse button while over the GUIElement or Collider. This event is sent to all scripts of the Collider or GUIElement.

using UnityEngine;
using System.Collections;
using UnityEngine.SceneManagement; // The new load level needs this

public class ExampleClass : MonoBehaviour
{
    void OnMouseDown()
    {
        // Edit:
        // Application.LoadLevel("SomeLevel");
        // Application.LoadLevel() is depreciating but still works

         SceneManager.LoadScene("SomeLevel"); // The new way to load levels

    }
}

ReferenceURL : https://stackoverflow.com/questions/41391708/how-to-detect-click-touch-events-on-ui-and-gameobjects