Rebuild or regenerate 'ic_launcher.png' from images in Android Studio

Question

When one first creates a new project, that dialog lets you point to some external .PNG file, and then when that dialog completes, it generates 4 different pixel-sizes of ima

Answer 1

Put the desired launcher image (.png) in drawable folder.

In AndroidManifest.xml, add

android:icon="@drawable/your_img_name"

under application tag.

Answer 2

Click "File > New > Image Asset"

Asset Type -> Choose -> Image

Browse your image

Set the other properties

Press Next

You will see the 4 different pixel-sizes of your images for use as a launcher-icon

Press Finish !

Answer 3

You can create an icon using this website https://romannurik.github.io/AndroidAssetStudio/index.html.

Download the icon, go to File Explorer - where your projects are saved, the default path is C:\Users\Your Name\AndroidStudioProjects\Project Name\app\src\main\res\

and copy the folders you downloaded to the res folder.