代码如下：
注意priority high是关键
class YYCell: UITableViewCell {
fileprivate var tvHeightConstraint: Constraint? = nil
....
fileprivate func setupUI() {
textView.snp.makeConstraints { (make) in
make.top.equalToSupervi[......]
1、新建Target
2、实现UNNotificationServiceExtension
我这里用的是swift
//
// NotificationService.swift
// NotificationServiceExtension
//
// Created by Heyuan Li on 17/2/26.
// Copyright © 2017年 fenbi. All rights reserved.
//
import Us[......]
https://github.com/inloop/svg2android
https://github.com/a-student/SvgToVectorDrawableConverter[......]
关于如何配置postfix，只作sender用
How to Install and Configure Postfix as a Send-Only SMTP Server on Ubuntu 16.04 [......]