DeviceNetworkStatus.java 文件源码

@Override
public void onSignalStrengthsChanged(SignalStrength signalStrength) {
    super.onSignalStrengthsChanged(signalStrength);
    if (signalStrength.isGsm()) {
        if (signalStrength.getGsmSignalStrength() != 99) {
            // this is the equation used to convert a valid gsm signal to dbm.
            setCellSignalStrength(signalStrength.getGsmSignalStrength() * 2 - 113);
        } else {
            setCellSignalStrength(signalStrength.getGsmSignalStrength());
        }
    } else {
        setCellSignalStrength(signalStrength.getCdmaDbm());
    }
}