LinkedIn recently launched an official Android SDK which facilitates LinkedIn integration.
https://developer.linkedin.com/docs/android-sdk
but the documentation not explaining much for setting previously acquired consumer key and consumer secret which getting while app registration process.any one working around it?
The process of defining your package and hash name within your LinkedIn application configuration, as described in the Getting Started documentation (https://developer.linkedin.com/docs/android-sdk#application) is all that is required for LinkedIn to map your mobile application to your particular LinkedIn application.
If you've done that correctly, there's no need to worry about your consumer key and secret values.