Use a local.properties field when declaring a buildConfigField

Question

I have a build.gradle and a local.properties file. I want to declare a value in local.properties, which isn't checked in to version control, to use in build.gradle.

I have the buildConfigField working with:

buildTypes {
    debug {
        buildConfigField "String", "TEST", "test"
    }
}

Unfortunately though, this causes an error:

buildTypes {
    debug {
        buildConfigField "String", "TEST", local.properties.get("test")
    }
}

You can find code to steal here: http://stackoverflow.com/questions/20562189/sign-apk-without-putting-keystore-info-in-build-gradle/20573171#20573171 — Scott Barta, Sep 15 '14 at 19:02

score 12 · Answer 1 · answered Jul 23 '15 at 13:21

12

It can be achieved like:

def getProps(String propName) {
  def propsFile = rootProject.file('local.properties')
  if (propsFile.exists()) {
    def props = new Properties()
    props.load(new FileInputStream(propsFile))
    return props[propName]
  } else {
    return "";
  }
}

in your buildTypes block:

buildTypes {
    debug {
        buildConfigField "String", "TEST", getProps("test")
    }
}

answered Jul 23 '15 at 13:21

motou

726
4
12

3

Better to throw an Exception if the file or the propName isn't found, rather than silently returning null/empty string. – Vicky Chijwani Oct 18 '16 at 06:18

Use a local.properties field when declaring a buildConfigField

1 Answers1