NetworkIconData.java 文件源码

@Override
public void onSignalStrengthsChanged(SignalStrength signalStrength) {
    super.onSignalStrengthsChanged(signalStrength);

    NetworkIconData icon = null;
    if (reference != null) icon = reference.get();

    if (icon != null && icon.isRegistered)
        icon.onDrawableUpdate((int) Math.round(SignalStrengths.getFirstValid(signalStrength)));
}