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Questions tagged [mvvm]

The Model-View-ViewModel design pattern, which separates presentation from data and logic.

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3 votes
0 answers
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Trying to properly modelize app settings in a MAUI app following MVVM architecture

Context: I am working on a relatively simple MAUI app, which includes a Setting page allowing to customize the UX/UI of the app. I am trying to make the best use of the functionalities of MAUI, while ...
Toto's user avatar
  • 131
1 vote
0 answers
1k views

MVVM using Python's tkinter

My task is to change the architecture of a previously written application to Model-View-ViewModel and use the Command pattern. It is written in Python 3.10.6 and uses the tkinter library for the GUI. ...
broland's user avatar
  • 11
3 votes
0 answers
129 views

MVVM signing in using firebase

I'm new to MVVM architecture. I want to have authentication with email + password, google and Facebook. I'm not sure if there should be separate view models for each authentication way: ...
Edziu Kowalski's user avatar
2 votes
1 answer
158 views

MVVM pattern in Swift

I've been coding for some time now and since I am working alone I'm not strict in my coding structure approach(bad idea) and was only focused on getting things done which resulted in MVC(MASSIVE-View-...
Joe 's user avatar
  • 23
2 votes
0 answers
177 views

Angular: ViewModel for safe two-way binding & MVVM

Introduction: Any angular dev should know that Angular tends to provide multiple ways of doing things. When it comes to forms, I tend to prefer to rely on forms of the template-driven variety, and ...
RTD's user avatar
  • 121
2 votes
1 answer
48 views

Observe LiveData to indicate whether or not to display TextViews in MVVM

In the context of MVVM, is this an efficient way to communicate to the view that I should display some TextViews? Any advice on how I can improve it? ViewModel code: ...
Dylon Jaynes's user avatar
1 vote
0 answers
41 views

Observe task time and update accordingly

I am building TODO app using MVVM pattern. I have a recycler view that holds all the daily tasks. My goal was to update the task to be "complete task" and change the row layout when it's ...
user264345's user avatar
3 votes
0 answers
1k views

Jetpack compose login screen + ViewModel

Im working on the login screen for my application. It has fields for users email and password. Also users can click on forgot password button to send an email with new passsword. It can validate these ...
Destroyer's user avatar
  • 477
1 vote
1 answer
252 views

API call to list top stories using dependency injection in iOS with MVVM

I'm currently trying to find out what's the best networking architecture for MVVM applications. I couldn't find many resources and decided to go with dependency injection based architecture as per the ...
Tharindu Ketipearachchi's user avatar
2 votes
0 answers
176 views

Android architecture and dependency injection of domain layer usecases

I am implementing some of the architectural designs from Google I/O's app to my own app, but I have come across something in their app that has created some confusion for me. They have a domain layer ...
CJR's user avatar
  • 151
1 vote
1 answer
83 views

ViewModel for meetings and rentals

I am bringing up to date an old Xamarin app. I am concerned mostly with any design patterns I should be using or anti-patterns I shouldn't be using. This is my first attempt creating a ...
Randy's user avatar
  • 487
2 votes
3 answers
214 views

Is this method for loading data in a C# application recommended?

Goal I'd like to understand if this current method, of loading data and inserting data into a database I currently use is to be avoided? Code I drafted a simple application that loads data and inserts ...
DeveloperLV's user avatar
4 votes
0 answers
88 views

License-holder editing application

I am building a WPF (Windows Presentation Foundation) application. And I'm trying to use the MVVM (Model–View–ViewModel) design pattern. It's fascinating and rewarding, even though it seems overly ...
Ole M's user avatar
  • 141
1 vote
2 answers
122 views

checking is ellipse is filled or not

following code below works fine but feels kind of a mess. Any one has a better way to do this? I am creating a basic "Enter Pin" to unclick screen on an app. So if the user enters the 1st ...
dave's user avatar
  • 11
1 vote
1 answer
512 views

Updating Multiple Collections In ViewModel Based On A Single ListView Selection - WPF

-I have a ListView, and its SelectedItem property is bound to EmployeeModel SelectedEmployee in my VM, and it implements the Set method from MVVM Light. (Basically, ...
Joshua White's user avatar
2 votes
0 answers
902 views

Tic Tac Toe game using WPF+MVVM

I am looking for some advice on how to create a new ViewModel within an already existing ViewModel. I am creating a Tic Tac Toe game, to improve my knowledge of the MVVM pattern, WPF and C#. I am ...
Jack Dane's user avatar
  • 121
2 votes
0 answers
2k views

