How to capture app traffic on Android

Question

I'm trying to capture traffic from an app on an Android phone and although I've set the proxy on the phone and can capture all other internet traffic coming from the phone (using Charles Proxy), I can't see any traffic for this one app.

How is this done, and how can I capture the traffic?

UPDATE:

• If you need help setting up a wifi hotspot from your computer, so you can connect your phone to it and Wireshark the traffic, just look at the following link for directions:
  http://www.wi-fiplanet.com/tutorials/article.php/3849841/How-to-Create-Wireless-Hosted-Networks-in-Windows-7.htm

• If you want help decompiling an IOS app to assembly, look at this
  link: http://www.infointox.net/?tag=arm

• If you want a better Dex to Java decompiler than dex2jar, check this out: https://github.com/skylot/jadx

Answer 1

There're several ways:

1. Connect your phone to your internal wifi access point (before connecting check advanced options and set a manual proxy).. Note: this method do not work for all network data.. some connections ignore this setting.
2. (works on rooted phones only) Install 'Shark for Root' application on your device... it will capture ALL traffic.. it will generated dump files that can be analized on your PC using Wireshark software
3. The best way: Setup your PC as a wifi access point and make your android device to use this wifi connection, then sniff the traffic using the same Wireshark application.