navigation

问题 i cant get this navigation bar to center. Please help. Here is my html: <div class="nav"> <ul id="menu"> <li><a href="home.html">Home</a></li> <li><a href="latestnews.html">Latest News</a></li> <li><a href="resultsevents.html">Results & Events</a></li> <li><a href="fundraising.html">Fundraising</a></li> <li><a href="gallery.html">Gallery</a></li> </ul> </div> Here is my css: #nav { margin:0px auto; } ul { display: inline-block; list-style-type:none; margin:0 auto; padding:0; position:

问题 I have a container with some text and an image, and a navigation div that should (when the time comes) slide in from the right. To make this happen, I though I'd push the div to the right of the screen and put overflow-x: hidden on it's container to hide it, and then push it back into the screen when it's needed. The problem is , when I set overflow-x: hidden on the container, it also clips off the vertical content of the navigation. Here's a fiddle with a demo. What I have tried: Setting

问题 In my app, I got a class "home" where the user is navigated to after he is authorized. Within "home" there is a PageView with BottomNavigationBar. When the user is getting a push notification from firebase (new message) he should be navigated to ChatHome and to the specific chat after tapping. How can I do this? Home does look like this @override Widget build(BuildContext context) { return Scaffold( key: _scaffoldKey, body: PageView( children: <Widget>[ Feed(userID: widget.userID), SearchView

问题 I have a navigation_bar.dart file that handles changing to new pages within my app. Within it, I am using the bottomNavigationBar to build out four different pages based on what tab is currently selected like so: class NavigationBar extends StatefulWidget { @override _NavigationBarState createState() => _NavigationBarState(); } class _NavigationBarState extends State<NavigationBar> { int _selectedIndex = 0; final List<Widget> _pageOptions = <Widget>[ Page1(), Page2(), Page3(), Page4(), ];

问题 I'm developing an app, where there is the main activity, it display some content (texts, images, etc), and a translucent menu on top of it. In this menu, I got link to other "screens" (implemented as Activities), on clicking it, I get correctly to the new activity, but the "activity changing animation" of the device blinks and then get me to the new activity. I would like to make the navigation experience to be seamless on navigate through the screens, keeping my menu always on top of it.

问题 All my pages use onSupportNavigateUp() function with the same method and it's working. However when I tried to implement in my LessonActivity.java it's not working. Any ideas? It's it because of WebView ? My current working codes for LessonActivity.java : package com.activity.lesson; import android.app.Dialog; import android.content.DialogInterface; import android.content.Intent; import android.content.SharedPreferences; import android.os.Build; import android.os.Bundle; import android

问题 I have a complex navigation structure, I go from one nav graph then based on some logic, decide which nav graph to go to there. However both the nav graphs share 3 other nav graphs. See image below Currently I get a circular reference error if I try to include each nav graph in the A & B. I have also tried creating a global action, which leads to illegal argument exception since it doesn't exist on the nav graph. Please help!!! 来源： https://stackoverflow.com/questions/61083805/circular

问题 My home viewcontroller is Tabbarcontroller From tabbar i navigate to (A) Viewcontroller (TabarViewcontroller -> A (Viewcontroller) From A (Viewcontroller) i push (B) Viewcontroller From B (Viewcontroller) i Present (C) Viewcontroller When i dismiss (c) Viewcontroller i want to show (A) Viewcontroller or (Home) TabbarviewController So, I want to first dismiss presented viewcontroller and then I want to pop my previous pushed controller Here is my navigation flow From Tabbarviewcontroller 1-

问题 My home viewcontroller is Tabbarcontroller From tabbar i navigate to (A) Viewcontroller (TabarViewcontroller -> A (Viewcontroller) From A (Viewcontroller) i push (B) Viewcontroller From B (Viewcontroller) i Present (C) Viewcontroller When i dismiss (c) Viewcontroller i want to show (A) Viewcontroller or (Home) TabbarviewController So, I want to first dismiss presented viewcontroller and then I want to pop my previous pushed controller Here is my navigation flow From Tabbarviewcontroller 1-

问题 I have a WordPress site using the Divi theme. I have a dropdown in the navbar that I want to stay open until I click somewhere with the mouse. My trouble is, I don't understand the CSS of the dropdown. I don't know which CSS class to use for opening/closing the dropdown programatically. Here is the site that I'm working on: https://sprider.se.knowe.work/ The dropdown is the lime green one in the top right of the page with label "Våra erbjudanden", see the screenshot: So in short, which Divi