sign.sh

#!/bin/sh
# Set path to your Android keystore and your keystore alias here, or put them in your environment
[ -z "$ANDROID_KEYSTORE_FILE" ] && ANDROID_KEYSTORE_FILE=$HOME/.android/debug.keystore
[ -z "$ANDROID_KEYSTORE_ALIAS" ] && ANDROID_KEYSTORE_ALIAS=androiddebugkey
PASS="--ks-pass pass:android"
[ -n "$ANDROID_KEYSTORE_PASS" ] && PASS="--ks-pass env:ANDROID_KEYSTORE_PASS"
[ -n "$ANDROID_KEYSTORE_PASS_FILE" ] && PASS="--ks-pass file:$ANDROID_KEYSTORE_PASS_FILE"

APPNAME=`grep AppName AndroidAppSettings.cfg | sed 's/.*=//' | tr -d '"' | tr " '/" '---'`
APPVER=`grep AppVersionName AndroidAppSettings.cfg | sed 's/.*=//' | tr -d '"' | tr " '/" '---'`

cd project/app/build/outputs/apk/release

# Remove old certificate
rm -f Signed.apk
cp -f app-release.apk Signed.apk
#zip -d Signed.apk "META-INF/*"
# Sign with the new certificate
rm -f ../../../../../../$APPNAME-$APPVER.apk
zipalign 4 Signed.apk ../../../../../../$APPNAME-$APPVER.apk
rm -f Signed.apk
echo Using keystore $ANDROID_KEYSTORE_FILE
stty -echo
apksigner sign --ks $ANDROID_KEYSTORE_FILE --ks-key-alias $ANDROID_KEYSTORE_ALIAS $PASS ../../../../../../$APPNAME-$APPVER.apk || exit 1
stty echo
echo