When i'm build my app using this code "ionic build android" Show an error

This is my error.
Error: The platform “andoird” does not appear to have been added to this project
how to fix it .please help me

you have to add the platform first before using it

ionic cordova platform add android

remember to run this in administrator mode

Are you really running ionic build android? This command doesn’t exist in current Ionic CLI versions.

What is your ionic info output?