This program reads your SMS and tells you the overall sentiment, positive or negative, of the messages. It displays the postitive and negative words it finds based on predefined vocabulary of the sentiments.
You need to got to "Settings-> Apps" in your phone and select "TestApp", which is the name of the app. Then, you need to go to "Permissions" and give sms and storage permissions
app-debug.apk is the final product, which I have uploaded.