C# Learning MVVM by creating a Login functionality

I am trying to get my head around how MVVM pattern works. Would like to hear some reviews if I am implementing it correctly. View ...
DeveloperLV's user avatar
2 votes
2 answers
1k views

Create buttons with MVVM architecture

im trying to migrate my very large swift view controller to mvvm but it still feels very large, can you guys give me any advice What this controller does is simple it shows a UIView on which i can ...
Bolshoy705's user avatar
4 votes
0 answers
221 views

A better understanding for separation of concerns. Android; Kotlin

I am an Android developer with only 5 months of experience. I am still learning and trying to do my best. Right now I am interested in concept of ...
vt-dev0's user avatar
  • 183
2 votes
1 answer
86 views

Which is better-way to casting model

I need to convert my model to fit data in tableview cell finding better approach ...
Jaydeep Vyas's user avatar
11 votes
0 answers
353 views

Host-Agnostic Model-View-ViewModel Infrastructure

I've written an API that unlocks some serious MVVM capabilities with VBA's MSForms UI framework. This is the complete code-behind for an example ...
Mathieu Guindon's user avatar
0 votes
1 answer
3k views

C# Event handler for WPF MVVM

So I've been learning about MVVM and I had a problem. I often had to start a thread to download or do some longer task in background and when it is done change some properties so the UI updates. The ...
Marko Borković's user avatar
4 votes
0 answers
630 views

Navigation strategies for a SwiftUI-based app using MVVM pattern

I'm finding it difficult to decide on the best architectural pattern for a SwiftUI app but, for the moment, I'm sticking with MVVM as I found this a good fit conceptually. I'm trying to avoid the ...
rustproofFish's user avatar
3 votes
0 answers
1k views

Simple MVVM Navigation for WPF in c#

I have been learning MVVM and I have decided to create a small framework for simple MVVM programs I can make in the future. This program provides navigation between a main menu, settings menu, start ...
EricNie's user avatar
  • 41
4 votes
2 answers
240 views

Sanity check a simple RPG character

I'm writing an assistant for the tabletop RPG Pathfinder in Java. I intend to use the MVVM pattern using JavaFX, possibly through mvvmFX. Before I go into the V-VM phase, I have built a first ...
Anab's user avatar
  • 365
4 votes
1 answer
617 views

Configuring NavigationService and NavigationView in one place

Context The main goal located a configuration NavigationService and NavigationView in one place. In order to minimalization a ...
Viewed's user avatar
  • 294
3 votes
0 answers
793 views

WPF: An implementation of INotifyDataErrorInfo

An abstract base class which derives from the ObservableObject (MvvmLight), implementing the INotifyDataErrorInfo interface. ...
Kostas K.'s user avatar
  • 215
3 votes
1 answer
147 views

Android - Simplify ViewModel and Repository classes with OOP

Let's say I have 2 repository classes: ...
Mertcan Seğmen's user avatar
1 vote
2 answers
213 views

Async Check for Domain Fullname With WPF and Caliburn.Micro

I have a small WPF program built using Caliburn.Micro which checks Active Directory for a user with the current username of the logged-on user. I have a Bootstrapper...
Mark Harwood's user avatar
2 votes
0 answers
393 views

Is this an acceptable MVVM Model with IEditableObject implementation?

I'm trying to follow MVVM pattern in a VB.net WPF application, and I would like to implement IEditableObject. Is this code acceptable for an MVVM application? In ...
Notts90's user avatar
  • 141
6 votes
1 answer
885 views

WPF MVVM ColorLister with navigation

By hashing together various online tutorials I've constructed my first MVVM application that lets users navigate between "tabs" and a "tab" (ColorList_Tab) that performs basic list functions such as ...
DaemonFire's user avatar
3 votes
1 answer
100 views

ViewModels for image transformations

In my project I have a chain of Fragments where each one gets a bitmap, manipulates it, then sends it to another fragment for more processing. My fragment chain looks like this: CaptureFragment -> ...
Azbyn's user avatar
  • 33
5 votes
2 answers
229 views

MVVM model letting the user select a directory in a testable manner

My application needs to let the user select a folder from somewhere on their local machine. Below are the interface and model pair that I have written to let the user do so. ...
Toby Smith's user avatar
2 votes
0 answers
146 views

