WWW.progress failing with "Object reference not set to an instance of an object" err

Unity Engine
1

Hello,

I’m able to download the image properly, but when trying to obtain the progress while it loads I’m running into an Object reference issue, and I can’t quite figure it out. Any ideas? ( Object reference not set to an instance of an object )

It happens on this line: var progress : float = wwwimg.progress;

function Update () {

	if (!imgStarted)															 // If the image hasn't started downloading...
	{
	 	var wwwimg : WWW = new WWW (urlimg);									// Download the image from urlimg
		imgStarted = true;														// Set to true so it doesn't keep looping
	} 

	if (!imgLoaded)																// if the image isn't loaded yet
	{
		var progress : float = wwwimg.progress;									// set a variable to hold the progress
		if (wwwimg.progress == 1)												// if the progress = 1 (done)
		{
			print ("it's done!");												// Print that it's done in consol
			var imgLoaded = true;												// Toggle imgLoaded to true
		}
		else
		{
			print( "Download Progress: " + 100*wwwimg.progress + "% ..." );		// If not done, print progress to consol
		}
		if (imgLoaded == true)													// If image is done
		{
			renderer.material.mainTexture = wwwimg.texture;						// Add the image as texture to this.material
		} 
	} 
}




// Below is a similar, simpler method of doing the same thing, same error, however.

function Update () {

	if (!imgStarted)															 // If the image hasn't started downloading...
	{
	 	var wwwimg : WWW = new WWW (urlimg);									// Download the image from urlimg
		imgStarted = true;														// Set to true so it doesn't keep looping
	} 

	if (wwwimg.progress != 1)
	{
	print( "Download Progress: " + 100*wwwimg.progress + "% ..." );
	}
	else
	{
		if (imgLoaded == false)													// If image is done
		{
			renderer.material.mainTexture = wwwimg.texture;						// Add the image as texture to this.material
			imgLoaded = true;
		} 
	}
}
2

Thats because you hid the definition of wwwimg under an if condition

 if (!imgStarted)                                                             // If the image hasn't started downloading...
    {
        var wwwimg : WWW = new WWW (urlimg);                                    // Download the image from urlimg
        imgStarted = true;                                                      // Set to true so it doesn't keep looping
    }

Move the definition of wwwimg outside of Update function.