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x:Reference Array

I've got an IMarkupExtension like so: <controls:TouchableView x:Name="touchGrid" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand" AffectedStatefulObjects="{ext:StatefulMarkup...

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Webview not Scrollable using Shell

I'm using Shell in Xamarin 4.1 for a New Project. And I tried everything but I can't make this WebView to be Scrollable. <StackLayout> <ScrollView VerticalOptions="FillAndExpand">...

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This APK results in unused code and resources being sent to users?

why google shows below warning for App Bundles? I mean it is clear that google wants us to use app bundles and this is why we see this warning but how does google now my app has unused code and...

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Best solution to implement realtime sockets?

Hi guys, I'm giving up with SignalR, as an exception is always occuring when turning on airplane mode / turning off WiFi. (Fatal signal 11 SIGSEGV) Is there any other library you can recommend me to...

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NaN is not a valid value for width

I have this error in my xamarin app whe I testing in iOS 11.0 or higher : NaN is not a valid value for width, any one can help me with that??. I use xamarin.forms version 2.5.0.280555

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Connect to backend web api on Android Emulator

Hi, I'm using visual studio 2019. I created new xamarin project, chose tabbed template and included backend web api. I tested the app on android emulator, it worked perfectly when using MockDataStore...

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How to resize AdControl in UWP dynamically ?

I have implemented banner ads in UWP. It works fine but i cant figure out how to refresh or resize the ad if user changes the size of UWP app in desktop. Code looks like as below. OnElementChanged is...

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Xamarin Forms Bluetooth Classic--Emergency!!

I am trying to write an app about listing the bluetooth device and connect with them with xamarin forms. I found a code from internet but it is for BLE and looks good, however, my target device is...

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Edit code during debug session on Android

Hi guys! This seems to be a quite noobish problem, nonetheless, still encountering the issue... Some details: Xamarin Forms, PCL, Android emulator. Is there any way to edit the code during a debug...

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How to handle CollectionView ItemTapped?

Hi everybody! I'm using CollectioView Now I want handle ItemTapped from MVVM. Currently I use SelectedItem but the Item selected will be change the color, I don't want it. I can not find ItemTapped in...

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Xamarin Forms TableView Color Binding doesnt work

hi, I'm building an interface for a settings page of an app. Currently I am at the themes of the app. Everything works very well. The colors are exchanged automatically against the new ones (header,...

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How to Integrate CCAvenue Payment Gateway in Xamarin Forms?

I have a CCAvenue account which I am using for my website Payment Gateway. Now I need it for my Mobile Application. Does any one have example or document for integrating CCAvenue in Xamarin Forms App?

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How to upload image in firebase realtime database using xamarin forms?

How to upload image in firebase realtime database,or how to bind url with firebase storage..can any1 help me?

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BindableProperty does not notify when its property is set

Hi all, I am developing my own DynamicGrid and I have added to it BindableProperty: public static readonly BindableProperty DynamicRowDefinitionProperty = BindableProperty.Create( // Or...

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Background task even when the app is closed

Hi All, i am building an Xamarin Forms App which retrieves location data from the device when its running as background service and when its connected to the server it would send the gps data to the...

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Child rendering behaviour mismatched after upgrading Xamarin.Forms (>4.0) in...

Hi All, I have a simple sample with the layout structure be like, FlexLayout has more number of Grid (MainGrid ) which has two children Grid with Label as a child Custom View (TouchView) which is...

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Build Problem Xamarin.iOS on new project

Hello everybody, I'm facing a strange problem regarding Xamarin.iOS (in Xamarin.Forms projects). Since 2 days, I'm unable to build Xamarin.iOS project with a strange error regarding "netstandard" :...

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How do I proceed? General question on data storing and defining variables

Hi there, I need a bit of advice on a project I am supposed to do. The goal is to create an App that runs on Windows and Android that allows the user to enter data (mainly int) which are then used to...

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How to implement splitview in already created xamarin project ?

I have one Xamarin Application, while developing we only focused on look and feel for iphone. Now we want to implement SplitView for some page in our application. But it is giving run time error :...

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A good way to reproduce a cartoon-like tone?

I made a paint software using SkiaSharp. https://github.com/satochibi/UgomemoPro Unlike other software, it reproduces cartoon-like tones. As we use "SetPixel" of "SKBitmap" extensively, Every time you...

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