Goto for android: https://flutter.io/android-release/β
Goto for ios: https://flutter.io/ios-release/β
If you have an existing keystore, skip to the next step. If not, create one by running the following at the command line:
keytool -genkey -v -keystore ~/key.jks -keyalg RSA -keysize 2048 -validity 10000 -alias key
Set up for Preparing an Android App for Release click hereββ
Set up for Preparing an IOS App for Release click hereβ
** $ flutter build apk --release
** $ flutter build --release