lift-app/lib/widgets/app_city_search_bar.dart

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:liftmanager/routers/fluro_navigator.dart';
import 'package:liftmanager/internal/search/search_router.dart';
import 'package:liftmanager/res/colors.dart';
import 'package:liftmanager/res/dimens.dart';
import 'package:liftmanager/res/gaps.dart';
import 'package:liftmanager/utils/theme_utils.dart';
import 'package:liftmanager/widgets/load_image.dart';

/// 自定义AppBar
class AppCitySearchAppBar extends StatelessWidget
    implements PreferredSizeWidget {
  const AppCitySearchAppBar(
      {Key key,
      this.city: "",
      this.centerTitle: "",
      this.actionName: "",
      this.actionIcon: "",
      this.backImg: "assets/images/icon_back.png",
      this.onPressed,
      this.isBack: true})
      : super(key: key);

  final String city;
  final String centerTitle;
  final String backImg;
  final String actionName;
  final String actionIcon;
  final VoidCallback onPressed;
  final bool isBack;

  @override
  Widget build(BuildContext context) {
    bool isDark = ThemeUtils.isDark(context);
    return AnnotatedRegion<SystemUiOverlayStyle>(
      value: SystemUiOverlayStyle.light,
      child: Container(
        color: isDark?Colours.dark_appbar_main:Colours.appbar_main,
//        decoration: BoxDecoration(
//          gradient: const LinearGradient(
//              colors: [Color(0xFF00D9FF), Color(0xFF0287FF)]),
//        ),

        child: SafeArea(
          child: Stack(
            alignment: Alignment.centerLeft,
            children: <Widget>[
              Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: <Widget>[
                  Container(
                    alignment: Alignment.centerLeft,
                    width: double.infinity,
                    child: Text(city,
                        overflow: TextOverflow.ellipsis,
                        style: TextStyle(
                            fontSize: Dimens.font_sp16, color: Colors.white)),
                    padding: const EdgeInsets.symmetric(horizontal: 15.0),
                  ),
                ],
              ),
//              Column(
//                mainAxisAlignment: MainAxisAlignment.center,
//                children: <Widget>[
//                  Container(
//                      padding: const EdgeInsets.only(left: 50.0),
//                      child: Icon(
//                        Icons.keyboard_arrow_down,
//                        size: 20,
//                        color: Colors.white,
//                      )),
//                ],
//              ),
              GestureDetector(
                  onTap: () {
                    NavigatorUtils.push(context, SearchRouter.searchPage);
                  },
                  child: Container(
                    height: 35,
                    margin: const EdgeInsets.only(left: 75.0, right: 15),
                    decoration: BoxDecoration(
                        color: Color(0x33FFFFFF),
                        borderRadius: BorderRadius.circular(17.5)),
                    child: Row(
                      crossAxisAlignment: CrossAxisAlignment.center,
                      mainAxisAlignment: MainAxisAlignment.start,
                      children: <Widget>[
                        SizedBox(
                          width: 16,
                        ),
                        Icon(
                          Icons.search,
                          color: Colors.white,
                        ),
                        Text(
                          "搜索你想要的关键词",
                          style: TextStyle(color: Colors.white),
                        )
                      ],
                    ),
                  ))
            ],
          ),
        ),
//        ),
      ),
    );
  }

  @override
  Size get preferredSize => Size.fromHeight(48.0);
}