Android: How do I use the Gson converter in RetroFit?

Add compile 'com.squareup.retrofit:converter-gson:2.0.0-beta2' to your build.gradlefile and get the dependency resolved or add corresponding jars to your bulid path.

then use GsonConverterFactory.create() to get the Converter Factory 

Try this with retrofit 2:

compile 'com.squareup.retrofit2:converter-gson:2.0.0-beta4'