Correct image adding method and correct image adding method

Correct image adding method and correct image adding method
This question is silly and naive. How to correctly add image resources

I have an image named back.png, which is directly copied to the project directory of the Finder.

Use the following statement:

RoleImageView. image = UIImage (named: "back ")

The image cannot be displayed.

In fact, it is not a problem with the statement, but the method of adding images is incorrect.

Instead of directly copying images to the project directory, you should drag them to the Assets. xcassets folder. Or click Assets. xcassets in the left column of Xcode, and select Import file from the menu.