I have upload already my first .apk to Aptoide and the ask me :
"Sign an apk for us.
This method is used to verify that you are able to sign an apk using the same certificate used on the app you would like to certify.
1 - Download this apk.
2 - Sign the apk. (more)
use the following command to sign the apk
jarsigner -verbose -sigalg MD5withRSA -digestalg SHA1 -keystore
3 - Upload the signed apk "
How i can use the jarsigner for this?