Script for build and sign an apk using Gradle.

release.sh

#!/bin/sh

set -e

./gradlew assembleRelease

my_path=$(pwd)/
me=$(whoami)

echo -n "Entre com o nome do keystore em /home/$me/.android: "
read -r keystore_location

echo -n "Entre com o alias_name do certificado: "
read -r alias_name


echo -n "Entre com o nome do modulo default: "
read -r project_directory

apk_location=$my_path$project_directory/build/outputs/apk/$project_directory-release-unsigned.apk
apk_location_aligned=$my_path$project_directory/build/outputs/apk/$project_directory-release.apk
keystore_location=/home/$me/.android/$keystore_location.jks

echo 'comprimindo o apk com maxima eficiencia'

unzip "$apk_location" -d "$my_path$project_directory/build/outputs/apk/$project_directory-release-unsigned-uncompressed"

echo 'Apagando o META-INF'

rm -r -f "$my_path$project_directory/build/outputs/apk/$project_directory-release-unsigned-uncompressed/META-INF"

echo 'Apagando APK antigo'
rm -r -f "$my_path$project_directory/build/outputs/apk/$project_directory-release-unsigned.apk"

echo 'Comprimindo novamente com maior eficiencia'
7z a -tzip "$my_path$project_directory/build/outputs/apk/$project_directory-release-unsigned.apk" "$my_path$project_directory/build/outputs/apk/$project_directory-release-unsigned-uncompressed/*" -mm=Deflate -mpass=15 -mfb=258

echo 'Apagando pasta temporaria'
rm -r -f "$my_path$project_directory/build/outputs/apk/$project_directory-release-unsigned-uncompressed"

echo 'jarsigner'
jarsigner -verbose -sigalg SHA1withRSA -digestalg SHA1 -keystore "$keystore_location" "$apk_location" $alias_name
echo 'jarsigner finalizado'

echo 'zipalign'
/home/$me/android-sdk/build-tools/21.1.2/zipalign -v 4 "$apk_location" "$apk_location_aligned"
echo 'zipalign finalizado'