如何将Flutter Date转换为TimeStamp？

Question

我需要向REST API发送一个post请求，其中包含Date值。但是，REST API和MySQL接受Timestamp。以下是我如何准备当前日期

User user = User(
      name: nameTxtController.text,
      email: emailTxtController.text,
      phone: mobileTxtController.text,
      userLanguage: userLanguage,
      userRights: userRight,
      lastUpdated: DateTime.now(),
      dateCreated: DateTime.now()

    );

如何将其转换为Timestamp？

Answer 1

请执行以下操作

User user = User(
      name: nameTxtController.text,
      email: emailTxtController.text,
      phone: mobileTxtController.text,
      userLanguage: userLanguage,
      userRights: userRight,
      lastUpdated: DateTime.now().millisecondsSinceEpoch,
      dateCreated: DateTime.now().millisecondsSinceEpoch

    );

为了这个工作，你的user.lastUpdated和user.dateCreated应该是你的模型中的int类型（bean，如果你来自Java背景）类

Answer 2

1）在pubspec.yaml上

使用上一版本导入cloud_firestore插件

https://pub.dartlang.org/packages/cloud_firestore

dependencies:
 flutter:
  sdk: flutter

 # The following adds the Cupertino Icons font to your application.
 # Use with the CupertinoIcons class for iOS style icons.
 cupertino_icons: ^0.1.2`enter code here`

 cloud_firestore: ^0.9.13 //import this, with last version

2）在你的file.dart上

import 'package:cloud_firestore/cloud_firestore.dart';

3）DateTime到TimeStamp / TimeStamp到DateTime

DateTime currentPhoneDate = DateTime.now(); //DateTime

Timestamp myTimeStamp = Timestamp.fromDate(currentPhoneDate); //To TimeStamp

DateTime myDateTime = myTimeStamp.toDate(); // TimeStamp to DateTime

print("current phone data is: $currentPhoneDate");
print("current phone data is: $myDateTime");

4）控制台

I/flutter (15177): current phone data is: 2019-04-17 11:28:26.953530
I/flutter (15177): current phone data is: 2019-04-17 11:28:26.953530

用你的代码

User user = User(
  name: nameTxtController.text,
  email: emailTxtController.text,
  phone: mobileTxtController.text,
  userLanguage: userLanguage,
  userRights: userRight,
  lastUpdated: myTimeStamp //here
  dateCreated: myTimeStamp //here
);