I think you are looking for BroadcastReceiver (More info @
http://code.google.com/android/reference/android/content/BroadcastReceiver.html
) . Try something like this in your application's onCreate() ...
// -- Sample WiFi implementation
IntentFilter i = new IntentFilter();
i.addAction
(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION);
registerReceiver(new BroadcastReceiver(){
public void onReceive(Context c, Intent i){
// Code to execute when SCAN_RESULTS_AVAILABLE_ACTION
event
occurs
WifiManager w = (WifiManager) c.getSystemService
(Context.WIFI_SERVICE);
w.getScanResults(); // Returns a <list> of scanResults
}
}, i );
// Now you can call this and it should execute the
broadcastReceiver's onReceive()
WifiManager wm = (WifiManager) getSystemService
(Context.WIFI_SERVICE);
boolean a = wm.startScan();
// -- End Wifi Sample
NOTE: I don't think wiFi stuff works in the emulator, and you must set
the correct Wifi permissions in your Application's manifest for it to
work on an actual device.
-K
On Dec 9, 2:44 pm, Ian <[EMAIL PROTECTED]> wrote:
> Hi everyone,
>
> I want to write an app that scans for WiFi networks and displays their
> signal strengths, continually updating. It seems like a no-brainer to
> use android.net.wifi.WifiManager.startScan() and get the results; but
> how?
>
> startScan() says: "The availability of the results is made known later
> by means of an asynchronous event sent on completion of the scan". How
> do I get this asynchronous event? I can't see any API to register a
> listener.
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