App data usage

```
I'm not sure that this level of granularity is available from iptools, but the
amount of data that passed thru the firewall for each application would be very
handy, and would fit in well with the UI.

From the android api, per application data is not separated into wifi and 3G,
nor are wifi and 3G apis separated into applications. Whilst is should be
straightforward to poll both apis and figure out what belongs to what, it seems
that the firewall is the place get the data directly from the os.

Jake
```

Original issue reported on code.google.com by `jakelewi...@gmail.com` on 7 Oct 2010 at 5:22

Start by checking whether iptools exposes per-application firewall byte counters, then compare those results with the Android APIs for application, Wi-Fi, and 3G usage described in the issue. Review how the existing UI represents network data. Done means determining a supported data source and displaying each application's traffic amount in the UI, or documenting that the platform cannot provide it.

Written by the indexing model from the issue text.