Example usage for android.net.wifi WifiManager EXTRA_NEW_RSSI

Introduction

In this page you can find the example usage for android.net.wifi WifiManager EXTRA_NEW_RSSI.

Prototype

String EXTRA_NEW_RSSI

To view the source code for android.net.wifi WifiManager EXTRA_NEW_RSSI.

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Document

The lookup key for an int giving the new RSSI in dBm.

Usage

From source file:org.metawatch.manager.Monitors.java

private static void createWifiReceiver(final Context context) {
    if (wifiReceiver != null)
        return;/*from w w  w.  ja  v a2s.  c  o m*/
    WifiManager wm = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
    WifiInfo info = wm.getConnectionInfo();
    if (info != null)
        SignalData.wifiBars = 1 + WifiManager.calculateSignalLevel(info.getRssi(), 4);
    wifiReceiver = new BroadcastReceiver() {
        int wifiBars = 0;

        @Override
        public void onReceive(Context c, Intent intent) {
            String action = intent.getAction();
            if (action.equals(WifiManager.WIFI_STATE_CHANGED_ACTION)) {
                if (intent.getIntExtra(WifiManager.EXTRA_WIFI_STATE,
                        WifiManager.WIFI_STATE_UNKNOWN) != WifiManager.WIFI_STATE_ENABLED) {
                    wifiBars = 0;
                }
            } else if (action.equals(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION)) {
                if (!intent.getBooleanExtra(WifiManager.EXTRA_SUPPLICANT_CONNECTED, false)) {
                    wifiBars = 0;
                }
            } else if (action.equals(WifiManager.NETWORK_STATE_CHANGED_ACTION)) {
                NetworkInfo netInfo = intent.getParcelableExtra(WifiManager.EXTRA_NETWORK_INFO);
                if (netInfo.getState() != NetworkInfo.State.CONNECTED) {
                    wifiBars = 0;
                } else {
                    WifiInfo wifiInfo = intent.getParcelableExtra(WifiManager.EXTRA_WIFI_INFO);
                    if (wifiInfo == null) {
                        wifiBars = 0;
                    } else {
                        wifiBars = 1 + WifiManager.calculateSignalLevel(wifiInfo.getRssi(), 4);
                    }
                }
            } else if (action.equals(WifiManager.RSSI_CHANGED_ACTION)) {
                final int newRssi = intent.getIntExtra(WifiManager.EXTRA_NEW_RSSI, -200);
                wifiBars = 1 + WifiManager.calculateSignalLevel(newRssi, 4);
            }
            if (wifiBars != SignalData.wifiBars) {
                SignalData.wifiBars = wifiBars;
                Idle.updateIdle(context, true);
            }
        }
    };
    IntentFilter f = new IntentFilter();
    f.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION);
    f.addAction(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION);
    f.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);
    f.addAction(WifiManager.RSSI_CHANGED_ACTION);
    context.registerReceiver(wifiReceiver, f);
}

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