/**

     * 判断服务是否还活着

     *

     * @param serviceName

     * @return

     */

    public static boolean isRuningService(Context context, String serviceName) {

        // 校验服务是否还活着

        ActivityManager am = (ActivityManager) context

                .getSystemService(Context.ACTIVITY_SERVICE);

        List<RunningServiceInfo> infos = am.getRunningServices(100);

        for (RunningServiceInfo info : infos) {

            String name = info.service.getClassName();

            if (serviceName.equals(name)) {

                return true;

            }

        }

        return false;

    }