How to convert Samsung .spr/.bmp to .png
Instruction
- Place all the .spr files inside the src/main/res/drawable folder inside the project
- Replace all the .spr extension to .bmp (Tip: Use BulkRenameUtility software and use extension)
- Build the app with Android Studio or Gradle cli
- Install the app apk on Samsung devices
- Press Convert now and check out the result on convert folder on storage
Credits to dgadelha @xda https://forum.xda-developers.com/showpost.php?p=77683386&postcount=105