SignalStrengths.java 文件源码

public static double getFirstValid(SignalStrength signalStrength) {
    for (SignalMethod method : methods) {
        if (method.isExcluded()) continue;

        double level;
        try {
            level = method.getLevel(signalStrength);
        } catch (Exception e) {
            continue;
        }

        if (SignalUtils.isValidLevel(level) && level > 0)
            return level;
    }

    return 0;
}