android how to test network speed, network speed of the interfaceshown above

As stated, there is a floating window, shown above, the current 3/2G and wifi network speed, how to know the current network speed, ask the next!
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look at this http:/ / topic.csdn.net/u/20120709/10/689c5352-dff6-443b-9d99-988573591105.html? seed = 840442098 & r = 79069180 hope to have help you
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; currently know Android interior includes a similar broadcast:
ConnectivityManager class INET_CONDIATION_ACTION broadcasts.

but I did not test, speed test case in the end.

traffic statistics before, when people say online Linux kernel can be used to count traffic, I do not know whether it feasible?
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read once every one second, divided by the time, this approach sounds good soil ah, you should not like it
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android traffic firewall DEMO, welcome to download the study. http://dalvik.co.cc/html/7614525014.html
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Files with the Linux kernel traffic statistics? This way, I have read once every one second, and then based on the file size of the data divided by the time, so to achieve?
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generally everyone is how to achieve? Ask advice! !
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Upstairs buddy address provided can not open ah. . .
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Nobody knows? ? ? ?
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can ah

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mistake, is more than a middle INET_CONDITION_ACTION A, I said how can not search it!