53 lines
1.5 KiB
Dart
53 lines
1.5 KiB
Dart
import 'package:flutter/material.dart';
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import 'package:flutter_screenutil/flutter_screenutil.dart';
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class CustomAppBarWidget extends StatelessWidget implements PreferredSizeWidget {
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final String title;
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final List<Widget>? actions;
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final Widget? leading;
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final bool centerTitle;
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final Color? backgroundColor;
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final double? elevation;
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const CustomAppBarWidget({
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super.key,
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required this.title,
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this.actions,
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this.leading,
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this.centerTitle = true,
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this.backgroundColor = Colors.white,
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this.elevation,
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});
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@override
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Widget build(BuildContext context) {
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// 判断是否需要显示返回按钮
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bool showBackButton = ModalRoute.of(context)?.canPop ?? false;
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return AppBar(
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title: Text(
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title,
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style: TextStyle(
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fontSize: 18.sp,
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fontWeight: FontWeight.w500,
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),
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),
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actions: actions,
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// 根据是否有自定义leading来决定使用什么
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leading: leading ??
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(showBackButton
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? IconButton(
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icon: const Icon(Icons.arrow_back_ios_new_rounded),
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onPressed: () => Navigator.of(context).pop(),
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)
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: null),
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// 当有leading时标题默认左对齐，否则按centerTitle参数决定
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centerTitle: false,
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backgroundColor: backgroundColor,
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elevation: elevation,
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);
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}
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@override
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Size get preferredSize => const Size.fromHeight(kToolbarHeight);
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}
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