Keystore name     :- doc
Keystore password :- doc@28
Alias name        :- docalias

copy doc-release.apk to app folder
cd to app folder

keytool -genkey -v -keystore doc.keystore -alias docalias -keyalg RSA -keysize 2048 -validity 10000



Rajkumar Arya
Dakshith Technologies
Dakshith Technologies
Gurgaon
Haryana
IN
yes

jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore doc.keystore doc-release.apk docalias

copy signed apk to C:sdk\sdk\build-tools\25.0.3
cd to C:\sdk\sdk\build-tools\25.0.3
zipalign -v 4 doc-release.apk doc.apk
copy final zipaligned fbc.apk to app\fbc folder
visit https://play.google.com/apps/publish and upload final apk to it.