Flutter, sign with both debug keys and release keys on Android

Question

I followed the instructions to build release for Android and it was successful. https://flutter.io/docs/deployment/android#configure-signing-in-gradle

However, this project is open source and without the keys.properties file it will fail to build. This means that contributors are unable to run the project.

How do I setup build.gradle to sign debug with debug keys when doing a --debug or --profile build and with release keys from keys.properties with a --release build?

Answer 1

this will use release keys only if the key.properties file exists

signingConfigs {
    release {
        if (keystorePropertiesFile.exists()) {
            keyAlias keystoreProperties['keyAlias']
            keyPassword keystoreProperties['keyPassword']
            storeFile file(keystoreProperties['storeFile'])
            storePassword keystoreProperties['storePassword']
        }
    }
}

buildTypes {
    release {
        if (keystorePropertiesFile.exists()) {
            signingConfig signingConfigs.release
            println "Signing with key.properties"
        } else {
            signingConfig signingConfigs.debug
            println "Signing with debug keys"
        }
    }
}