//清除通知

        public static void cleanAllNotification() {

            NotificationManager mn= (NotificationManager) MainActivity.getContext().getSystemService(NOTIFICATION_SERVICE);

            mn.cancelAll();

            if (timer != null) {

                timer.cancel();

                timer = null;

            }

        }

        //添加通知

        public static void addNotification(int delayTime,String tickerText,String contentTitle,String contentText)

        {

            Intent intent = new Intent(MainActivity.getContext(), PushService.class);

            intent.putExtra("delayTime", delayTime);

            intent.putExtra("tickerText", tickerText);

            intent.putExtra("contentTitle", contentTitle);

            intent.putExtra("contentText", contentText);

            MainActivity.getContext().startService(intent);

        }