无法重新创建子游戏对象统一 c#

Question

There is a ScrollView with child buttons and Text objects which are dynamically created by the script. For the first time, the buttons and text are created normally, but when you try to destroy the ScrollView, and add buttons and text to it, they are not created again.

if (GameObject.Find("ScrollViewUsers") != null)
    {
        Destroy(GameObject.Find("ScrollViewUsers"));
    }

    GameObject scrollView = Instantiate(GameObject.Find("ScrollViewUsersSample"), GameObject.Find("PanelFindFriends").transform, true);
    scrollView.name = "ScrollViewUsers";
    scrollView.GetComponent<RectTransform>().localPosition = new Vector3(0, -20, 0);
    scrollView.GetComponent<RectTransform>().sizeDelta = new Vector2(GameObject.Find("PanelFindFriends").GetComponent<RectTransform>().sizeDelta.x, GameObject.Find("PanelFindFriends").GetComponent<RectTransform>().sizeDelta.y - 40);
    scrollView.transform.Find("Viewport/ContentUsersSample").name = "ContentUsers";

    Debug.Log("userList.Count=" + userList.Count);
    float _y = 0;
    foreach (KeyValuePair<int, string> user in userList)
    {
        Debug.Log("user=" + user.Value);
        Instantiate(GameObject.Find("TextUser"), GameObject.Find("ContentUsers").transform, true);
        GameObject.Find("TextUser(Clone)").name = "user_" + user.Value;
        GameObject.Find("user_" + user.Value).GetComponent<Text>().text = user.Value;
        GameObject.Find("user_" + user.Value).GetComponent<RectTransform>().localPosition = new Vector3(-25, y, 0);

        Instantiate(GameObject.Find("ButtonAddUser"), GameObject.Find("ContentUsers").transform, true);
        GameObject.Find("ButtonAddUser(Clone)").name = "addUser_" + user.Value;
        GameObject.Find("addUser_" + user.Value).GetComponent<RectTransform>().localPosition = new Vector3(62, y, 0);
        y -= 40;

        _y += (GameObject.Find("user_" + user.Value).GetComponent<RectTransform>().sizeDelta.y + 20);
}

Answer 1

Here is an example of your required

List<string> userList = new List<string> { "User1", "User2", "User3" };

[SerializeField]
private Text TextUserPrefabRef;

[SerializeField]
private Button ButtonAddUserPrefabRef;

[SerializeField]
private GameObject ScrollViewUsersSamplePrefabRef;

[SerializeField]
private Transform PanelFindFriendsRef;

private Transform ContentUsers;

public void CreateNew () 
{
    if (GameObject.Find("ScrollViewUsers") != null)
    {
        Debug.Log("Destroying");
        Destroy(GameObject.Find("ScrollViewUsers"));
    }

    GameObject scrollView = Instantiate(ScrollViewUsersSamplePrefabRef, PanelFindFriendsRef);
    scrollView.name = "ScrollViewUsers";

    ContentUsers = scrollView.transform.Find("Viewport/ContentUsersSample");
    ContentUsers.name = "ContentUsers";

    foreach (string user in userList)
    {
        Debug.Log("user=" + user);
        GameObject newTextUser = Instantiate (TextUserPrefabRef.gameObject, ContentUsers) as GameObject;
        newTextUser.GetComponent<Text>().text = user;

        GameObject newButton = Instantiate (ButtonAddUserPrefabRef.gameObject, ContentUsers);
        newButton.name = "addUser_" + user;
    }   
}

Then make prefabs of your scrollView, AddUserButton and Text Objects And assign them in inspector.

Answer 2

In the foreach loop, Create a new variable instead of the GameObject.Find().

eg:

var go = Instantiate(GameObject.Find("TextUser"), GameObject.Find("ContentUsers").transform, true);)
go.name = "...";
go.GetComponent<Text>().text = "...";