With Android 2.2 you can route data over the 3G connection explicitly while still using WiFi. The feature exists in Android 2.1 also but is *broken* as the high-priority 3G data connection is torn down incorrectly almost directly.
Look into the ConnectivtyManager#startUsingNetworkFeature(TYPE_MOBILE, ENABLE_HIPRI) combined with a BroadcastReceiver for the ConnectivityManager.CONNECTIVITY_ACTION. After the HIPRI connection is made you need to explicitly route the data using ConnectivityManager#requestRouteToHost(TYPE_MOBILE_HIPRI, int). On 13 Juli, 20:07, Mark Murphy <[email protected]> wrote: > On Tue, Jul 13, 2010 at 2:01 PM, RickB <[email protected]> wrote: > > We have an application where we'd like to use the Wifi connection on a > > local network (intranet) with no Internet connectivity, and use the 3G > > connection simultaneously as the data connection to the internet. > > Like the WiFi hotspot built into Android 2.2. > > > To summarize: > > > - We need to connect to two distinct networks at the same time > > - We need data traffic to be properly routed to the appropriate > > network based on its IP address > > - We need both radios (Wifi and 3G) on and active > > > This can easily be done on the iPhone, but not sure if it can be done > > on the Android. Any info/insights welcomed. > > AFAIK, at the SDK level, Android only supports one active connection > at a time. Custom firmware can clearly arrange for multi-radio > support, as the WiFi hotspot in 2.2 demonstrates. > > -- > Mark Murphy (a Commons > Guy)http://commonsware.com|http://github.com/commonsguyhttp://commonsware.com/blog|http://twitter.com/commonsguy > > Android 2.2 Programming Books:http://commonsware.com/books -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
