appbar

问题 I'm trying to center the title of Sliver AppBar and add a second text below this. I can not do it. Below is the image that is now and how it should be. Can anyone help me? This is my code. import 'package:flutter/material.dart'; void main() => runApp(new MyApp()); class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return new MaterialApp( title: 'Slive AppBar', theme: new ThemeData( primarySwatch: Colors.blue, ), debugShowCheckedModeBanner: false, home: new

问题 I have a Windows 8 application (Xaml and C#): I have a userControl that is included in a MainPage. In this MainPage i have included a BottomAppBar that is fully functioning on RightClick and Windows+Z. What i need to do is to open the BottomAppBar from an event handler (in the usercontrol back code) on an image that exists in the userControl. i need to access the BottomAppBar in order to use the property IsOpen, but i am not being able to do so. Any hint? am i missing anything? 回答1: I am

问题 I tried do create a navigation bar like in the Windows News App or Food/Health-App, that appears on swiping from the bottom or rightclicking. I wanted to do it the mvvm-way: Alle views define an ApplicationBar that contains a UserControl. This contains a horizontal ItemControl which is bound to a ViewModel. This ViewModel contains all the stuff I need to create the navigation buttons. On every Page I tell the ViewModel my Page's name and it gives me buttons with the button of the current Page

问题 I try to develop flutter application. In this application I used Appbar with user icon to navigate another page. Now I am clicked that icon(person icon) it shows error. . It has not proper documentation though internet. I couldn't found answer. My source code is class MyAppState extends State<MyApp> { @override Widget build(BuildContext context) { return new MaterialApp( home: new Scaffold( appBar: new AppBar( title: new Text("Web Issue finder"), actions: <Widget>[ new IconButton( icon: Icon

问题 I am looking for the event that toggles the appbar in javascript. So it's basically the "edge-swipe" gesture event on the top/bottom edge of the screen. For example, I want to show a text "edge swiped" on the page when the user swipe the upper or butto edge of the screen, without declaring a app bar in the page. How will I be able to do that? I tried crossslide event and it doesn't seem to be right. 回答1: Cross-slide won't work for you because it's a gesture that can start anywhere. There's no

问题 I have created a new thread from this one to avoid confusion as someone told me that Leftnav is now Drawer within the Material-UI components. I am still having problems, the first which is the ES7? syntax of the arrow functions shown here. I have changed to the following code with flat links for now to try to understand what is going on: import React, { Component } from 'react' import { Drawer, AppBar, MenuItem} from 'material-ui' import baseTheme from 'material-ui/styles/baseThemes

问题 I am aware that I can use IconButton in the actions of the AppBar in Flutter. But instead of the icon, I'd like the user to see the words 'Save' or 'Back' or 'Cancel' and click on them in the AppBar. How can I achieve this? Here is part of my code that shows the AppBar. Instead of the save Icon, I'd like to use 'Save' return Scaffold( appBar: AppBar( leading: IconButton(icon: Icon(Icons.arrow_back), tooltip: "Cancel and Return to List", onPressed: () { Navigator.pop(context, true); }, ),

问题 The Scaffold -Widget only allows to place a FloatingActionButton at the bottom right or the bottom center. How can I place it between AppBar and body like here? [ 回答1: Siva Kumar gave nice example, but the second have of the FAB was not clickable. So I made some changes in the code and it works great now! class MyHomePage extends StatefulWidget { MyHomePage({Key key, this.title}) : super(key: key); final String title; @override _MyHomePageState createState() => new _MyHomePageState(); } class

问题 How can I get the height of an AppBar in Flutter? I am using the MarialApp Widget ('package:flutter/material.dart'). I have the height of my Context and would like to deduct the height of the appbar. final double height = MediaQuery.of(context).size.height; 回答1: This is not an ideal way, I think, but it will work. Firstly declare the AppBar widget that you will use in your Scaffold . Widget demoPage() { AppBar appBar = AppBar( title: Text('Demo'), ); return Scaffold( appBar: appBar, body: /*

问题 I am having a lot of trouble trying to implement material-ui 's AppBar with Leftbar as there seems to be lots of different variations on component declaration/imported dependencies syntax and components. I can't even find proper documention on http://www.material-ui.com/ about Leftnav in the first place, all they give with Appbar is a static hamburger menu example. My code is as follows: import React, { Component } from 'react' import { LeftNav, AppBar} from 'material-ui' import baseTheme