User selected canvas background sprite

Questions & Answers
1

Any one know how I might be able to let a user select a background image of their own for a panel or canvas?

2

This really depends on the platform you target.

Anyway, you’ll have to go with a RawImage, as it uses a Texture2D, which can be loaded at runtime.

Texture2D can be loaded from StreamingAssets Path for example, or from the user documents folder.

If you want the user to locate a file on their computer, consider buying an extension from the AssetStore, there’s one that allows to have a file open dialog at runtime.

3

Users could specify the url/path then the system loads the image like the following example

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

public class NewBehaviourScript : MonoBehaviour
{
	[SerializeField]
	private Image background;

	[SerializeField]
	private string url;
	// local: url = "file:///D:/Images/example.jpg";
	// internet: url = "http://i.imgur.com/UVk2aZZ.png";

	void Start ()
	{
		StartCoroutine(downloadImage(url));
	}

	private IEnumerator downloadImage(string urlImage)
	{
		WWW wwwRequest = new WWW(urlImage);
		yield return wwwRequest;

		if (wwwRequest.error != null)
		{
			Debug.Log("<color=red>Error: " + wwwRequest.error + "</color>");
			yield break;
		}

		Texture2D image = wwwRequest.texture;
		background.sprite = Sprite.Create(image, new Rect(0f, 0f, image.width, image.height), Vector2.zero);
	}
}