Signing product flavors with gradle
AndroidGradleBuildbuild.gradleCode SigningAndroid Problem Overview
I am tyring to migrate my projects to gradle. One of my projects has multiple product flavors and each one of them has to be signed with a different signingConfig
in its release version. So this is what I tried so far:
buildscript {
...
}
apply plugin: 'android'
android {
compileSdkVersion 17
buildToolsVersion '17'
signingConfigs {
flavor1 {
storeFile file("keystore")
storePassword "secret"
keyAlias "aliasForFlavor1"
keyPassword "secretFlavor1"
}
flavor2 {
storeFile file("keystore")
storePassword "secret"
keyAlias "aliasForFlavor2"
keyPassword "secretFlavor2"
}
}
productFlavors {
flavor1 {
signingConfig signingConfigs.flavor1
}
flavor1 {
signingConfig signingConfigs.flavor2
}
}
}
dependencies {
...
}
When I run gradle build
I get a groovy.lang.MissingFieldException
and the following error message:
No such field: signingConfigs for class: com.android.build.gradle.internal.dsl.GroupableProductFlavorFactory
So I assume the productFlavors
.* part of the Gradle script is not the right place to put code signing configurations.
Android Solutions
Solution 1 - Android
You can declare signing config
for each flavor
in buildType
. Here is my gradle file for release signing flavors with different keystores.
android {
signingConfigs {
configFirst {
keyAlias 'alias'
keyPassword 'password'
storeFile file('first.keystore')
storePassword 'password'
}
configSecond {
keyAlias 'alias'
keyPassword 'password'
storeFile file('second.keystore')
storePassword 'password'
}
}
compileSdkVersion 23
buildToolsVersion "23.0.2"
defaultConfig {
minSdkVersion 14
targetSdkVersion 23
}
productFlavors{
flavor1 {
applicationId "com.test.firstapp"
}
flavor2 {
applicationId "com.test.secondapp"
}
}
buildTypes {
release {
productFlavors.flavor1.signingConfig signingConfigs.configFirst
productFlavors.flavor2.signingConfig signingConfigs.configSecond
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'),
'proguard-rules.pro'
}
}
}
buildTypes
block should be placed after productFlavors
block, I mean order is important.
Solution 2 - Android
Per the user guide, signingConfigs for flavors are supported.
The problem here has to do with the scope of the signingConfigs object. I just assigned it to a variable inside the productFlavors
block, but outside the flavor1
flavor block to fix the issue:
productFlavors {
def flavor1SigningVariable = signingConfigs.flavor1
flavor1 {
...
signingConfig flavor1SigningVariable
...
}
Solution 3 - Android
The gradle plugin for android only supports signing per build type, not per flavor. The reason for this is that any given variant (build type + flavors) can only be signed by one key, but can be a combination of several flavor groups. For example your flavor groups could be cpu (x86/arm) and version (free/paid), that's four different variants right there.
The solution you're looking for is to create separate build types for your different release versions. For example, your build types might be debug
, release
, release-beta
, like this:
...
android {
...
buildTypes {
debug {
signingConfig signingConfigs.debug
}
release {
signingConfig signingConfigs.release
}
release-beta {
initWith release
signingConfig signingConfigs.release-beta
}
}
}
The initWith
above just tells gradle that release-beta
should be a copy of the release
build type, only signed with a different key.
Solution 4 - Android
Maybe another interesting solution with dynamic flavor signing configs and other advantages
- Im fine with defining app id and app name of flavors in gradle (it is clear and just 2 lines for each flavor) but I do not want to define separate signing configs (gradle file would be too long when adding flavors)
- I also do not want to have sensitive signing information placed in gradle because of commiting it
- Bonus advantage is that debug build has another app id and app name.
.gitignore
...
/keystore.properties
.keystore.properties
storeFile=../mystore.jks
storePassword=...
keyAliasFlavor1=...
keyPasswordFlavor1=...
keyAliasFlavor2=...
keyPasswordFlavor2=...
app/build.gradle
def keystoreProperties = new Properties()
keystoreProperties.load(new FileInputStream(rootProject.file('keystore.properties')))
android {
...
buildTypes {
debug {
...
manifestPlaceholders = [appNameSuffix: " Dev"]
applicationIdSuffix ".dev"
}
release {
...
manifestPlaceholders = [appNameSuffix: ""]
productFlavors.all { flavor ->
flavor.signingConfig = android.signingConfigs.create("${flavor.name}")
flavor.signingConfig.storeFile = rootProject.file(keystoreProperties["storeFile"])
flavor.signingConfig.storePassword = keystoreProperties["storePassword"]
flavor.signingConfig.keyAlias = keystoreProperties["keyAlias${flavor.name}"]
flavor.signingConfig.keyPassword = keystoreProperties["keyPassword${flavor.name}"]
}
}
}
productFlavors {
Flavor1 {
applicationId "..."
manifestPlaceholders = [appNameBase: "MyApp 1"]
}
Flavor2 {
applicationId "..."
manifestPlaceholders = [appNameBase: "MyApp 2"]
}
// ... and many other flavors without taking care about signing configs
// (just add two lines into keystore.properties for each new flavor)
}
}
app/src/main/AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest ...>
...
