Develop Reference

Enable 3G and WiFi Simultaneously

Does anyone know if its possible (programatically) to enable both 3G and WiFi to be used simultaneously, both receiving and sending packets?
I have seen various other questions on here, but with the Tethering ability inside Android now, I was wondering if this is a possibility? This has to be on a standard/stock device, and no modifications via root to the OS.
Thanks
Adam

I don't believe it is, as soon as wifi is turned on, 3g will automatically disconnect. As far as I know there is no way round it.

The only way you can achieve this is by using a APN name with the HttpConnection. This is possible in Java ME, Please visit this answer, however i have never tried it.
You need to check for the active connection, if not active first one the switch to the next connection.

public void shutup(){
SuDroid cmd = new SuDroid();
cmd.sh.runWaitFor("svc wifi enable");
cmd.sh.runWaitFor("svc data enable");
cmd.sh.runWaitFor("svc data prefer");
}
Using SuDroido

Android WifiLock WIFI_MODE_SCAN_ONLY not working

I'm trying to block the wifi connections. I want my application to turn on the wifi, but does not connect to any network that is already stored on the smartphone. But even after I use the SCAN_ONLY mode, he continues to connect to networks that already "know".
.....
wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
.....
wifiManager.setWifiEnabled(true);
WifiLock scanOnly = wifiManager.createWifiLock(WifiManager.WIFI_MODE_SCAN_ONLY, "scanOnly");
scanOnly.acquire();
Already in despair i tried to disconnect after to make sure that the state is WIFI_STATE_ENABLED wifi. That the app can not connect for a few seconds, but after some time it connects to a network in the same ...
wifiManager.setWifiEnabled(true);
....
WHEN (WIFI STATE == WIFI_STATE_ENABLED)
{wifiManager.disconnect();
scanOnly.acquire();}
Can someone help me?
Tks

WifiLock not for this. Only for "Allows an application to keep the Wi-Fi radio awake". This does not forbid anyone to connect to wifi. Only says "I want to be able to do at least this in sleep mode".
You have to do what you said Peanut above: get the list of all the stored networks and then disable wifi in BroadcastReceiver.
#Override
public void onReceive(Context c, Intent intent) {
saveWifiList(mainWifi.getScanResults());
unregisterReceiver(this);
mainWifi.setWifiEnabled(false);
showWifiList();
}

One way would be to get the list of all the stored networks and then disable them. You might want to store their state somewhere so you can restore the initial state after you're done.

WifiManager.startScan() - doesn't wake wifi if off, right?

The following will not turn wifi on, if the user has it turned off, right?:
WifiManager manager = (WifiManager)context.getSystemService(
Context.WIFI_SERVICE);
manager.startScan(); <-- !
I want to make sure the wifi isn't being turned on (if off) when the above is called,
Thanks

Yes, you are correct. The above code will not turn on wifi.
You can however use setWifiEnabled(true) to enable wi-fi access. You will need to add android.permission.CHANGE_WIFI_STATE to your manifest file.

How to get WIFI to turn on during POWERUP?

For a long time my device would always auto start WIFI now it does not. Could someone show how to turn wifi on automatically when device boots? Also if my app sleeps sometimes on recovery wifi is gone? Show how to test if wifi is active and if not active how to turn it on programatically. Thanks

Use wifi manager class and use the following code to test wifi connectivity
WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
if(wifi.isWifiEnabled())
{
// write your code
}else{
wifi.setWifiEnabled(true);
}

Android authentication gets in deadlock when using EAP with PEAP

I've spent several days trying to figure out what is wrong with my android phone's wifi at school. The school wifi is 802.1x EAP using PEAP..requires username, password.
I've had two Android phones, and have run many different ROMs on them so I know this isn't just a ROM specific problem. I'm currently running 2.2.1 on a Mytouch 3g fender ed. I don't have a data plan with my phone so I keep data off. I only use wifi.
The problem I have is that after I connect to the wifi, everything is fine for a while, but soon (perhaps 15 minutes to an hour later), I'll turn my phone on and when I see the wifi connection, it says Authenticating and it stays stuck there till I reset it. If I try to surf the Internet with normal HTTP it works fine, but if I try to run any apps that require wifi connection, they give an error saying there is a network connection (example would be Google Voice search which will say "Connection Problem"). Feeds can't update, gmail won't update, etc. After I reset the connection, the wifi works perfectly again. I am not sure why this happens. I think it has something to do with how the school's wifi is set up.
To make a quick fix to the problem however, I'm writing an app that will test if the connection is authenticating and reassociate the connection if it is. I'm running into problems though.
Here is the code to see if the wifi is authenticating and also some debug output:
private void checkWifi() {
WifiManager wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
WifiInfo info = wifi.getConnectionInfo();
SupplicantState state = info.getSupplicantState();
Log.d(getClass().getSimpleName(), state.toString());
NetworkInfo.DetailedState state2 = WifiInfo.getDetailedStateOf(info.getSupplicantState());
Log.d(getClass().getSimpleName(), state2.toString());
}
And here's the log output:
D/WifiCheckerService(24732): COMPLETED
D/WifiCheckerService(24732): OBTAINING_IPADDR
The log output is the same no matter if the wifi on the phone says Connected or Authenticating which means my program as of now cannot distinguish if it is in the funky "authentication" state or not. I need to be able to distinguish in order to be able to know when to reset the wifi. Any help is greatly appreciated.

Try this.
ConnectivityManager conn = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo nInfo = conn.getNetworkInfo(ConnectivityManager.TYPE_WIFI);
Log.d("MY CONNECTIVITY MANAGER: NETWORK.DETAILEDSTATE", nInfo.getDetailedState().toString());
Log.d("MY CONNECTIVITY MANAGER: NETWORK.STATE", nInfo.getState().toString());
Here's my Output (If you entered a wrong password while connecting).
D/MY CONNECTIVITY MANAGER: NETWORK.DETAILEDSTATE(24732):
AUTHENTICATING D/MY CONNECTIVITY MANAGER: NETWORK.STATE(24732):
CONNECTING
Second Output (While obtaining IP).
D/MY CONNECTIVITY MANAGER: NETWORK.DETAILEDSTATE(24732): OBTAINING_IPADDR
D/MY CONNECTIVITY MANAGER: NETWORK.STATE(24732): CONNECTED
Third Output (Successfully Connected).
D/MY CONNECTIVITY MANAGER: NETWORK.DETAILEDSTATE(24732): CONNECTED
D/MY CONNECTIVITY MANAGER: NETWORK.STATE(24732): CONNECTED
4th Output (If you entered wrong password and failed to connect).
D/MY CONNECTIVITY MANAGER: NETWORK.DETAILEDSTATE(24732): DISCONNECTED
D/MY CONNECTIVITY MANAGER: NETWORK.STATE(24732): DISCONNECTED
5th Output (If WIFI is IDLE and DISCONNECTED).
D/MY CONNECTIVITY MANAGER: NETWORK.DETAILEDSTATE(24732): IDLE
D/MY CONNECTIVITY MANAGER: NETWORK.STATE(24732): DISCONNECTED
// hope it helps