Casting Error C# between Object[] and Texture2D[]

Questions & Answers
1

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

public class BackChange : MonoBehaviour
{
	
	bool swap = true;
	public Texture2D[] files;

	void Start ()
	{
		//Line Below has ERROR
		files = (Texture2D[]) Resources.LoadAll("Frames");
		StartCoroutine ("textureSwap", 0.041);
	}
	
	IEnumerator textureSwap (float swapAfter)
	{
		int i;
		int num = 0;
	
		for (i = 1; i > 0; i++)
		{
			if (swap == true)
			{
				Texture2D file = files[num];
				GetComponent<RawImage>().texture = file;
				swap = false;
				Debug.Log (file);
				yield return new WaitForSeconds (swapAfter);
			}
			if (swap == false)
			{
				if (num < 168){
					num = num + 1;
				}else if (num >= 168){
					num = 0;
				}

				Debug.Log ("Ran!");

				swap = true;
			}
    		}
    	}
    }

Line 13 is where there is an error: files = (Texture2D[]) Resources.LoadAll(“Frames”);

My “Frames” folder is full of JPEG images which I have already used earlier as a Texture2D.

Here is the full error output: InvalidCastException: Cannot cast from source type to destination type.
BackChange.Start () (at Assets/Scripts/BackChange.cs:13)

This should be able to cast so I don’t know why I am getting this error.

Any help would be greatly appreciated!

2

Seems like it’s picking up more then Texture2D types. You can supply the type to the method to filter out anything undesired.

Change:

files = (Texture2D[]) Resources.LoadAll("Frames");

to

files = (Texture2D[]) Resources.LoadAll("Frames", typeof(Texture2D));
3

I changed my code to this:

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

public class Backtest : MonoBehaviour {

bool swap = true;
public Object[] frames;

void Start() {
	frames = Resources.LoadAll("Frames", typeof(Texture2D));
	StartCoroutine ("textureSwap", 0.041);
}

IEnumerator textureSwap (float swapAfter)
{
	int i;
	int num = 0;
	
	for (i = 1; i > 0; i++)
	{
		if (swap == true)
		{
			GetComponent<RawImage>().texture = (Texture) frames[num];
			swap = false;
			yield return new WaitForSeconds (swapAfter);
		}
		if (swap == false)
		{
			if (num < 168){
				num = num + 1;
			}else if (num >= 168){
				num = 0;
			}

			swap = true;
		}
	}
}

}

And now it works. I still don’t know why the previous cast I tried didn’t work but at-least now I have a solution. :smiley:

To anyone else with this problem I suggest you try to cast to “Texture” instead of “Texture2D” and see if that works.