It’s worth nothing to use MVVM frameworks if you don’t know what’s going on inside. So let’s go step by step and build your own ViewModelBase class. ViewModelBase is class common for all your viewmodels. Let’s move all common logic to this class. Your ViewModels should implement INotifyPropertyChanged (do you understand why?) public abstract class … Read more
Your general approach is perfectly fine MVVM, having a ViewModel exposing a collection of other ViewModels is a very common scenario, which I use all over the place. I would not recommend exposing items directly in a ViewModel, like nicodemus13 said, as you end up with your view binding to models without ViewModels in between … Read more
It’s been some time since I posted the question, which was quite colored by my little experience and knowledge of MVC. Still I received some quite useful input, that eventually led me to find a solution and also gain some insight of MVC. What threw me off in the first place, was that you could … Read more
For the info of the people who stumble upon this question. There appears to be now a built-in way to achieve a reverse mapping by adding a .ReverseMap() call at the end of your CreateMap() configuration chain.
ValidateInput and AllowHTML are directly connected with XSS security issues. So let us first try to understand XSS. XSS (cross-site scripting) is a security attack where the attacker injects malicious code while doing data entry. Now the good news is that XSS is by default prevented in MVC. So if any one tries to post … Read more
observeAsState is part of the runtime-livedata library. Add the dependency to your module’s build.gradle file. Replace $compose_version with the version of compose which you use, e.g. 1.0.0-beta01: implementation “androidx.compose.runtime:runtime-livedata:$compose_version” You can find the available versions here in Google’s Maven repository.
Getting matchers to work with Kotlin can be a problem. If you have a method written in kotlin that does not take a nullable parameter, then we cannot match with it using Mockito.any(). This is because it can return void and this is not assignable to a non-nullable parameter. If the method being matched is … Read more
Add these dependencies: implementation “androidx.activity:activity-ktx:$activity_version” implementation “androidx.fragment:fragment-ktx:$fragment_version” You can find the latest versions of libraries here: https://developer.android.com/jetpack/androidx/releases/activity https://developer.android.com/jetpack/androidx/releases/fragment
Updated answer: Things changed a little bit, as the previously needed dependency – ViewModelProviders – got deprecated (see the old answer for details). You can now use the ViewModelProvider constructor directly. So, in this case, the answer would be: private val viewModel = ViewModelProvider(this).get(SheduleViewModel::class.java) Note that, however, if you include the androidx.activity:activity-ktx:$Version dependency (a few … Read more
<Grid > <Grid.ColumnDefinitions> <ColumnDefinition Width=”*”/> </Grid.ColumnDefinitions> <Button Command=”{Binding ClickCommand}” Width=”100″ Height=”100″ Content=”wefwfwef”/> </Grid> the code behind for the window: public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); DataContext = new ViewModelBase(); } } The ViewModel: public class ViewModelBase { private ICommand _clickCommand; public ICommand ClickCommand { get { return _clickCommand ?? (_clickCommand … Read more