Gradle Android Studio signing with a properties file

Question

I´m trying to sign my app with the gradle build file. When I use the plain signingConfigs it works (signingConfigs.release)! But If I´m trying to read the properties from the properties-file it won´t work. (signingConfigs.config)

Properties props = new Properties();
props.load(new FileInputStream(file(rootProject.file("signing.properties"))))

android {
        signingConfigs {
            config {
                storeFile file(props["storeFile"])
                storePassword props["storePassword"]
                keyAlias props["keyAlias"]
                keyPassword props["KeyPassword"]
            }
            release {
                storeFile file("..\\xyz.jks")
                storePassword "****"
                keyAlias "****"
                keyPassword "****"
            }
        } 
    .
    .
    .
        buildTypes {
            release {
                runProguard false
                proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.txt'
                signingConfig signingConfigs.release
            }
            debug {
                applicationIdSuffix '.debug'
                versionNameSuffix '-SNAPSHOT'
            }
        }

Properties file:

storeFile=xyz.jks
storePassword=xyz
keyAlias=xyz
keyPassword=xyz

When I run the project, android studios show a dialog which says:

xyz.apk is not signed. Please configure the signing information for the selected flavor using the Project Structure dialog.

The property file is read correctly because I can log some properties from the file throw the console.

Some of my system details:

Android Studio 0.8.6 Windows 8.1 x64 gradle 1.12

Hope anyone can help me. If you want to know more details, then ask me.

Answer 1

This is what I do and it works for me:

signingConfigs {
    release {
        def Properties localProps = new Properties()
        localProps.load(new FileInputStream(file('../local.properties')))
        def Properties keyProps = new Properties()
        assert localProps['keystore.props.file'];
        keyProps.load(new FileInputStream(file(localProps['keystore.props.file'])))
        storeFile file(keyProps["store"])
        keyAlias keyProps["alias"]
        storePassword keyProps["storePass"]
        keyPassword keyProps["pass"]
    }
}

My local.properties file contains a path to a "keystore.properties" file. That contains my info about the keystore:

store=***
alias=***
pass=***
storePass=***

Perhaps the loading of two Propreties file is redundant, but it does work for me.