Flutter AppBar组件中的常见属性: import'package:flutter/material.dart';classAppBardemoPageextendsStatelessWidget{@overrideWidgetbuild(BuildContextcontext){returnScaffold(appBar:AppBar(backgroundColor:Colors.red,leading:IconButton(icon:Icon(Icons.menu),tooltip:"Search",onPressed:(){print('menu Pressed');}...
This will create an AppBar with a search button as its only action, and on press the AppBar will turn white and have a TextField inside, allowing user input. Once the user has input something and pressed the "enter" button on their keyboard, it will close and the value will be printe...
Here is the situation, which to me seems like it should be really simple: a material design app with a drawer and a bottom navigation bar, with actions; the actions are different depending on your destination (of course, as the destinations are by definition unrelated) and there is at leas...
Scaffold(body:CustomScrollView(slivers:<Widget>[SliverAppBar(...bottom:AppBar(title:Container(height:45,child:TextField(decoration:InputDecoration(border:OutlineInputBorder(),hintText:'Enter a search term'),),),),),SliverGrid(gridDelegate:SliverGridDelegateWithFixedCrossAxisCount(crossAxisCount:2,childA...
在之前的学习中自己实现了了一个搜索界面,其中自定义了搜索栏,实现效果也就将就,后来发现在Flutter中有现成的控件可以使用,也就是SearchDelegate<T>,调用showSearch(context: context, delegate: searchBarDelegate())实现。 2.定义SearchDelegate classsearchBarDelegateextendsSearchDelegate<String>{@overrideList<Widget>buil...
Flutter中的AppBar、TabBar和TabController——顶部切换栏是如何实现的
appBar: new AppBar( leading: new IconButton( icon: new Icon(Icons.menu),//导航图标 tooltip: "导航菜单", onPressed: null), title: Text("实例标题"), actions: <Widget>[ new IconButton( icon: new Icon(Icons.search),//搜索图标
cuberto_bottom_bar 动画底部导航栏。 2022-01-03 121 convex_bottom_bar 实现ConvexAppBar以在底部栏中显示一个凸形选项卡。支持主题。 2022-09-19 1970 full_screen_menu 全屏菜单,为用户提供多种精美的方式。 2021-03-20 65 fab_circular_menu 使用Floating Action Button创建漂亮的圆形菜单。 2021-03-24 ...
AppBar自定义顶部按钮图标、颜色 leading在标题前面显示的一个控件,在首页通常显示应用的 logo;在其他界面通 常显示为返回按钮 title标题,通常显示为当前界面的标题文字,可以放组件 actions通常使用 IconButton 来表示,可以放按钮组 bottom通常放tabBar,标题下面显示一个 Tab 导航栏 ...
在Flutter中,showSearch是一个用于显示搜索框和处理搜索功能的方法。它可以在不使用AppBar的情况下自定义搜索UI。通过showSearch方法,开发者可以为应用添加搜索功能,使用户能够搜索和过滤数据。 showSearch方法接受两个参数:BuildContext和SearchDelegate。BuildContext是上下文对象,用于在UI树中定位组件。SearchDelegate是一个...