当我尝试使用TrafficStats类检索的流量数据,
When i try to retrieve traffic data using TrafficStats class,
TrafficStats.getTotalRxBytes()
和 TrafficStats.getTotalTxBytes()
函数总是返回-1,即使我使用浏览器加载一些网页。
TrafficStats.getTotalRxBytes()
and TrafficStats.getTotalTxBytes()
functions always return -1 even if i use the browser to load some web pages.
我知道一些论坛,-1表示该设备不支持的行动。我用了WVGA,NEXUS ONE和Nexus S和问题仍然存在。
I knew from some forums that -1 mean that the device don't support the action. I used WVGA, NEXUS ONE and NEXUS S and the problem persists.
感谢你。
可能无法正常工作。尝试真正的设备上。
If you are using emulator it might not work. Try on a real device.