Android - communicating between two devices

Question

What is the best way for an Android app installed on two devices to communicate with each other? Can the devices connect directly without using text messaging?

Answer 1

ShortAnswer: Yes

Data can be sent directly.

In order of range: 1 Bluetooth 2 wifidirect 3 maybe.. GSM hardware direct?

After that, options again in range order: 4 tether or network 5 Internet

Answer 2

The android NSD API is meant to do the exact same thing you are trying to achieve! The example bundled with SDK is self explanatory!

please check:

Android NSD API example