Microcharts | Create cross-platform simple charts | iOS library

I am trying to use Microcharts to display a piechart from some List. I have a method in a different class called DrawSummaryPieChartAsync() to generate that list. When I click on the particular page it fires the associated viewmodel. The problem is that the method is an asynchronous task and so it needs to be awaited. Which means I can't declare it in the constructor of the viewmodel. I have tried many workarounds here on SO but I can't seem to figure how to make them work in my case. So I proceeded to follow the spirit of this post here

VisualDataPage.xaml

I want to remove the default margins in microcharts and stretch the graphic to the end of the frame using xamarin.

My xaml code is:

I set BackgroundImageSource on the screen with this code:

I am working with Xamarin.Forms and I am using Microcharts to create a bar chart.

I am trying to make a bar chart display the number of books entered this week on each day - from Monday to Sunday.

However, when the user views the page on a Sunday, the bar chart displays only the count on Sunday because it is showing the following week for days Mon-Sat.

Instead, the bar chart should display the data from Monday to Sunday this week.

I am learning Xamarin and have added the Microcharts nuget package then added a LineChart to my page and populated with my data and looks great.

I'm looking for documentation on how I can make the chart "interactive", so say if a user touches a datapoint that has label of "2012-01-01" I could grab that in the Touched event and perform a query to retrieve my records for that day?

Can this be easily achieved and if so can you point me to docs for it or advise how? If not can you recommend any better charting packages that I might be better to look at?

Thanks

What i want is, when the value is changed, it should call CreateChart()and use the new values. I try to call in an onPropertyChange method OnValueChanged a bindable Property with reflection, but the property is always null and i dont get the value of the property Value

I'm trying to implement a widget swap for a ToggleSwitch in flutter. So far I have worked around to change the swap of widgets and toggleSwitch separately. I need to combine them so when I select a toggle switch it will show the widget it need to show and when the other toggle switch clicked the second widget come into view. Even when I work that the widgets are swapping, the ToggleSwitch does not change it's state. Please help me in improving this. Many Thanks in advance.

here is the build() code snippet I'm trying to work out.

I have a Xamarin Forms app that shows a picture that is bound to a class (RandomChallenge). The class is generated in the view model and assigned. The class has a Uri property which we want to bind to an image in the view.

When the app loads it doesn't show any picture, even though RandomChallenge is not null. If I make a change to the UI code whilst debugging and save it, when the debugger reloads the image is visible. Its as if the RandomChallenge class gets populated after the page renders? If I was to put a break point on the line RandomChallenge = await ChallengeDataStore.GetRandomChallenge(); RandomChallenge is populated.

ViewModel

I'm using MicroCharts barChart