Quiet Hours: Add 4 state (off, timed inactive, timed active and forced on) support

         */

        public static final String MVNO_ROAMING = "mvno_roaming";

        /**

         * Whether to enforce quiet hours regardless of the timer.

         * @hide

         */

        public static final String QUIET_HOURS_FORCED = "quiet_hours_forced";

        /**

         * Whether to enable quiet hours.

         * @hide

import java.util.Calendar;

public class QuietHoursUtils {

    public static boolean inQuietHours(Context context, String option) {

        if (Settings.System.getInt(context.getContentResolver(),

                Settings.System.QUIET_HOURS_FORCED, 0) != 0) {

            // If Quiet hours is forced return immediately

            return true;

        }

        // Check if we are in timed Quiet hours mode

        boolean quietHoursEnabled = Settings.System.getInt(context.getContentResolver(),

                Settings.System.QUIET_HOURS_ENABLED, 0) != 0;

        boolean quietHoursOption = Settings.System.getInt(context.getContentResolver(),

                option, 0) != 0;

        if (quietHoursEnabled && quietHoursOption) {

            int quietHoursStart = Settings.System.getInt(context.getContentResolver(),

                    Settings.System.QUIET_HOURS_START, 0);

            int quietHoursEnd = Settings.System.getInt(context.getContentResolver(),

                    Settings.System.QUIET_HOURS_END, 0);

        boolean quietHoursOption = Settings.System.getInt(context.getContentResolver(),

                option, 0) != 0;

        if (quietHoursEnabled && quietHoursOption && (quietHoursStart != quietHoursEnd)) {

            return inQuietHours(quietHoursStart, quietHoursEnd);

        }

        return false;

    }

    public static boolean inQuietHours(int quietHoursStart, int quietHoursEnd) {

        if (quietHoursStart != quietHoursEnd) {

            // Get the date in "quiet hours" format.

                Calendar calendar = Calendar.getInstance();

                int minutes = calendar.get(Calendar.HOUR_OF_DAY) * 60

                                           + calendar.get(Calendar.MINUTE);

            Calendar cal = Calendar.getInstance();

            int minutes = cal.get(Calendar.HOUR_OF_DAY) * 60 + cal.get(Calendar.MINUTE);

            if (quietHoursEnd < quietHoursStart) {

                // Starts at night, ends in the morning.

                return (minutes > quietHoursStart) || (minutes < quietHoursEnd);

            } else {

                // Starts in the morning, ends at night.

                return (minutes > quietHoursStart) && (minutes < quietHoursEnd);

            }

        }