Add List<string> to Scrollview.Content?

Unity Engine
1

I’m trying to loop through a list and add the values to a scroll view content as a text object. Here is my code but not working currently/not finished. Not sure how to add objects to the scrollview.content.

public GameObject _Content;

    private Text _Text;
    private List<string> lst = new List<string>();

    // Use this for initialization
    void Start ()
    {
        //Logged In Redirect
        //if (!User_Data._Logged_In)
        //{
        //    SceneManager.LoadScene("Log_In");
        //}
        //else
        //{

        //}
    }

    private void Build_Promotional_Codes()
    {
        int index = 0;

        lst.Add("Promotional code 1");
        lst.Add("Promotional code 2");
        lst.Add("Promotional code 3");
        lst.Add("Promotional code 4");
        lst.Add("Promotional code 5");

        foreach(string str in lst)
        {
            _Text.text = lst.ToString();
            //_Content.
        }
    }
2

You need to assign your list strings values to text gameobjects and then parent (use transform.SetParent) those gameobjects to the content object of the scrollview.

3

Can you provide sample code? Thanks

4

The problem you’re having is that you only have one text component(that i assume is already in the scene, and you’re getting a reference to) and you’re overriding the text that it has, you need to either have a new component for every line (like @Munchy2007 said) and set it’s text to what ever, or keep it as one but add the texts instead of overriding it and use new line mod ( /n or System.Enviroment.NewLine)

The better option is to have a new object for each element you want to display, imo.
Have a blank-slate object that have all the setting needed(like font, size, color, w/e), have it as a prefab, instantiate it, parent it to the content, set its text.

I can provide a some-what related sample code when I get back from work.(from one of my games shop UI)

5

Ooooo hh right right right yes I need to have it create a new instance of the Text object each time. I’m sorry I over looked that detail. Yes a code sample would be great. Thank you very much for your help.

6

a bit late, but here’s the shop that fills my UI shop

        void PopulateShop(){

            Part[] parts = Resources.LoadAll ("Parts", typeof(Part)).Cast<Part> ().ToArray (); //get all the elements you want to display

            for (int i = 0; i < parts.Length; i++) {
               
                GameObject go = (GameObject)Instantiate (UIPartShop, shopContent.transform, false); //Spawn a 'blank' object and parent that to the content
                UI_Part uip = go.GetComponent<UI_Part> (); //Get the reference to the script on the object
                uip.Setup (parts [i]); //Set it up with the information from parts[i]
                go.GetComponentInChildren<Button> ().onClick.AddListener (uip.Buy); //Find it's button and add the function "Buy" to it
            }

        }
1 Like
7

Not sure I follow your logic. Do you have a tut or something I can review? I have tried watching several tuts on this topic and everyone seems to be adding their objects by hand. I think what I need is more of a Data Table or list box. What I will be doing is pulling down a data table from my data base. It will have a list of Promotional Codes the user can use. I’d like to use a button so they can click on it and it auto fills a input field for them but a simple text list would be fine too. I just need something dynamic to build a list.

In a nutshell I just need to know how to build the object via script or dynamically and add it to the scroll view content. If any one has a tut on how to do this that would be great. Thanks

8

I think I found the answer to my question. I found this tut: https://www.studica.com/blog/unity-ui-tutorial-scroll-grid

came up with this logic. Still building it but you get the idea:

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UI;

public class Load_Promotional_Code : MonoBehaviour
{
    public GameObject _txtPromotionalCode;// This is our prefab object that will be exposed in the inspector
    private List<string> _lstPromotionalCodes = new List<string>();

    // Use this for initialization
    void Start ()
    {
        User_Data._Current_Scene = "Promotional_Code";

        //Logged In Redirect
        //if (!User_Data._Logged_In)
        //{
        //    SceneManager.LoadScene("Log_In");
        //}
        //else
        //{

        //}
    }

    void Populate()
    {
        GameObject obj; // Create GameObject instance   
        int count = 0; //get this value from datatable count returned from database

        for (int i = 0; i < count; i++)
        {
            // Create new instances of our prefab until we've created as many as we specified
            obj = (GameObject)Instantiate(_txtPromotionalCode, transform);

            obj.GetComponent<Text>().text = "";
        }
    }
}