Question

I need to know how could I find if there are any access points available.

Answer 1

Use the WifiManager system manager from your activity’s context:

(WifiManager) getSystemService(Context.WIFI_SERVICE);

startScan kicks off a new scan; when it finishes the system broadcasts an intent for SCAN_RESULTS_AVAILABLE_ACTION. You can then call getScanResults to get the list of ScanResult objects, including SSIDs, frequencies, etc. Google around for examples, like this one.