java.lang.NoSuchMethodError: org.apache.http.client.entity.UrlEncodedFormEntity.

[paulisme]

I'm using Gradle in Android Studio to pull in pushover4j but get this runtime error when calling pushMessage:

java.lang.NoSuchMethodError: org.apache.http.client.entity.UrlEncodedFormEntity.

Any ideas?

[sps]

I have a hunch that you have multiple versions of apache httpclient on your classpath.
This project currently relies on org.apache.httpcomponents:httpclient 4.2.1