Here are my steps for the task:
- Create PNG image file of size 512x512 pixels
- In Android Studio, in project view, highlight a mipmap directory
- In menu, go to File>New>Image Asset
- Click Image Button in Asset type button row
- Click on 3 Dot Box at right of Path Box.
- Drag image to source asset box
- Click Next (Note: Existing launcher files will be overwritten)
- Click Finish
Verbatim copy from: http://stackoverflow.com/a/41518027