<application android:label="${appNameBase}${appNameSuffix}" ...>
...
</application>
</manifest>
Solution 5 - Android
Gms
and Hms
builds
Split signing configs between Just for future ref if anyone has to split their signing configs between Gms
and Hms
builds.
This adds on the the answer listed here:
Maybe another interesting solution with dynamic flavor signing configs and other advantages
build.gradle
Option 1
gradle.startParameter.getTaskNames().each()
def keystorePropertiesFile = rootProject.file("keystore.properties")
def keystoreProperties = new Properties()
keystoreProperties.load(new FileInputStream(keystorePropertiesFile))
signingConfigs {
release {
storeFile file(keystoreProperties["RELEASE_STORE_FILE"])
storePassword keystoreProperties["RELEASE_STORE_PASSWORD"]
keyAlias keystoreProperties["RELEASE_KEY_ALIAS"]
keyPassword keystoreProperties["RELEASE_KEY_PASSWORD"]
}
releaseHms {
storeFile file(keystoreProperties["RELEASE_HMS_STORE_FILE"])
storePassword keystoreProperties["RELEASE_STORE_PASSWORD"]
keyAlias keystoreProperties["RELEASE_KEY_ALIAS"]
keyPassword keystoreProperties["RELEASE_KEY_PASSWORD"]
}
debug {
// use default debug key to sign
}
}
buildTypes {
release {
...
gradle.startParameter.getTaskNames().each { task ->
if (task.toLowerCase().contains("gms")) {
signingConfig signingConfigs.release
}
if (task.toLowerCase().contains("hms") {
signingConfig signingConfigs.releaseHms
}
}
}
debug {
...
gradle.startParameter.getTaskNames().each { task ->
if (task.toLowerCase().contains("gms")) {
signingConfig signingConfigs.debug
}
if (task.toLowerCase().contains("hms") {
signingConfig signingConfigs.releaseHms
}
}
flavorDimensions "serviceplatform"
productFlavors {
hms {
dimension "serviceplatform"
applicationIdSuffix ".huawei"
versionNameSuffix "-huawei"
}
gms {
dimension "serviceplatform"
applicationIdSuffix ".android"
}
}
sourceSets {
main {
res.srcDirs = [ "src/main/res", "src/main/res/layout/toolbar", "src/main/res/layout/fragment", "src/main/res/layout/activity" ]
}
gms {
java.srcDir("src/gms/java")
}
hms {
java.srcDir("src/hms/java")
}
}
Option 2
productFlavors.gms.signingConfig
Ensure your flavorDimensions
is before buildTypes
flavorDimensions "serviceplatform"
productFlavors {
hms {
...
}
gms {
...
}
}
buildTypes {
release {
...
productFlavors.gms.signingConfig signingConfigs.release
productFlavors.hms.signingConfig signingConfigs.releaseHms
}
debug {
...
productFlavors.gms.signingConfig signingConfigs.debug
productFlavors.hms.signingConfig signingConfigs.releaseHms
}
}
Solution 6 - Android
This is the Kotlin DSL equivalent of ashakirov's answer:
// See https://stackoverflow.com/q/60474010
fun getLocalProperty(key: String) = gradleLocalProperties(rootDir).getProperty(key)
fun String?.toFile() = file(this!!)
// Could also use System.getenv("VARIABLE_NAME") to get each variable individually
val environment: Map<String, String> = System.getenv()
android {
signingConfigs {
create("MyFirstConfig") {
keyAlias = getLocalProperty("signing.keyAlias") ?: environment["SIGNING_KEY_ALIAS"]
storeFile = (getLocalProperty("signing.storeFile") ?: environment["SIGNING_STORE_FILE"]).toFile()
keyPassword = getLocalProperty("signing.keyPassword") ?: environment["SIGNING_KEY_PASSWORD"]
storePassword = getLocalProperty("signing.storePassword") ?: environment["SIGNING_STORE_PASSWORD"]
enableV1Signing = true
enableV2Signing = true
}
create("MySecondConfig") {
keyAlias = getLocalProperty("signing.keyAlias2") ?: environment["SIGNING_KEY_ALIAS2"]
storeFile = (getLocalProperty("signing.storeFile2") ?: environment["SIGNING_STORE_FILE2"]).toFile()
keyPassword = getLocalProperty("signing.keyPassword2") ?: environment["SIGNING_KEY_PASSWORD2"]
storePassword = getLocalProperty("signing.storePassword2") ?: environment["SIGNING_STORE_PASSWORD2"]
enableV1Signing = true
enableV2Signing = true
}
}
productFlavors {
create("flavor1") {
// ...
}
create("flavor2") {
// ...
}
}
buildTypes {
getByName("release") { // OR simply release { in newer versions of Android Gradle Plugin (AGP)
productFlavors["flavor1"].signingConfig = signingConfigs["MyFirstConfig"]
productFlavors["flavor2"].signingConfig = signingConfigs["MySecondConfig"]
// OR alternative notation
// productFlavors {
// getByName("flavor1") {
// signingConfig = signingConfigs["MyFirstConfig"]
// }
// getByName("flavor2") {
// signingConfig = signingConfigs["MySecondConfig"]
// }
// }
}
}
}