How to patch an S4 method in an R package?

If you find a bug in a package, it's usually possible to patch the problem with fixInNamespace, e.g. fixInNamespace("mean.default", "base"). For S4 methods, I'm not sure how to do it though. The...

getting users back in app through homescreen integration

I'm trying to figure out ways to get users to return into my app more often. so far i have: http://android.arnodenhond.com/tutorials/home-screen Widgets Live Folders Shortcuts Install...

How to arrange input elements to columns or other way to improve form readability

Order entry form is created from fields defined in database. Every field contains text caption and input element. input element is input type=text, checkbox or select element. If can be also...

could not be changed because the data didn't validate. (Django)

Models.py class Produto(models.Model): uuid = models.CharField(max_length=50, primary_key=True, editable=False, default=gen_uuid) produto = models.CharField(max_length=100,...

CSS - display: none; not working

I'm trying to develop a mobile stylesheet and in this stylesheet I want to remove a particular div. In the HTML code of the div, I place an id called "tfl", as shown below: <div id="tfl"...

Qt slider widget with tick text labels

I'm searching for Qt widget like QSlider, but with text tick labels support like this: This widget I'll use as mode switcher. Have you met something like that?

Unknown module(s) in QT: core gui widgets

I just installed Qt5.4.1 MSVC2013 on windows, and when I tried to build a project, I encountered an error like Unknown module(s) in QT: core gui widgets. Then I add a user environment variable...

Table Widget Needed

I have a requirement to build a table widget for sitecore 8 update 5. They should be able to choose the number of columns from 1 to 6 and then edit the content of the table in experience editor. I...

Removing case sensitivity from Email in Django login form

I've created a custom UserModel and used Email as main authenticating id instead of username. The problem that it is case sensitive, as it counts [email protected],[email protected] as 2 different...

How does flutter's Text widget let it display all spaces that end with a space?

Container( decoration: BoxDecoration( color: Colors.blue, border: Border.all(width: 1.0,color: Colors.red) ), child: Text('11111111 '), ), When I look at...

Flutter occurs 'Error connecting to the service protocol: HttpException...' error on iOS device

For network connection I use dio and for checking connection state from Connectivity. And in here I check network state: @override Widget build(BuildContext context) { ...

C# swagger documentation for individual members of the request body object

We are writing swagger documentation using /// comments in the following way: /// <summary> /// Create a new widget /// </summary> /// <param...

How to change the text color of the button theme in Flutter

If I add a theme to my app like this: class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( debugShowCheckedModeBanner: false, ...

Flutter Gridview or StaggeredGridview variable width /variable number of items to fill column

I am trying to display a gridview that has variable number and width buttons like this: But what I have ended up with when trying gridview is a fixed number of buttons and fixed widths like...

Expand area of CupertinoNavigationBar leading

I am using CupertinoNavigationBar to make a layout expected like image below In left side/leading area, I override default back button to create the layout, but instead I got an overflow return...

Navigating from a TabBarView Child to another Route (full screen)

I have a TabBarView containg 4 tabs. They all have a button that can be used to navigate to another Route, but the navigation is done in the tabs itself i.e. The tabbed Appbar still exists, how to...

flutter add widgets on top and bottom to a listview

Trying to add some widgets to before of a listview.... I searched and found to use expanded like: return Scaffold( appBar: AppBar( title: Text('Test Listview'), ), body:...

ERROR TypeError: "jit_nodeValue_3(...).toggle is not a function"

I'm working on an Angular project. I wanted to add a month picker that would turn up on click of a text field at the nav bar. I'm using primeng components like <p-calendar> and <p-overlay>. Its a...

How do I solve Problem with Geolocation in Flutter

I try to build an app using geolocation services here is the code: import 'package:brew_two/services/auth.dart'; import 'package:flutter/material.dart'; import...

How to access an image file from assets in Flutter that has spaces in it's name?

Working on a Flutter application project that has some absurd naming conventions from the design team which prepares image assets, therefore the following question. What's the syntax to access an...

Flutter IgnorePointer for 2 fingers

I am trying to ignore multi-finger touches (2-finger specifically) on a Button by wrapping it with IgnorePointer() like so: import 'package:flutter/material.dart'; void main() { ...

How to apply an Aria label to a sub-element of a PrimeNG component?

Initial scenario: PrimeNG 9.1.0 Angular 9.1.9 The accessibility test of Google's Lighthouse notes the missing Aria label for the chevron element of the PrimeNG dropdown component ("Buttons do...

Swipe up and down to overlay two widget in Flutter

I'm using flutter I'm having 2 widget A and B with position like photo above. How can I move widget B overlay widget A when touch or swipe-up from widget B and back when swipe-down?

How to adjust Hue Saturation and Brightness of an image in Flutter?

In my Flutter app, I have an image and three sliders, one for Hue, one for Saturation, and one for Brightness, and I'm trying to figure out how to use the ColorFiltered widget to make these...

MaterialApp ThemeData iconTheme

I have some ListTile widgets around my app, and all of them have an icon. From here I see that I need to override my ListTile with ListTileTheme( iconColor: Colors.blue, child: .. ) since the...

Flutter - SafeArea not working on phones with notches

I have a Flutter app that runs on mobiles. I use an Android Emulator (Pixel3 XL) with a notch in order to test SafeArea Widget but it seems to have no effect. This is how I used the SafeArea...

The argument type 'Object?' can't be assigned to the parameter type 'Widget?'

I was following tutorial and I get this error ' The argument type 'Object?' can't be assigned to the parameter type 'Widget?'.dartargument_type_not_assignable'. I tried to look on the...

How to make a customised QR Code Scanner using Flutter?

I want to make a QR Code Scanner in Flutter that has this type of border that helps users to focus on the scanner, has a border color (blue in this case) and a white background color and is...

Flutter 2.5 update - const keyword on every static Widget

After flutter 2.5 update, every widget that uses static data need to by put in const keyword How to get ride of that warning to use const or how to auto insert const when we create widget in flutter code

Flutter Navigator 2.0 - Router does not receive deep link when app is launched from URL?

I'm using Flutter Navigator 2.0 with Nested Routers - there's a main router created by calling MaterialApp.router() and child routers created as Router() widgets with proper RouterDelegates (child...