Android WiFi Monitor

package com.paad.wifi; import java.util.List; import com.paad.util.NetworkUtil; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.net.wifi.ScanResult; import android.net.wifi.WifiInfo; import android.net.wifi.WifiManager; import android.util.Log; import android.widget.Toast; public class WiFiBroadcastReceiver extends BroadcastReceiver { private Context context = null; private WifiManager wifi = null; public WiFiBroadcastReceiver(Context context, WifiManager wifi) { this.context = context; this.wifi = wifi; } @Override public void onReceive(Context context, Intent intent) { if (WifiManager.SCAN_RESULTS_AVAILABLE_ACTION.equals(intent.getAction())) { findBestSignalConnection(); } if (WifiManager.RSSI_CHANGED_ACTION.equals(intent.getAction())) { findActiveConnection(); } } private void findBestSignalConnection() { List<ScanResult> results = wifi.getScanResults(); ScanResult bestSignal = null; for (ScanResult result : results) { if (bestSignal == null || WifiManager.compareSignalLevel(bestSignal.level, result.level) < 0) bestSignal = result; } String connSummary = String.format("%s networks found. %s is " + "the strongest.", results.size(), bestSignal.SSID); Toast.makeText(context, connSummary, Toast.LENGTH_LONG).show(); Log.d(NetworkUtil.TAG, connSummary); } private void findActiveConnection() { WifiInfo info = wifi.getConnectionInfo(); if (info.getBSSID() != null) { String ssid = info.getSSID(); String units = WifiInfo.LINK_SPEED_UNITS; int speed = info.getLinkSpeed(); int strength = WifiManager.calculateSignalLevel(info.getRssi(), 5); String ipAddress = NetworkUtil.intToIp(info.getIpAddress()); String connSummary = String.format("Connected to %s at %s%s. " + "Strength %s/5. " + "IP %s", ssid, speed, units, strength, ipAddress); Toast.makeText(context, connSummary, Toast.LENGTH_LONG).show(); Log.d(NetworkUtil.TAG, connSummary); } } }