Generate Signed APK
- First create a key-store file by following this link
 - Then Copy your key.jks file to Project » keys » key.jks
 

- To create apk, open android studio terminal then write command flutter build
 
apk --no-tree-shake-icons
- To create split apk, open android studio terminal then write command flutter build
 
apk --split-per-abi --no-tree-shake-icons
- To create app bundle, open android studio terminal then write command flutter build app bundle
 
--split-per-abi --no-tree-shake-icons
- A Signed APK/Split APK or app bundle will be built according to your command