Text Log View Unity

TextManager.cs

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

public class TextManager : MonoBehaviour {

    public Transform contentView;
    public GameObject messagePrefab;

    public void addMessage(string text) {

        // Add the text object
        GameObject textObject = Instantiate(messagePrefab);
        Text textComponent = textObject.GetComponent<Text>();
        textComponent.text = text;
        textObject.transform.SetParent(contentView);

        // Scroll to bottom
        this.gameObject.GetComponent<ScrollRect>().normalizedPosition = new Vector2(0, 0);
    }

	// Use this for initialization
	void Start () {
		
	}
	
	// Update is called once per frame
	void Update () {
		
	}
}

TextManagerHowTo.md

1. Create a ScrollRect component on a GameObject and add the above script to it.
2. Add a Vertical Layout Group component to the content object.
3. User a Content Size Fitter component to adjust size if needed.
4. Create a Text GameObject to set as the prefab, and link it to the above script.
5. Call the addMessage method to add text.