How to exchange data (objects) between different Android Activities?

Question

What is proper way to exchange data or objects between different Android Activities?

Welcome screen <-> Main Screen <-> Startup routines <-> Processing data <

Answer 1

There is an overview on the Android developer page:

http://developer.android.com/guide/appendix/faq/framework.html#3

To summarize it, it depends on what type of data your going to pass. But generally speaking, if possible, I would choose Intents, because they are fast and built for that.

Here is an example that explains how to pass data between activities using Intents.