huixiang_app/lib/view_widget/my_appbar.dart

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:huixiang/utils/font_weight.dart';

class MyAppBar extends StatelessWidget implements PreferredSizeWidget {
  final Function? onTap;
  final Widget? action;
  List<Widget>? actions;
  final PreferredSizeWidget? bottom;
  final Widget? titleChild;
  final String? title;
  final double titleSize;
  final Color titleColor;
  final Color leadingColor;
  final Color background;
  final Size preferredSize;
  final double toolbarHeight;
  final bool leading;
  final bool centerTitle;
  final SystemUiOverlayStyle systemUiOverlayStyle;
  final Function? exit;

  MyAppBar(
      {this.onTap,
      this.action,
      this.actions,
      this.bottom,
      this.titleChild,
      this.title,
      this.toolbarHeight = kToolbarHeight,
      this.background = const Color(0xFFF7F7F7),
      this.leadingColor = Colors.black,
      this.titleColor = Colors.black,
      this.titleSize = 18,
      this.systemUiOverlayStyle = SystemUiOverlayStyle.dark,
      this.leading = true,
      this.centerTitle = true,
      this.exit})
      : preferredSize =
            Size.fromHeight(toolbarHeight + (bottom != null ? 35 : 0)) {
    if (actions == null) actions = [];
    if (action != null) {
      actions!.add(
        Container(
          margin: EdgeInsets.only(right: 15),
          alignment: Alignment.center,
          child: GestureDetector(
            onTap: onTap?.call(),
            child: action,
          ),
        ),
      );
    }
  }

  @override
  Widget build(BuildContext context) {
    return AppBar(
      backgroundColor: background,
      elevation: 0,
      scrolledUnderElevation: 0,
      systemOverlayStyle: systemUiOverlayStyle,
      leading: leading
          ? GestureDetector(
              behavior: HitTestBehavior.opaque,
              onTap: () {
                if (exit == null)
                  Navigator.of(context).pop();
                else
                  exit!.call();
              },
              child: Icon(
                Icons.arrow_back_ios,
                color: leadingColor,
                size: 22,
              ),
            )
          : Container(),
      title: ((title == null || title == "") && titleChild != null)
          ? titleChild
          : GestureDetector(
              onTap: () {
                if (exit == null)
                  Navigator.of(context).pop();
                else
                  exit!.call();
              },
              child: Text(
                title ?? "",
                style: TextStyle(
                  color: titleColor,
                  fontWeight: MyFontWeight.medium,
                  fontSize: titleSize,
                ),
              ),
            ),
      actions: actions,
      bottom: bottom,
    );
  }
}

// MyAppBar(
// leading: false,
// centerTitle: false,
// toolbarHeight: kToolbarHeight + 58,
// titleChild: PreferredSize(
// preferredSize: Size(
// MediaQuery.of(context).size.width - 60.w,
// kToolbarHeight,
// ),
// child: Theme(
// data: ThemeData(
// splashColor: Colors.transparent, // 点击时的水波纹颜色设置为透明
// highlightColor: Colors.transparent, // 点击时的背景高亮颜色设置为透明
// ),
// child: Container(
// alignment: Alignment.bottomCenter,
// child: TabBar(
// controller: tabcontroller,
// automaticIndicatorColorAdjustment: true,
// isScrollable: true,
// indicatorWeight: 2,
// indicatorColor: Color(0xFF39B54A),
// labelPadding: EdgeInsets.only(left: 8.w, right: 8.w),
// indicatorSize: TabBarIndicatorSize.label,
// unselectedLabelStyle: TextStyle(
// fontSize: MediaQuery.of(context).size.width >= 650 ? 10.sp : 15.sp,
// fontWeight: FontWeight.w400,
// ),
// labelStyle: TextStyle(
// color: Colors.black,
// fontSize:
// MediaQuery.of(context).size.width >= 650 ? 12.sp : 18.sp,
// fontWeight: FontWeight.bold,
// ),
// labelColor: Colors.black,
// tabs: lables.map((e) => MyTab(text: e)).toList(),
// ),
// ),
// ),
// ),
// // onTap: () {
// //   _toRelease();
// // },
// // action: GestureDetector(
// //   behavior: HitTestBehavior.opaque,
// //   child: Container(color: Colors.transparent,
// //   padding: EdgeInsets.only(left: 20,right: 20),
// //   child: SvgPicture.asset(
// //     "assets/svg/shequ_fabu.svg",
// //     fit: BoxFit.contain,
// //     width: 24,
// //     height: 24,
// //   ),)
// // )
// )