Autoincrement VersionCode with gradle extra properties

Question

I\'m building an Android app with gradle. Until now I used the Manifest file to increase the versionCode, but I would like to read the versionCode from an external file and

Answer 1

Create file version.properties

MAJOR=1
MINOR=3
PATCH=6
VERSION_CODE=1

Change build.gradle :

android {
def _versionCode=0
def _major=0
def _minor=0
def _patch=0

def _applicationId = "com.example.test"

def versionPropsFile = file('version.properties')

if (versionPropsFile.canRead()) {
    def Properties versionProps = new Properties()

    versionProps.load(new FileInputStream(versionPropsFile))

    _patch = versionProps['PATCH'].toInteger() + 1
    _major = versionProps['MAJOR'].toInteger()
    _minor = versionProps['MINOR'].toInteger() 
    _versionCode= versionProps['VERSION_CODE'].toInteger()+1
    if(_patch==99)
    {
        _patch=0
        _minor=_minor+1
    }
    if(_major==99){
        _major=0
        _major=_major+1
    }

    versionProps['MAJOR']=_major.toString()
    versionProps['MINOR']=_minor.toString()
    versionProps['PATCH']=_patch.toString()
    versionProps['VERSION_CODE']=_versionCode.toString()
    versionProps.store(versionPropsFile.newWriter(), null)
}
else {
    throw new GradleException("Could not read version.properties!")
}
def _versionName = "${_major}.${_versionCode}.${_minor}.${_patch}"


compileSdkVersion 23
buildToolsVersion "23.0.3"

defaultConfig {
    applicationId _applicationId
    minSdkVersion 11
    targetSdkVersion 23
    versionCode _versionCode
    versionName _versionName
}

}

Output : 1.1.3.6