Declare array/hashmap in gradle.properties file

The notation {myelement1=myvalue1, myelement2=myvalue2, myelement3=myvalue3} is simply a string representation of the object as the result of calling Map.toString(). It is not syntactically correct Groovy.

Your first example is the correct way to define a Map.

def myMap = [ key : 'value' ]

Defining an array is similar.

def myArray = [ 'val1', 'val2', 'val3' ]

Set the property to JSON string

myHash = {"first": "Franklin", "last": "Yu"}myArray = [2, 3, 5]

and parse it in build script with JsonSlurper:

def slurper = new groovy.json.JsonSlurper()slurper.parseText(hash) // => a hashmapslurper.parseText(array) // => an array

The JsonSlurper way is good, but I wanted a cleaner way to define both a simple string or an array as a property. I solved it by declaring the property as:

mygroup=myvalue1

or:

mygroup=myvalue1,myvalue2,myvalue3

Then inside Gradle retrieve the property with:

Properties props = new Properties()props.load(new FileInputStream(file('myproject.properties')))props.getProperty('mygroup').split(",")

And you will get an array of String. Be careful with space characters around the commas.