sign apk

signapk.sh

#!/bin/bash

# Key Vars 
keyfile='my-release-key.jks'

# APK Vars
filename="${1%.*}"
ext='.apk'
aligned="$filename-aligned$ext"
signed="$filename-signed$ext"


function generate_key {
  echo 'Need to generate release key, fill out the information below'
  keytool -genkey -v -keystore "$keyfile" -keyalg RSA -keysize 2048 -validity 10000 -alias my-alias
}

function sign_apk {
  echo "Signing $1"
  zipalign -v -p 4 "$1" "$aligned"
  apksigner sign --ks "$keyfile" --out "$signed" "$aligned"
}


if [ -f "$keyfile" ]; then
  sign_apk "$1"
else
  generate_key
  if [ "$?" -eq 0 ]; then
    sign_apk "$1"
  fi
fi