maui | NET MAUI is the .NET Multi | iOS library

How can I change a page in BlazorWebView using Maui? For example, the page '/' was opened and I need to open '/fetch'.

I found how to return to the previous link via js.

Created a Custom Navigation Manager:

This question is about two MAUI controls (Switch and ListView) - I'm asking about them both in the same question as I'm expecting the root cause of the problem to be the same for both controls. It's entirely possible that they're different problems that just share some common symptoms though. (CollectionView has similar issues, but other confounding factors that make it trickier to demonstrate.)

I'm using 2-way data binding in my MAUI app: changes to the data can either come directly from the user, or from a background polling task that checks whether the canonical data has been changed elsewhere. The problem I'm facing is that changes to the view model are not visually propagated to the Switch.IsToggled and ListView.SelectedItem properties, even though the controls do raise events showing that they've "noticed" the property changes. Other controls (e.g. Label and Checkbox) are visually updated, indicating that the view model notification is working fine and the UI itself is generally healthy.

Build environment: Visual Studio 2022 17.2.0 preview 2.1
App environment: Android, either emulator "Pixel 5 - API 30" or a real Pixel 6

The sample code is all below, but the fundamental question is whether this a bug somewhere in my code (do I need to "tell" the controls to update themselves for some reason?) or possibly a bug in MAUI (in which case I should presumably report it)?

The sample code below can be added directly a "File new project" MAUI app (with a name of "MauiPlayground" to use the same namespaces), or it's all available from my demo code repo. Each example is independent of the other - you can try just one. (Then update App.cs to set MainPage to the right example.)

Both examples have a very simple situation: a control with two-way binding to a view-model, and a button that updates the view-model property (to simulate "the data has been modified elsewhere" in the real app). In both cases, the control remains unchanged visually.

Note that I've specified {Binding ..., Mode=TwoWay} in both cases, even though that's the default for those properties, just to be super-clear that that isn't the problem.

The ViewModelBase code is shared by both examples, and is simply a convenient way of raising INotifyPropertyChanged.PropertyChanged without any extra dependencies:

ViewModelBase.cs:

I'm new to Uno Platform and I created a new project to make some tests.

I would like to add a new control that allows horizontal panning, similar to stories in Instagram or the CollectionView in Net MAUI.

Till now I've tried with an horizontal ListView, but it only works in UWP, neither the Droid project nor Wasm or Skia project.

My actual XAML code is:

I was wondering if anyone else is experiencing this issue with the latest .Net maui preview(Version 17.2.0 Preview 1.0)

I have written some test projects with Maui Preview 10 an 11.

In both Versions there is a 2 pixel height gray line on top of the window that isn't defined in my Application.

It occures on Windows, but not on Android.

Does anyone else the same problem? Does anyone have an idea where it come from?

The Screenshot is from the default Maui Template App, only Changed the background color.

I also tried to set all padding and margins to 0.

Any ideas?

Thanks CeeJay

Screenshot with gray line

I am using the url link to download this dataset:

https://files.hawaii.gov/dbedt/census/census_2020/data/redistricting/PLtable1_2020-county.xlsx

So in R I am coding it as:

What the title says, I've created a Maui App with a Blazor webview, it's kind of great. But on android if I goto app info and "Clear Storage" it nukes the app and it stops working. On the basis that my user data is 500kb and it's reporting 100MB of user storage I'm going to guess that it's clearing the all assets and images out when you hit "Clear Storage" - has anyone found a workaround for this, or am I doing something daft?

Is there a way to create a layout with draggable items in the new .net Maui for mobile apps (Android, Ios and WinApp?

I've been searching what is possible to do in the platform and I haven't found something at the moment.

I use react-dnd together with a react maui tree. My goal is to drag multiple items at once.

My approach is to store all the selected nodes from the tree in useState as an array of ids(strings). On Click on a node the state is updated and I can successfully select multiple nodes.

The problems begin on drag. The item is not updated.