Steps:
1. Download the whole nlp from the site.
2. Copy stanford-postagger.jar file and paste it in the app>libs folder
3. Right click on it and click add to library.
4. Now write the example code available in the net with class tagText{} and in MainActivity.java
5. import library import import edu.stanford.nlp.tagger.maxent.MaxentTagger;
This video may help.
Update: It is giving errors with android.