Adding an icon-Icons from solutions not copying and pasting

Everything in chapter 2 has been in the green up to the point of adding an icon. Whenever I go and download the solutions at and follow the file path as directed I get to the 4 dpi directories that I am supposed to copy and past over to project–>app/src/main/res but whenever I go and copy (I’ve both highlighted the 4 dpi directories listed and right clicked copy and tried highlighting the 4 and dragging) the directories don’t show up in android studio, The image in the book shows the arrow icons showing up under drawable and I’m getting nothing.