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  1. PO
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    <p>Please try below one. Working well, but not tested properly. Please optimise the code yourself.</p> <pre><code>public class MainActivity extends Activity { WifiManager mainWifi; WifiReceiver receiverWifi; StringBuilder sb = new StringBuilder(); private final Handler handler = new Handler(); @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); mainWifi = (WifiManager) getSystemService(Context.WIFI_SERVICE); receiverWifi = new WifiReceiver(); registerReceiver(receiverWifi, new IntentFilter( WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)); if (mainWifi.isWifiEnabled() == false) { mainWifi.setWifiEnabled(true); } doInback(); } public void doInback() { handler.postDelayed(new Runnable() { @Override public void run() { // TODO Auto-generated method stub mainWifi = (WifiManager) getSystemService(Context.WIFI_SERVICE); if (receiveWifi == null) receiverWifi = new WifiReceiver(); registerReceiver(receiverWifi, new IntentFilter( WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)); mainWifi.startScan(); doInback(); } }, 1000); } public boolean onCreateOptionsMenu(Menu menu) { menu.add(0, 0, 0, "Refresh"); return super.onCreateOptionsMenu(menu); } public boolean onMenuItemSelected(int featureId, MenuItem item) { mainWifi.startScan(); return super.onMenuItemSelected(featureId, item); } @Override protected void onPause() { unregisterReceiver(receiverWifi); super.onPause(); } @Override protected void onResume() { registerReceiver(receiverWifi, new IntentFilter( WifiManager.SCAN_RESULTS_AVAILABLE_ACTION)); super.onResume(); } class WifiReceiver extends BroadcastReceiver { public void onReceive(Context c, Intent intent) { ArrayList&lt;String&gt; connections = new ArrayList&lt;String&gt;(); ArrayList&lt;Float&gt; Signal_Strenth = new ArrayList&lt;Float&gt;(); sb = new StringBuilder(); List&lt;ScanResult&gt; wifiList; wifiList = mainWifi.getScanResults(); for (int i = 0; i &lt; wifiList.size(); i++) { connections.add(wifiList.get(i).SSID); } } } } </code></pre>
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    1. POAndroid: Scanning Wifi Network + Selectable list
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    1. USAlex Chengalan
    1. USAlex Chengalan
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    1. POAndroid: Scanning Wifi Network + Selectable list
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    1. COThanks for the reply, it looks like very nice, but there is some kind of error in the class "WifiReceiver": The type TestPreprationActivity.WifiReceiver must implement the inherited abstract method BroadcastReceiver.onReceive(Context, Intent)
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      1. USIgnacio Alorre
    2. COyes there is, u can see `public void onReceive(Context c, Intent intent)` method inside the `WifiReceiver`..
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      1. USAlex Chengalan
    3. COedit: problem solved. Thank you very much, the code is really useful
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      1. USIgnacio Alorre
 

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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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