[1/2] Call stats

There's not much to say here.
Yes, this is dat call stats.
You can view your call stats in a pie chart,
and there's also a filter.
Thanks to CyanogenMod for the original implementation.

[1/2] 通话数据

这里没啥可多说的.
是的, 就是那个通话数据.
你可以在一个饼图中查看你的通话数据,
同时还带有筛选过滤功能.
感谢CyanogenMod原创实现此特性.

Here is the utility method part.
这里是utility method部分.

[2/2] in platform_packages_apps_Dialer