I am new to programming and Unity3D. I want to show a circular progress bar starting invisible and growing in 3 seconds to a circular line when reloading is done. How can I do that?
Put your unfilled circle outline sprite in image.
Change the Image type to Filled. Then you can play with Fill amount property and also control in through code.
Some credit goes to Shubham who I copied from instructions on a slightly different subject.