davidbritch/xamarin-forms

Samples for Xamarin.Forms

xamarin-forms's Issues

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Enterprise-Application-Patterns-using-XamarinForms.pdf
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AnimationDemoPage throws exception when clicking on the button during animation

Hello David,

The AnimationDemoPage throws an exception when clicking on the button during animation:
System.InvalidOperationException: An attempt was made to transition a task to a final state when it had already completed.

I found how to inactivate the button during the animation:

<Button.Behaviors>
<behaviors:EventHandlerBehavior EventName="Clicked">

<behaviors:SetPropertyAction TargetObject="{x:Reference runAnimationButton}" PropertyName="IsEnabled" Value="false" />
<behaviors:SetPropertyAction TargetObject="{x:Reference stopAnimationButton}" PropertyName="IsEnabled" Value="true" />
<behaviors:SetPropertyAction TargetObject="{x:Reference stopAnimationButton}" PropertyName="IsVisible" Value="true" />
...

<behaviors:SetPropertyAction TargetObject="{x:Reference runAnimationButton}" PropertyName="IsEnabled" Value="true" />
<behaviors:SetPropertyAction TargetObject="{x:Reference stopAnimationButton}" PropertyName="IsEnabled" Value="false" />

But I did not find how to cancel the animation by clicking on the "Stop animation" button.
Here what I tried out:
Above code for stopAnimationButton plus:

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms" xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:behaviors="clr-namespace:Behaviors;assembly=Behaviors"
x:Class="Behaviors.Sample.AnimationDemoPage"
x:Name="animationPage"
Title="Animation Demo"
Icon="xaml.png">

    <Button x:Name="stopAnimationButton" Text="Stop animation (ineffective)" IsVisible="true" IsEnabled="false">
        <Button.Behaviors>
            <behaviors:EventHandlerBehavior EventName="Clicked">
                <behaviors:InvokeMethodAction TargetObject="{x:Reference animationPage}" MethodName="OnStopAnimation" />
                <behaviors:SetPropertyAction TargetObject="{x:Reference runAnimationButton}" PropertyName="IsEnabled" Value="true" />
            </behaviors:EventHandlerBehavior>
        </Button.Behaviors>
    </Button>

	public void **OnStopAnimation**(object sender, EventArgs args)
	{
		//KO no animation.Commit(.., "animationID", ...) defined: this.AbortAnimation("animationID";
		//KO still same runtime exception: ViewExtensions.**CancelAnimations**(image);
		ViewExtensions.**CancelAnimations**(this); //KO: no effect (but no exception neither)
	}

Any idea?
Thanks.

Best regards,
Nikolas

IdentityServer configuration?

@davidbritch
Do you have an example of how your Duende (IdentityServer) is configured for the folder demo 'WebAuthenticatorDemo'?

Thanks!

WebAuthenticatorDemo Login error

Tried clicking on the Login button in the WebAuthenticatorDemo, but comes up with the following error - not sure what's needed to get the demo working? I don't see any Readme with directions for it.

Xamarin Web Authenticator with IdentityModel.OidcClient

Hello David,

This look great! I am searching now for a week to get a solutions like the Azure app for IOS.. you get only a cancel button.. i try many options but nothings is working like that.. to hide the default buttons, do you have some tips ?

can put button in action bar?

Hi, your plugin is amaizing, but i cuestion if can add a button on the action bar?
i try to replicate salesforce native android component

thanks.

Never goes back to the app

The codes works well. My issue is, it never goes back to the app after logging in.

[Activity(NoHistory = true, LaunchMode = LaunchMode.SingleTop)]
[IntentFilter(new[] { Android.Content.Intent.ActionView },
	Categories = new[] { Android.Content.Intent.CategoryDefault, Android.Content.Intent.CategoryBrowsable },
	DataScheme = Constants.DataScheme,
	DataHost = Constants.DataHost
	)]
public class WebAuthenticationCallbackActivity : Xamarin.Essentials.WebAuthenticatorCallbackActivity
{
	public WebAuthenticationCallbackActivity()
	{

	}
}

public static class Constants
{
	public const string DataScheme = "oauth2test";
	public const string DataHost = "callback";

	//public static string AuthorityUri = "https://demo.identityserver.io";

	//public static string AuthorizeUri = "https://staging-xoxo.se/Account/login";
	public static string AuthorizeUri = "https://id-staging-xoxo.se/Account/login";

	public static string TokenUri = "https://id-staging-xoxo.se";

	public static string ApiUri = "https://api-staging-xoxo.se";

	public static string RedirectUri = "oauth2test://callback";
	public static string ClientId = "xoxo";
	//public static string ClientSecret = "xoxo";
	public static string Scope = "openid profile api roles userinfo";
}

private async void Button_Clicked(object sender, EventArgs e)
{
	identityService = new IdentityService(new RequestProvider());

	string url = identityService.CreateAuthorizationRequest();

	Debug.WriteLine(url);

	var authresult = await WebAuthenticator.AuthenticateAsync(
			new Uri(url),
			new Uri(Constants.RedirectUri)
			);

	string raw = ParseAuthenticatorResult(authresult);
	authorizeResponse = new AuthorizeResponse(raw);
	if (authorizeResponse.IsError)
	{
		Console.WriteLine("ERROR: {0}", authorizeResponse.Error);
	}
}