Swift MVVM: Repositories - loading entities and dependency injection

I create a lexikon and a navigation for ZOO. I use MVVM architecture supported by ReactiveSwift. I have a few questions about my practises and whether I could write my repositories better and more ...
SupDaniel1994's user avatar
-1 votes
1 answer
50 views

Is attempt like this, when using Application class, breaking MVVM pattern? [closed]

In my application I am using two view models. MainViewModel if fiered when MianWindow is initialized. And UpdateViewModel is fiered when UpdateWindow is initialized. The update VM is supposed to use ...
bakunet's user avatar
  • 81
5 votes
1 answer
207 views

Scraping an parsing jockeys data using Task.Run

I started to have HUGE doubts regarding my code and I need some advice from more experienced programmers and architects. On the button click, the application runs a method, that is running a ...
bakunet's user avatar
  • 81
3 votes
1 answer
2k views

Create Products TableView with PAGINATION and LIKE product feature in RxSwift MVVM

I have tried to develop a simple product listing app in RxSwift with MVVM design pattern. I have managed to achieve it but I need someone to review my code, such as: Have I followed the proper ...
Ajay Bhanushali's user avatar
4 votes
1 answer
166 views

Android clock in/out app

I am writing a clock in / out and payroll app for Android. I am no professional, but I was hoping I could get some feedback on whether my code is spaghetti or not. This is just one of many classes &...
Elizabeth Sinclair's user avatar
3 votes
1 answer
1k views

Login page using RxSwift in MVVM

I am building a simple login page which will check for username before navigating to another screen and here is how I am doing the binding now. I would like to know if I am doing it right and if I am ...
Samuel Kith's user avatar
2 votes
0 answers
2k views

Setting the Owner property on a modal dialog in WPF/MVVM using a Func

I'm looking to solve the problem of setting the Owner property on modal dialogs in WPF, while using IoC and MVVM patterns. I've seen (and written) all sorts of ...
epalm's user avatar
  • 121
1 vote
1 answer
611 views

Addition Program using wpf through MVVM

I'm new to MVVM and WPF. Please suggest whether this is okay or I need to correct my understanding of MVVM which I confess is very limited as at the moment. I have created a simple addition ...
Ramji R's user avatar
  • 101
12 votes
1 answer
10k views

Filter Collection by Multiple Criteria

I want to the user to filter a list of receipts by various criteria. Just the regular, an empty filter should show all items, an entry in customer should show all receipts from that customer and an ...
Mister 832's user avatar
10 votes
1 answer
239 views

Visual Studio exception visualizer for lengthy exception messages

I use Autofac a lot and for everything and when you make a mistake and forget to register a dependency etc. it'll tell you exaclty what's wrong. Although its ...
t3chb0t's user avatar
  • 44.3k
1 vote
2 answers
2k views

Android MVVM application architecture

Inspired this guide: https://developer.android.com/jetpack/docs/guide I try to build some app with similar architecture. App interact with remote API via http protocol (json responses from server). ...
igor_rb's user avatar
  • 111
1 vote
1 answer
6k views

Flutter - Implementing a simple ListView with MVVM

I've implemented a simple ListView in MVVM that displays a few PrepSteps (short form of PreparationSteps). While implementing I wasn't sure about if my approach is "...
Jens's user avatar
  • 897
1 vote
0 answers
2k views

LiveData, MVVM and Repository Pattern

Is this a good approach or I've just found a nasty workaround? I'm using MediatorLiveData class because seems useful to update the source of a ...
Ricardo's user avatar
  • 111
1 vote
1 answer
1k views

MVVMLight Toolkit Data Binding Technique

I'm simulating my real-world application by using a really simple demo app here, but it has the same concept. The question is MVVM Light Toolkit specific, as the ...
Sach's user avatar
  • 185
5 votes
1 answer
1k views

Accessing View from ViewModel

Having a view (grid control) that provides some functionallity via methods (primary SerializeView / DeserializeView) that should be called from the view model which is bound to the view. One point to ...
JanDotNet's user avatar
  • 8,538
-1 votes
1 answer
84 views

Model Exposure with MVVM [closed]

I have been starting to learn MVVM to give my WPF projects better structure. I have to sample classes, DeviceModel and ...
Dan's user avatar
  • 375
0 votes
1 answer
259 views

Saving ResourceDictionary theme

I have the following command bonded to my button, It's supposed detect the current used theme and change it (Dark or Light). ...
Black Panther's user avatar