Android手机中紧急号码的定制

PhoneNumberUtils.java 文件(frameworks\base\telephony\java\android\telephony)

/**

     * isEmergencyNumber: checks a given number against the list of

     *   emergency numbers provided by the RIL and SIM card.

     *

     * @param number the number to look up.

     * @return if the number is in the list of emergency numbers

     * listed in the ril / sim, then return true, otherwise false.

     */

    public static boolean isEmergencyNumber(String number) {

        // If the number passed in is null, just return false:

        if (number == null) return false;

        // Strip the separators from the number before comparing it

        // to the list.

        number = extractNetworkPortionAlt(number);

        // retrieve the list of emergency numbers

        // check read-write ecclist property first

        String numbers = SystemProperties.get("ril.ecclist");

        if (TextUtils.isEmpty(numbers)) {

            // then read-only ecclist property since old RIL only uses this

            numbers = SystemProperties.get("ro.ril.ecclist");

        }

        if (!TextUtils.isEmpty(numbers)) {

            // searches through the comma-separated list for a match,

            // return true if one is found.

            for (String emergencyNum : numbers.split(",")) {

                if (number.startsWith(emergencyNum)) {

                    return true;

                }

            }

            // no matches found against the list!

            return false;

        }

        //no ecclist system property, so use our own list.