Generate signed apk without typing key

Question

First of all here goes my signinConfigs:

signingConfigs {
        development {
            storeFile file("mykey.jks") //Path to the keystore file
            keyAlias "mykey"
            storePassword "mykeydev"
            keyPassword "mykeydev"
        }
        production {
            storeFile file("mykey.jks") //Path to the keystore file
            keyAlias "mykey"
            storePassword "mykeyprod"
            keyPassword "mykeyprod"
        }
}

And now my flavors:

productFlavors {
    development{
        applicationId "br.com.myapp.dev"
        signingConfig signingConfigs.development
        resValue "string", "app_name", "DEV"
    }

    production {
        applicationId "br.com.myapp"
        signingConfig signingConfigs.production
        resValue "string", "app_name", "PROD"
    }
}

I have under by buildTypes this:

buildTypes {
    release {
        minifyEnabled false
        productFlavors.production.signingConfig signingConfigs.production
        productFlavors.development.signingConfig signingConfigs.development
    }
}

And here goes my question, Why am I asked for keyPassword and storePassword every time i want to generate a new signed apk file, if all keys and stuff are inside my .gradle file?

Answer 1

When you build from the "Build -> Generate Signed apk" you'll need to enter Android's studio password once in a while, but it saves the passwords encrypted for you. This is the safest way to go.

But since you need an automated way, you can use the "Terminal" view, and type: ./gradlew assembleRelease. (If you're in a windows machine I think it's gradlew assembleRelease).

In any case, it's not advisable to write your password inside the build.gradle file:

android {

  signingConfigs {
    release {
        storeFile file('/your/keystore/location/key')
        keyAlias 'your_alias'
        keyPasswordString ps = System.getenv("ps")
        storePasswordif System.getenv("ps"ps == null) {
             throw new GradleException('missing ps env variable')
        }
        keyPassword ps
        storePassword ps
    }
}