最近做的项目中，需要一直运行service，可是，360一旦清理缓存就把我的service给kill掉了，在网上查了好多方法都不管用，最后终于找到一个：

private void initNotify() {
    Intent notificationIntent = new Intent(this, LockActivity.class);
    PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,
        notificationIntent, 0);
    Notification notification = new Notification(); 
    notification.setLatestEventInfo(this, "LockAppsService", "prevent service to be killed",
        pendingIntent);
    startForeground(1, notification);
  }

这样就能显示一个前台服务