huixiang_app/lib/message/main_message_page.dart

import 'package:flutter/material.dart';
import 'package:huixiang/generated/l10n.dart';
import 'package:huixiang/message/mine_message.dart';
import 'package:huixiang/message/real_time_info_page.dart';
import 'package:huixiang/view_widget/my_tab.dart';
import 'package:huixiang/view_widget/round_button.dart';

class MainMessagePage extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return _MainMessagePage();
  }
}

class _MainMessagePage extends State<MainMessagePage>
    with SingleTickerProviderStateMixin {
  var tabcontroller;

  @override
  void initState() {
    super.initState();
    if (tabcontroller == null)
      tabcontroller = TabController(length: 2, vsync: this);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Color(0xFFFFFFFF),
      appBar: AppBar(
        backgroundColor: Color(0xFFFFFFFF),
        elevation: 0,
        centerTitle: false,
        leading: GestureDetector(
          onTap: () {
            Navigator.of(context).pop();
          },
          child: Container(
            alignment: Alignment.centerRight,
            margin: EdgeInsets.only(left: 10),
            padding: EdgeInsets.all(6),
            child: Icon(
              Icons.arrow_back_ios,
              color: Colors.black,
              size: 24,
            ),
          ),
        ),
        titleSpacing: 2,
        leadingWidth: 56,
        automaticallyImplyLeading: true,
        actions: [rightAction()],
        title: Text(
          S.of(context).xiaoxi,
          style: TextStyle(color: Colors.black),
        ),
        bottom: PreferredSize(
          preferredSize: Size(double.infinity, 38),
          child: TabBar(
              controller: tabcontroller,
              isScrollable: true,
              indicatorWeight: 2,
              indicatorColor: Color(0xFF39B54A),
              labelPadding: EdgeInsets.only(left: 25, right: 25),
              indicatorPadding: EdgeInsets.only(left: 25, right: 25, top: 3),
              unselectedLabelStyle:
                  TextStyle(fontSize: 16, fontWeight: FontWeight.normal),
              labelStyle: TextStyle(
                  color: Colors.black,
                  fontSize: 16,
                  fontWeight: FontWeight.bold),
              labelColor: Colors.black,
              tabs: [
                MyTab(text: S.of(context).huodongzixun),
                MyTab(
                  text: S.of(context).wodexiaoxi,
                ),
              ]),
        ),
      ),
      body: TabBarView(
        children: [
          RealTimeInfoPage(),
          MineMessagePage(_status, (status) {
            setState(() {
              _bgStatus = status;
            });
          })
        ],
        controller: tabcontroller,
      ),
    );
  }

  var _status = 0;
  var _bgStatus = false;

  Widget rightAction() {
    if (_status == 0) {
      return Container(
        margin: EdgeInsets.only(right: 17),
        child: GestureDetector(
          onTap: () {
            setState(() {
              _status = (_status + 1) % 2;
            });
          },
          child: Image.asset(
            "assets/image/icon_delete.png",
            width: 24,
            height: 24,
          ),
        ),
      );
    } else {
      return GestureDetector(
        onTap: () {
          setState(() {
            _status = (_status + 1) % 2;
          });
        },
        child: Container(
          margin: EdgeInsets.only(right: 17),
          padding: EdgeInsets.only(top: 15, bottom: 15),
          alignment: Alignment.center,
          child: RoundButton(
            text: S.of(context).wancheng,
            textColor: _bgStatus ? Colors.white : Color(0xFFA0A0A0),
            backgroup: _bgStatus ? Color(0xFF32A060) : Color(0xFFD8D8D8),
            fontSize: 14,
            fontWeight: FontWeight.bold,
            padding: EdgeInsets.only(left: 12, right: 12, top: 2, bottom: 2),
            radius: 12,
          ),
        ),
      );
    }
  }
}