Translate Localize in Array

You can change from using a string array to a LocalizedString array.
Something like this:

Code (csharp):

1. using System.Collections;
2. using UnityEngine;
3. using UnityEngine.Localization;
4. using UnityEngine.UI;
5.  
6. public class DialogueControl : MonoBehaviour
7. {
8.     [Header("Components")]
9.     public GameObject dialogueObj;
10.  
11.     public Image profile;
12.  
13.     public Text speechText;
14.  
15.     public Text actorNameText;
16.  
17.     [Header("Settings")]
18.     public float typingSpeed;
19.  
20.     private LocalizedString[] sentences;
21.  
22.     private int index;
23.  
24.     public Dialogue d;
25.  
26.     private void Start()
27.     {
28.         d = FindObjectOfType<Dialogue>();
29.     }
30.  
31.     public void Speech(Sprite p, LocalizedString[] txt, string actorName)
32.     {
33.         dialogueObj.SetActive(true);
34.         profile.sprite = p;
35.         sentences = txt;
36.         actorNameText.text = actorName;
37.         StartCoroutine(TypeSentence());
38.     }
39.  
40.     IEnumerator TypeSentence()
41.     {
42.         var sentence = sentences[index].GetLocalizedString();
43.         foreach (char letter in sentence.ToCharArray())
44.         {
45.             speechText.text += letter;
46.             yield return new WaitForSeconds(typingSpeed);
47.         }
48.     }
49.  
50.     public void NextSentence()
51.     {
52.         if (index < sentences.Length - 1)
53.         {
54.             index++;
55.             speechText.text = "";
56.             StartCoroutine(TypeSentence());
57.         }
58.         else
59.         {
60.             speechText.text = "";
61.             index = 0;
62.             dialogueObj.SetActive(false);
63.         }
64.     }
65. }

Alternatively, you could call directly and use the sentence as the key when calling into GetLocalizedString.

Code (csharp):

1. using System.Collections;
2. using System.Collections.Generic;
3. using UnityEngine;
4. using UnityEngine.Localization.Settings;
5. using UnityEngine.UI;
6.  
7. public class DialogueControl : MonoBehaviour
8. {
9.     [Header("Components")]
10.     public GameObject dialogueObj;
11.  
12.     public Image profile;
13.  
14.     public Text speechText;
15.  
16.     public Text actorNameText;
17.  
18.     [Header("Settings")]
19.     public float typingSpeed;
20.  
21.     private string[] sentences;
22.  
23.     private int index;
24.  
25.     public Dialogue d;
26.  
27.     private void Start()
28.     {
29.         d = FindObjectOfType<Dialogue>();
30.     }
31.  
32.     public void Speech(Sprite p, string[] txt, string actorName)
33.     {
34.         dialogueObj.SetActive(true);
35.         profile.sprite = p;
36.         sentences = txt;
37.         actorNameText.text = actorName;
38.         StartCoroutine(TypeSentence());
39.     }
40.  
41.     IEnumerator TypeSentence()
42.     {
43.         var translated = LocalizationSettings.StringDatabase.GetLocalizedString("String Table Name", sentences[index]);
44.         foreach (char letter in translated.ToCharArray())
45.         {
46.             speechText.text += letter;
47.             yield return new WaitForSeconds(typingSpeed);
48.         }
49.     }
50.  
51.     public void NextSentence()
52.     {
53.         if (speechText.text == sentences[index])
54.         {
55.             if (index < sentences.Length - 1)
56.             {
57.                 index++;
58.                 speechText.text = "";
59.                 StartCoroutine(TypeSentence());
60.             }
61.             else
62.             {
63.                 speechText.text = "";
64.                 index = 0;
65.                 dialogueObj.SetActive(false);
66.             }
67.         }
68.     }
69. }