app/lib/paegs/system_information_page/system_information_page.dart

import 'dart:convert';

import 'package:bbyyy/beans/system_information_bean_entity.dart';
import 'package:bbyyy/my_tools/my_colors.dart';
import 'package:bbyyy/my_tools/my_cookie.dart';
import 'package:bbyyy/my_tools/my_tools.dart';
import 'package:bbyyy/my_tools/my_views.dart';
import 'package:flutter/material.dart';

class SystemInformationPage extends StatefulWidget {
  @override
  _SystemInformationPageState createState() => _SystemInformationPageState();
}

class _SystemInformationPageState extends State<SystemInformationPage> {
  List<SystemInformationBeanEntity> sysMsg = [];

  @override
  void initState() {
    // TODO: implement initState
    super.initState();
    String s = MyCookie().prefs.getString('${MyCookie().getUID()}系统消息');
    List sL = json.decode(s);
    sL.forEach((element) {
      SystemInformationBeanEntity entity = SystemInformationBeanEntity()
          .fromJson(json.decode(json.encode(element)));
      sysMsg.add(entity);
    });
    setState(() {});
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: MyColors.cE7E7E7,
      body: Column(
        children: [
          MyViews().myAppBar('系统消息', context, []),
          Container(
            height: 10,
            color: MyColors.cE7E7E7,
          ),
          Expanded(
            child: ListView.builder(
              itemBuilder: (BuildContext context, int index) {
                return GestureDetector(
                  onTap: () {
                    MyTools().toPage(context,
                        SystemMessageDetailsPage(sysMsg[index]), (then) {});
                  },
                  behavior: HitTestBehavior.translucent,
                  child: Column(
                    children: [
                      Container(
                        color: Colors.white,
                        child: Column(
                          children: [
                            Container(
                              height: 40,
                              child: Text(
                                '${sysMsg[index].content.content}',
                                maxLines: 2,
                                overflow: TextOverflow.ellipsis,
                                softWrap: true,
                                style: TextStyle(
                                    color: MyColors.c333333, fontSize: 14),
                              ),
                              alignment: Alignment.topLeft,
                            ),
                            Padding(
                              padding: const EdgeInsets.all(8.0),
                              child: Row(
                                children: [
                                  MyViews()
                                      .myText('发布时间', MyColors.c666666, 12),
                                  MyViews().myText(
                                      sysMsg[index].content.startTime,
                                      MyColors.c666666,
                                      12),
                                ],
                                mainAxisAlignment:
                                    MainAxisAlignment.spaceBetween,
                              ),
                            )
                          ],
                        ),
                        alignment: Alignment.centerLeft,
                        padding: EdgeInsets.all(10),
                      ),
                      Container(
                        height: 0.5,
                        color: MyColors.cF7F7F7,
                      )
                    ],
                  ),
                );
              },
              itemCount: sysMsg.length,
              padding: EdgeInsets.all(0),
            ),
          )
        ],
      ),
    );
  }
}

class SystemMessageDetailsPage extends StatefulWidget {
  SystemInformationBeanEntity sysMsg;

  SystemMessageDetailsPage(this.sysMsg);

  @override
  _SystemMessageDetailsPageState createState() =>
      _SystemMessageDetailsPageState();
}

class _SystemMessageDetailsPageState extends State<SystemMessageDetailsPage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Column(
        children: [
          MyViews().myAppBar('系统消息详情', context, []),
          SingleChildScrollView(
            child: Expanded(
              child: Column(
                children: [
                  Container(
                    child: Text(
                      widget.sysMsg.content.content.split('】')[0].substring(1),
                      style: TextStyle(color: MyColors.c333333, fontSize: 25),
                    ),
                    alignment: Alignment.center,
                    margin: EdgeInsets.only(top: 20),
                  ),
                  Container(
                    child: Text(
                      widget.sysMsg.content.startTime,
                      style: TextStyle(color: MyColors.c333333, fontSize: 12),
                    ),
                    alignment: Alignment.centerRight,
                    margin: EdgeInsets.only(right: 20, top: 10),
                  ),
                  Container(
                    margin: EdgeInsets.all(20),
                    child: Text(
                      widget.sysMsg.content.content.split('】')[1],
                      style: TextStyle(color: MyColors.c333333, fontSize: 20),
                    ),
                    alignment: Alignment.topLeft,
                  ),
                ],
              ),
            ),
          ),
        ],
      ),
    );
  }
}