Example
/*Wrapping inside a method avoids auto incrementing on every gradle task run. Now it runs only when we build apk*/
ext.autoIncrementBuildNumber = {
if (versionPropsFile.canRead()) {
def Properties versionProps = new Properties()
versionProps.load(new FileInputStream(versionPropsFile))
versionBuild = versionProps['VERSION_BUILD'].toInteger() + 1
versionProps['VERSION_BUILD'] = versionBuild.toString()
versionProps.store(versionPropsFile.newWriter(), null)
} else {
throw new GradleException("Could not read version.properties!")
}
}
