Count application traffic in Android 2.2

A new class android.net.TrafficStats has appeared in Froyo with the function getUidRxBytes (int uid) and getUidTxBytes (int uid) which allows for each application to get the amount of sent / received traffic. Immediately the idea was born to write a simple program, it seems to me that the Google people meant this when they did this function. The program, when called and once an hour, updates the values ​​so as not to lose data during a reboot, there is also an update button for paranoids.

A very useful and simple program that shows how much traffic various programs use. Shows which applications use the most traffic.







Available only on Android 2.2, by the way, on which phones have the firmware already been released?