[SOLVED] Gradle build error while building Qt app for android using androiddeployqt

Issue

I have a Qt app for android which I command line building it using a shell script. I want to use gradle. So I am using the following command for the install step.

androiddeployqt --sign mykey.keystore --storepass mypassword --output android-build --verbose --gradle --input MyApp/myapplib.so-deployment-settings.json

I had trouble using gradle 2.2.1. Hence, I updated my gradle wrapper by downloading gradle 3.1. But while running the command gradle still seems to be trying to download 2.2.1 and gives the following error.

Pregenerating entry list for assets file engine.
Downloading https://services.gradle.org/distributions/gradle-2.2.1-all.zip

Exception in thread "main" java.net.UnknownHostException: services.gradle.org
    at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:184)
    at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.net.Socket.connect(Socket.java:589)
    at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:668)
    at sun.security.ssl.BaseSSLSocketImpl.connect(BaseSSLSocketImpl.java:173)
    at sun.net.NetworkClient.doConnect(NetworkClient.java:180)
    at sun.net.www.http.HttpClient.openServer(HttpClient.java:432)
    at sun.net.www.http.HttpClient.openServer(HttpClient.java:527)
    at sun.net.www.protocol.https.HttpsClient.<init>(HttpsClient.java:264)
    at sun.net.www.protocol.https.HttpsClient.New(HttpsClient.java:367)
    at     sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Abs    tractDelegateHttpsURLConnection.java:200)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1124)
    at sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:999)
    at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(AbstractDelegateHttpsURLConnection.java:177)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1513)
    at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1441)
    at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(HttpsURLConnectionImpl.java:254)
    at org.gradle.wrapper.Download.downloadInternal(Download.java:58)
    at org.gradle.wrapper.Download.download(Download.java:44)
    at org.gradle.wrapper.Install$1.call(Install.java:61)
    at org.gradle.wrapper.Install$1.call(Install.java:48)
    at org.gradle.wrapper.ExclusiveFileAccessManager.access(ExclusiveFileAccessManager.java:69)
    at org.gradle.wrapper.Install.createDist(Install.java:48)
    at org.gradle.wrapper.WrapperExecutor.execute(WrapperExecutor.java:107)
    at org.gradle.wrapper.GradleWrapperMain.main(GradleWrapperMain.java:61)
Building the android package failed!

Can someone please point out how can I get rid of this error & build my Qt app using gradle ?

Solution

This is a network issue or a proxy issue. If gradle is not able to get through the proxy setting then create a gradle.settings in ~/.gradle or your own defined GRADLE_USER_HOME in PATH.

systemProp.http.proxyHost=proxy
systemProp.http.proxyPort=port
systemProp.http.proxyUser=user
systemProp.http.proxyPassword=password
systemProp.http.nonProxyHosts=*.nonproxyrepos.com|localhost

Answered By – TheWaterProgrammer

Answer Checked By – Candace Johnson (BugsFixing Volunteer)