Add buildConfigFields from .properties file via code

README.md

Add buildConfigFields from .properties file Create file in folder: D:\MyProject\app\properties\api\debug.properties

build.gradle

 defaultConfig {
        ...

        //region ---Adding properties/payment/release.properties KEYs to BuildConfig---
        def paymentPropsFile = file('properties/api/debug.properties')
        if (paymentPropsFile.canRead()) {
            Properties properties = new Properties()
            properties.load(new FileInputStream(paymentPropsFile))
            for(String key : properties.stringPropertyNames()) {
                def propertyValue = properties.getProperty(key)
                def propertyParams = propertyValue.split(";")
                buildConfigField "${propertyParams[0]}", "${key}", "${propertyParams[1]}"
            }
        } else {
            throw new Exception("Could not read properties/api/debug.properties!")
        }
        //endregion

    }

release.properties

#Tue Sep 05 14:02:16 EEST 2017
API_VERSION=int;2
SECRET_PART=String;"AnyString"