Adding chat features and VOIP calls?

Question

How to create chat-text / VOIP calling application using Android sdk? What are the available apis and sources?

Answer 1

This is part of the latest version of Android 2.3. See

http://developer.android.com/sdk/android-2.3.html

http://developer.android.com/resources/samples/SipDemo/index.html

Answer 2

If you want to develop for previous versions 2.3 (or just your own VoIP engine), you use the AudioTrack and AudioRecord APIs for streaming recording / playback.

If the question were more specific, I could provide more detailed answers.

Answer 3

check out http://code.google.com/p/csipsimple/ It is based on pjsip (http://www.pjsip.org).