我剛剛開始了一些基本游戲內容的統一項目。這可能是錯誤的問題或無效的過程。我已經在單擊按鈕時隱藏/顯示面板，現在我想在下拉列表的值更改后隱藏/顯示。我有兩個面板，一個用于基本信息，另一個用于安全信息。在選擇下拉值后，我想顯示其中一個面板并隱藏第二個面板。但我不知道如何實現這一目標。我正在嘗試一些基本邏輯并堅持下去。我做了什么：using UnityEngine;using UnityEngine.UI;using UnityEngine.Events;using System.Collections;public class WithrowModalPanel : MonoBehaviour{ public Button cancelButton; public GameObject modalPanelObject; public GameObject modalPanelObjectAdvance; public Dropdown myDropdown; private static WithrowModalPanel modalPanel; public static WithrowModalPanel Instance() { if (!modalPanel) { modalPanel = FindObjectOfType(typeof(WithrowModalPanel)) as WithrowModalPanel; if (!modalPanel) Debug.LogError("There needs to be one active ModalPanel script on a GameObject in your scene."); } return modalPanel; } void Update() { switch (myDropdown.value) { case 1: Debug.Log("Basic panel!"); modalPanelObject.SetActive(true); modalPanelObjectAdvance.SetActive(false); break; case 2: Debug.Log("Advance panel!"); modalPanelObjectAdvance.SetActive(true); modalPanelObject.SetActive(false); break; } }}我只是盯著 unity 看，對它的結構并沒有太多的了解。
1 回答
當年話下
TA貢獻1890條經驗 獲得超9個贊
請注意，這Dropdown.value是 0 基索引，因此第一個條目0不是1. 我不知道您的完整設置，但我想這是您嘗試的主要問題。
然后 Dropdowns 有一個事件onValueChanged而不是在Update你應該注冊一個監聽器
private void Start()
{
// Just to be sure it is always only added once
// I have the habit to remove before adding a listener
// This is valid even if the listener was not added yet
myDropdown.onValueChanged.RemoveListener(HandleValueChanged);
myDropdown.onValueChanged.AddListener(HandleValueChanged);
}
private void OnDestroy()
{
// To avoid errors also remove listeners as soon as they
// are not needed anymore
// Otherwise in the case this object is destroyed but the dropdown is not
// it would still try to call your listener -> Exception
myDropdown.onValueChanged.RemoveListener(HandleValueChanged);
}
private void HandleValueChanged(int newValue)
{
switch (newValue)
{
case 0:
Debug.Log("Basic panel!");
modalPanelObject.SetActive(true);
modalPanelObjectAdvance.SetActive(false);
break;
case 1:
Debug.Log("Advance panel!");
modalPanelObjectAdvance.SetActive(true);
modalPanelObject.SetActive(false);
break;
}
}
提示：你可以使用通用的FindObjectOfType
modalPanel = FindObjectOfType<WithrowModalPanel>();
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