On Fri, Jul 8, 2011 at 6:54 AM, Ellen <ellen...@hotmail.com> wrote: > Hi, > > When a device connect to a PC through USB, how Android could get this > envent whatever the connection mode is? > > I searched a flag "Usb.ACTION_USB_STATE", but it seems my application > couldn't identify it. (SDK 2.2 API level 8). > > Isn't this only available in API level 9 and above? If so you'll have to run on those.
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