Questions tagged as 'xamarin-forms'

Tagged questions
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XAML without previewer or desginer - Visual Studio

I'm using Visual Studio 2015 Community with Xamarin, and I realized that when I edit XAML in designer mode (Shift + F7) I can not see the preview of it because another window with the same font is opened. I can not even see your rendering in Xam...
asked by 07.11.2016 / 03:30
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xamarin forms await is not respected

Good evening, Can someone tell me why the code below does not respect Wait, in debug the output order is 1. init save 2. End Save 3. New header ID: 1 instead of: 1. init save 2. New header ID: 1 3. End Save public asy...
asked by 11.10.2016 / 20:48
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Is the APK made in Xamarin Forms normal, even empty, have 60mb?

I've tried connecting the linker, and be the recommended procedures. I wanted to know if it is normal an apk made using Xamarin.Forms start from 60mb. And if it is not, what to do to reduce the size.     
asked by 22.11.2016 / 19:36
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Recover item from a Picker

I'm having a project in Xamarin Forms and want to retrieve a selected item from a Picker. The Picker is being fed by a list of Objects in its "ItemSource" property and I am showing the values in that list with the "ItemDisplayBindind" propert...
asked by 15.06.2018 / 15:33
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Formatting chart values using Syncfusion for Xamarin Forms

I'm using Syncfusion to create graphics in Xamarin Forms . By studying the documentation , I could not find a way to format the values in my chart, example: IwantthesevaluesformattedforBraziliancurrency:October-R$14,421.52Doesanyonek...
asked by 04.10.2017 / 15:47
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Error: ValueFactory attempted to access the Value property of this instance

Every time I create any Xamarin project in Visual Studio 2017 the following error appears when running the application: Erro: ValueFactory tentou acessar a propriedade Value dessa instância. Why does this error occur? What should I do to...
asked by 29.06.2018 / 18:00
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Error: Your project is not referencing the "MonoAndroid, Version = v8.1" framework

After updating Visual Studio to version 15.7.1 the following message began to appear in my ready projects:    Your project is not referencing the "MonoAndroid, Version = v8.1"   framework. Add a reference to "MonoAndroid, Version = v8.1" in t...
asked by 09.05.2018 / 14:33
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Size of a very large Xamarin Forms application

I recently created an application using Xamarin.Forms, but after launching, it was 15MB in size. My application has a total of 8 pages ( views ) of which only two use images and speaking in images the total size of my resoucers folder is no mo...
asked by 22.08.2018 / 18:03
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Command button does not work inside ListView Xamarin Forms MVVM

I'm trying to create a button with the Command event inside a ListView in MVVM , but it's not falling on the event in ViewModel . How can I make this button Command access your method in ViewModel ? And also...
asked by 26.12.2016 / 14:32
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How to organize this Layout using Xamarin Forms?

I have not been able to organize my layout in my ListView, it is disorganized, I tried to use several forms but so far nothing, I would like to have tips / help. I wish I could have Código at the beginning, Valor in the middle, and...
asked by 19.06.2018 / 16:12