Default constructor not found for type ViewMarkdown.Forms.Plugin.Droid.WebViewBaseUrl

[diescalo]

Hello!

I'm trying to use this package in my application, but I get the following error when I try to instantiate a MarkdownView object. I'm using the latest version of the library (1.0.1-beta) in an Android device.

Default constructor not found for type ViewMarkdown.Forms.Plugin.Droid.WebViewBaseUrl

I added the following line in the OnCreate method of the MainActivity.cs Droid project file:

...
global::Xamarin.Forms.Forms.Init(this, bundle);
MarkdownViewRenderer.Init();
...

(I added it because I saw it in the sample project)

And this is how I try to add a MarkdownView element to a page:

var authorsView = new MarkdownView
	{
		Markdown = "# Hello world!\n\nThis is just a test",
		VerticalOptions = LayoutOptions.StartAndExpand,
		HorizontalOptions = LayoutOptions.StartAndExpand,
		BackgroundColor = Color.Transparent
	};

TextsStack.Children.Add(authorsView);

(TextsStack is a StackLayout of the page)

This is the full stack of the error:

10-16 19:06:20.179 I/MonoDroid(19447): UNHANDLED EXCEPTION:
10-16 19:06:20.213 I/MonoDroid(19447): System.MissingMethodException: Default constructor not found for type ViewMarkdown.Forms.Plugin.Droid.WebViewBaseUrl
10-16 19:06:20.213 I/MonoDroid(19447):   at System.RuntimeType.CreateInstanceMono (System.Boolean nonPublic) [0x0007b] in <0d3e8e8a3e98411ebca0c94b3b240d49>:0 
10-16 19:06:20.213 I/MonoDroid(19447):   at System.RuntimeType.CreateInstanceSlow (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Threading.StackCrawlMark& stackMark) [0x00009] in <0d3e8e8a3e98411ebca0c94b3b240d49>:0 
10-16 19:06:20.213 I/MonoDroid(19447):   at System.RuntimeType.CreateInstanceDefaultCtor (System.Boolean publicOnly, System.Boolean skipCheckThis, System.Boolean fillCache, System.Threading.StackCrawlMark& stackMark) [0x00027] in <0d3e8e8a3e98411ebca0c94b3b240d49>:0 
10-16 19:06:20.213 I/MonoDroid(19447):   at System.Activator.CreateInstance (System.Type type, System.Boolean nonPublic) [0x0002c] in <0d3e8e8a3e98411ebca0c94b3b240d49>:0 
10-16 19:06:20.213 I/MonoDroid(19447):   at System.Activator.CreateInstance (System.Type type) [0x00000] in <0d3e8e8a3e98411ebca0c94b3b240d49>:0 
10-16 19:06:20.213 I/MonoDroid(19447):   at Xamarin.Forms.DependencyService.Get[T] (Xamarin.Forms.DependencyFetchTarget fetchTarget) [0x0006b] in D:\a\1\s\Xamarin.Forms.Core\DependencyService.cs:43 
10-16 19:06:20.213 I/MonoDroid(19447):   at ViewMarkdown.Forms.Plugin.Abstractions.MarkdownView..ctor (ViewMarkdown.Forms.Plugin.Abstractions.LinkRenderingOption linksOption) [0x00006] in C:\Users\anton\Documents\GitHub\MarkdownView2\MarkdownView.Forms.Plugin.Abstractions\MarkdownView.cs:25 
10-16 19:06:20.213 I/MonoDroid(19447):   at ViewMarkdown.Forms.Plugin.Abstractions.MarkdownView..ctor () [0x00000] in C:\Users\anton\Documents\GitHub\MarkdownView2\MarkdownView.Forms.Plugin.Abstractions\MarkdownView.cs:14 
10-16 19:06:20.213 I/MonoDroid(19447):   at XBeeConfigurator.AboutPage..ctor () [0x0001b] in F:\git_projects\xbee_ble_configuration\XBeeConfigurator\XBeeConfigurator\Pages\AboutPage.xaml.cs:43 
10-16 19:06:20.213 I/MonoDroid(19447):   at XBeeConfigurator.ViewModelBase+<OpenAboutPage>d__24.MoveNext () [0x0000f] in F:\git_projects\xbee_ble_configuration\XBeeConfigurator\XBeeConfigurator\ViewModels\ViewModelBase.cs:112 
10-16 19:06:20.213 I/MonoDroid(19447): --- End of stack trace from previous location where exception was thrown ---
10-16 19:06:20.213 I/MonoDroid(19447):   at System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.<ThrowAsync>b__6_0 (System.Object state) [0x00000] in <0d3e8e8a3e98411ebca0c94b3b240d49>:0 
10-16 19:06:20.213 I/MonoDroid(19447):   at Android.App.SyncContext+<>c__DisplayClass2_0.<Post>b__0 () [0x00000] in <af582da7fb294035964740921a102296>:0 
10-16 19:06:20.213 I/MonoDroid(19447):   at Java.Lang.Thread+RunnableImplementor.Run () [0x00008] in <af582da7fb294035964740921a102296>:0 
10-16 19:06:20.214 I/MonoDroid(19447):   at Java.Lang.IRunnableInvoker.n_Run (System.IntPtr jnienv, System.IntPtr native__this) [0x00009] in <af582da7fb294035964740921a102296>:0 
10-16 19:06:20.214 I/MonoDroid(19447):   at (wrapper dynamic-method) System.Object.40(intptr,intptr)

Do you know what could be the issue?

Thanks!

[fferegrino]

Hi, sorry for the late response, can you tell me which version of Xamarin.Forms are you using?

If possible, generate an https://stackoverflow.com/help/mcve so that I can work wth it.