Questions tagged as 'xamarin'

Tagged questions
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I can not assign a class in the Droid Project that is in the Shared Project

When I create a class in the APP and try to use it in the Droid, it is not recognized in the Droid, even adding the reference to it by the using clause. I create this class: public partial class CircleView : BoxView { public static readonl...
asked by 23.02.2018 / 18:06
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Xamarin.Android with WCF web reference error timeout after 5 times opening the App

Hello, I have App in xamarin portable and in the Android project part I referenced a WCF service, when I enter the app I normally use all the requests without making a mistake, but when I log in, I get in the app for 4 or 5 times. a timeout exce...
asked by 01.03.2018 / 22:41
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Create badge with rounded corners

I'd like to know how I can get my badge to be rectangular with rounded corners. My Badge <Grid xmlns="http://xamarin.com/schemas/2014/forms" xmlns:local="clr-namespace:Estapar.AppOperacional" xmlns:x="http://sch...
asked by 26.02.2018 / 23:49
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Send a message via WhatsApp to a specific contact

I'm trying to send a text message via WhatsApp to a previously selected number. The contact's chat opens, but the message contained in Extras does not appear in the text field. See: var uri = Android.Net.Uri.Parse("smsto:" + "55" + (num...
asked by 21.02.2018 / 15:29
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How to put background color in xamarin imagecell or how to arrange disproportionate size in ViewCell?

follow the code: <ListView ItemsSource="{Binding Lista}" SeparatorVisibility="None" ItemSelected="ListView_Selected" HasUnevenRows="True" IsVisible="{Binding Visivel}" > <ListView.ItemTemplate>...
asked by 14.02.2018 / 15:53
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APK Validation on Google

I have app that I need to validate the data integrity of it. For this, I need to google tell me whether that application was signed by him or not. But for this to work, I need it to generate a token for validation. Is thi...
asked by 14.02.2018 / 11:51
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How to use BidingContext to link Views to a Dictionary?

My Xamarin application has as one of its characteristics, creating forms based on an object. I have had problems saving the data for this form. I have to go through the children of StackLayout then popular Dictionary<string, object>(...
asked by 14.02.2018 / 20:15
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Problem opening Xamarin connection with MySql

I'm a beginner in Xamarin , and I'm having a hard time connecting to MySql . I'm trying to use a simple connection just to test, but it returns an error when I click connect. Unhandled Exception: System.TypeInitializationException...
asked by 08.02.2018 / 18:55
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How to deal with 400 error messages

Work with an application made in xamarin that sends several requests to the api. Eventually, a user action gets a BAD REQUEST because the user tried to enjoy a photo that she had previously enjoyed, or try to follow another user she was already...
asked by 07.02.2018 / 18:16
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AlarmManager Schedule a task during the week

Hello, I want to schedule an sql task to run in the background of my application, in which task it has to start on Tuesday and be run every hour until the task returns data, then the application sends a notification to the user and stops the tas...
asked by 01.02.2018 / 17:07