I have a sample from Gaelyk (called Bloogie) and it is using gradlew.
I am behind a proxy.
I\'ve read gradle docs and found this:
gradle.properties>
If you need https access behind a proxy, please consider defining also the same set of properties for systemProp.https.
systemProp.https.proxyHost=www.somehost.org systemProp.https.proxyPort=8080
See Can't build Android app using crashlytics behind VPN and proxy for more information.