Modify UI text from script at runtime in android device

Hi!
I want to modify an UI text at runtime when I press buttons.
The problem is that it doesn't appear on the Android device although it does appear in the editor and in play mode.
The UI Text is child of a Canvas.

Can anybody help me?

Thanks!

Code (CSharp):

1. using System.Collections;
2. using System.Collections.Generic;   // For List
3. using UnityEngine;
4. using UnityEngine.UI;
5. using System.IO;                    // For parsing text file, StringReader
6. using System.Text;
7. using System;
8. using UnityEngine.EventSystems;     // Required when using Event data.
9. //
10. public class TextImporterPrefab : MonoBehaviour
11. {
12.     //
13.     public string filePath;             //Es el nombre de la ruta
14.     public int currentLine;
15.     public int endAtLine;
16.     // Array donde se guardan los textos
17.     string[] texto = new string[60];
18.     // Para instanciar el texo
19.     public GameObject textPrefab;
20.     public Text myText;
21.     //
22.     void Start()
23.     {
24.         // Crear nuevo prefab de texto
25.         GameObject nuevoTexto = Instantiate(textPrefab) as GameObject;
26.         nuevoTexto.transform.SetParent(this.transform, false);
27.         //
28.         filePath = Path.Combine(Application.streamingAssetsPath, "textos.txt");
29.         StreamReader theReader = new StreamReader(filePath, Encoding.Default);          //Encoding.Default para que aparezcan las tildes y las eñes (UTF-8)
30.         //
31.         if (filePath != null)
32.         {
33.             for (int i = 0; i < 50; i++)
34.             {
35.                 texto[i] = theReader.ReadLine();
36.             }
37.             theReader.Close();
38.             //
39.             for (int i = 0; i < 50; i++)
40.             {
41.                 //Debug.Log(names[i]);
42.             }
43.         }
44.         else
45.             Debug.Log("Nothing");
46.         //
47.         if (endAtLine == 0)
48.         {
49.             endAtLine = texto.Length - 1;
50.         }
51.         myText = nuevoTexto.GetComponent<Text>();
52.     }
53.     //
54.     void Update()
55.     {
56.         myText.text = texto[currentLine];
57.     }
58.     //
59.     public void Call()
60.     {
61.         currentLine += 1;
62.     }
63.     //
64. }
65.  

P.D: Sorry for my bad english :-(

 

Note that on some platforms it is not possible to directly access the StreamingAssets folder because there is no file system access in the web platforms, and because it is compressed into the .apk file on Android. On those platforms, a url will be returned, which can be used using the UnityWebRequest class.
https://docs.unity3d.com/ScriptReference/Application-streamingAssetsPath.html

 

Thank you for the information ;-)