AppBar(leading:Icon(Icons.account_circle_rounded),), Flutter AppBar 领先 您可以控制leading可以占用多少宽度: 代码语言:javascript 复制 AppBar(leading:Icon(Icons.account_circle_rounded),leadingWidth:100,// default is 56), Flutter AppBar 前导宽度 如果leading未提供,AppBar 会自动为我们暗示。示例包括...
从源码上看,leading的宽度被设置为了56PX。 1.2自定义AppBar classThemeAppBarextendsStatefulWidgetimplementsPreferredSizeWidget{@override_ThemeAppBarStatecreateState()=>_ThemeAppBarState();@override//设置AppBar的宽度SizegetpreferredSize=>Size.fromHeight(160);}class_ThemeAppBarStateextendsState<ThemeAppBar>{@...
登录后复制AppBar(title: const Text('AppBar 组件'),leading: BackButton(),elevation: 0,backgroundColor: Colors.white,centerTitle: true,iconTheme: IconThemeData(color: Colors.black),titleTextStyle: TextStyle(color: Colors.black,fontSize: 16,fontWeight: FontWeight.bold),actions: [IconButton(onPre...
flutter appbar leading 宽度不能控制 returnScaffold(backgroundColor:Colors.white,appBar:AppBar(backgroundColor:Colors.white,elevation:0,titleSpacing:0.0,//title widget两边不留间隙title:Container(color:Colors.red,child:ListTile(title:Text('左侧按钮自定义'),)),actions:<Widget>[ FlatButton(onPressed: ...
appBar: AppBar( title: Text('ContainerWidget'), ), body: Container( width: 100, //宽度 height: 100,//高度 alignment: Alignment.center, padding: EdgeInsets.all(10),//内边距 margin: EdgeInsets.all(10),//外边距 transform: Matrix4.rotationZ(0.1),//z轴旋转角度 ...
width:容器宽度 child:容器子元素 示例代码01 import 'package:flutter/material.dart'; void main() { runApp(MaterialApp( home: Scaffold( appBar: AppBar(title: const Text("你好Flutter")), body: const MyApp(), ), )); } // 容器组件 class MyApp extends StatelessWidget { const MyApp({Key?
( leading: Icon(Icons.photo), title: Text('照片'), onTap: () {}, ), ListTile( leading: Icon(Icons.music_note), title: Text('音乐'), onTap: () {}, ), ListTile( leading: Icon(Icons.videocam), title: Text('视频'), onTap: () {}, ), ], ), ), ); }, ); }, child...
AppBar({Keykey,this.leading,//主导Widgetthis.automaticallyImplyLeading:true,this.title,//标题this.actions,//其他附加功能this.flexibleSpace,//伸缩空间,显示在title上面this.bottom,//显示在title下面this.elevation:4.0,//阴影高度this.backgroundColor,//背景颜色this.brightness,//明暗模式this.iconTheme,//...
maxExtent: maxExtent,//当前滚动的高度(最大是 expandedHeight,即 SliverAppBar 完全展开时)currentExtent: math.max(minExtent, maxExtent - shrinkOffset), toolbarOpacity: toolbarOpacity, isScrolledUnder: isScrolledUnder, child: AppBar( leading: leading, ...