Issue with WifiManager.calculateSignalLevel(RSSI, 5)

Question

I am trying to use the Wifimanager to calculate the Signal Level of the access points found during a scan.

I am using the following method:

WifiManager.calcu

Answer 1

thanks to this question I could prevent problem on lower API versions then the one I'm targetting. So I made this so you can use it on any platform version.

public int getWifiSignalStrength(Context context){
    int MIN_RSSI        = -100;
    int MAX_RSSI        = -55;  
    int levels          = 101;
    WifiManager wifi    = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);            
    WifiInfo info       = wifi.getConnectionInfo(); 
    int rssi            = info.getRssi();

    if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.ICE_CREAM_SANDWICH){
        return WifiManager.calculateSignalLevel(info.getRssi(), levels);
    } else {             
        // this is the code since 4.0.1
        if (rssi <= MIN_RSSI) {
            return 0;
        } else if (rssi >= MAX_RSSI) {
            return levels - 1;
        } else {
            float inputRange = (MAX_RSSI - MIN_RSSI);
            float outputRange = (levels - 1);
            return (int)((float)(rssi - MIN_RSSI) * outputRange / inputRange);
        }
    }
}//end method