I have defined a CarouselView in XAML as follows:
<?xml version="1.0" encoding="UTF-8"?>
<ContentPage
xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:controls="clr-namespace:CarouselView.FormsPlugin.Abstractions;assembly=CarouselView.FormsPlugin.Abstractions"
x:Class="Youni.PresentationPage">
<controls:CarouselViewControl
x:Name="Carousel"
Orientation="Vertical"
IsSwipingEnabled="false"
VerticalOptions="FillAndExpand"
HorizontalOptions="FillAndExpand">
<controls:CarouselViewControl.ItemsSource>
<x:Array
Type="{x:Type View}">
<ScrollView>
<AbsoluteLayout
Padding="0"
Margin="0">
<Image
Source="login_icon.png"
AbsoluteLayout.LayoutBounds=".5, .0, .3, .3"
AbsoluteLayout.LayoutFlags="All" />
<StackLayout
Orientation="Vertical"
AbsoluteLayout.LayoutBounds=".5, .5, .9, .35"
AbsoluteLayout.LayoutFlags="All">
<Label
Text="Unisciti a Youni!"
FontSize="Large"
FontAttributes="Bold"
XAlign="Center" />
<Entry
x:Name="NameEntry"
VerticalOptions="FillAndExpand"
Placeholder="Nome" />
<Entry
x:Name="SurnameEntry"
VerticalOptions="FillAndExpand"
Placeholder="Cognome" />
<Entry
x:Name="NewEmailEntry"
VerticalOptions="FillAndExpand"
Placeholder="Email"
Keyboard="Email" />
<Entry
x:Name="NewPasswordEntry"
VerticalOptions="FillAndExpand"
Placeholder="Password"
IsPassword="true" />
</StackLayout>
<Button
x:Name="RegisterButton"
Clicked="Register_Handle_Clicked"
AbsoluteLayout.LayoutBounds=".5, .85, .3, .07"
AbsoluteLayout.LayoutFlags="All"
Text="Registrati"
TextColor="White"
BackgroundColor="#3A8FDA" />
<StackLayout
Orientation="Horizontal"
HorizontalOptions="Center"
AbsoluteLayout.LayoutBounds=".5, 1, 1, .1"
AbsoluteLayout.LayoutFlags="All">
<StackLayout.Spacing>
<OnPlatform
x:TypeArguments="x:Double">
<On
Platform="Android"
Value="-10" />
<On
Platform="iOS"
Value="3" />
</OnPlatform>
</StackLayout.Spacing>
<Label
Text="Sei già registrato?"
FontSize="Small"
YAlign="Center"
XAlign="Center" />
<Button
x:Name="LoginSwitchButton"
Pressed="LoginSwitch_Handle_Pressed"
Released="LoginSwitch_Handle_Released"
Clicked="LoginSwitch_Handle_Clicked"
Text="Passa al login"
FontSize="Small"
TextColor="#45BFEE"
BackgroundColor="Transparent" />
</StackLayout>
</AbsoluteLayout>
</ScrollView>
<ScrollView>
<AbsoluteLayout
Padding="0"
Margin="0">
<Image
Source="login_icon.png"
AbsoluteLayout.LayoutBounds=".5, .215, .3, .3"
AbsoluteLayout.LayoutFlags="All" />
<StackLayout
Orientation="Vertical"
AbsoluteLayout.LayoutBounds=".5, .6, .9, .14"
AbsoluteLayout.LayoutFlags="All">
<Entry
x:Name="EmailEntry"
VerticalOptions="FillAndExpand"
Placeholder="Email"
Keyboard="Email" />
<Entry
x:Name="PasswordEntry"
VerticalOptions="FillAndExpand"
Placeholder="Password"
IsPassword="true" />
</StackLayout>
<Button
x:Name="LoginButton"
Clicked="Login_Handle_Clicked"
AbsoluteLayout.LayoutBounds=".5, .85, .3, .07"
AbsoluteLayout.LayoutFlags="All"
Text="Login"
TextColor="White"
BackgroundColor="#3A8FDA" />
<StackLayout
Orientation="Horizontal"
HorizontalOptions="Center"
AbsoluteLayout.LayoutBounds=".5, 1, 1, .1"
AbsoluteLayout.LayoutFlags="All">
<StackLayout.Spacing>
<OnPlatform
x:TypeArguments="x:Double">
<On
Platform="Android"
Value="-10" />
<On
Platform="iOS"
Value="3" />
</OnPlatform>
</StackLayout.Spacing>
<Label
Text="Ancora senza account?"
FontSize="Small"
YAlign="Center"
XAlign="Center" />
<Button
x:Name="RegistrationSwitchButton"
Pressed="RegistrationSwitch_Handle_Pressed"
Released="RegistrationSwitch_Handle_Released"
Clicked="RegistrationSwitch_Handle_Clicked"
Text="Registrati"
FontSize="Small"
TextColor="#45BFEE"
BackgroundColor="Transparent" />
</StackLayout>
</AbsoluteLayout>
</ScrollView>
</x:Array>
</controls:CarouselViewControl.ItemsSource>
</controls:CarouselViewControl>
</ContentPage>
In the code-behind, I can handle the buttons Clicked events, but I can't access any of the views (entries, buttons, images etc...). Always throws System.NullReferenceException. Seems like all the views are null, which does not make sense.
Stack trace:
System.NullReferenceException: Object reference not set to an instance of an object
at Youni.PresentationPage+d__5.MoveNext () [0x00034] in /Users/Max/Documents/Xamarin/Youni/Youni/Youni/PresentationPage.xaml.cs:51
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw () [0x0000c] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.3.0.47/src/mono/mcs/class/referencesource/mscorlib/system/runtime/exceptionservices/exceptionservicescommon.cs:151
at System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.b__6_0 (System.Object state) [0x00000] in /Library/Frameworks/Xamarin.iOS.framework/Versions/11.3.0.47/src/mono/mcs/class/referencesource/mscorlib/system/runtime/compilerservices/AsyncMethodBuilder.cs:1018
at UIKit.UIKitSynchronizationContext+c__AnonStorey0.<>m__0 () [0x00000] in /Users/builder/data/lanes/5520/51128b8c/source/xamarin-macios/src/UIKit/UIKitSynchronizationContext.cs:24
at Foundation.NSAsyncActionDispatcher.Apply () [0x00000] in /Users/builder/data/lanes/5520/51128b8c/source/xamarin-macios/src/Foundation/NSAction.cs:163
at at (wrapper managed-to-native) UIKit.UIApplication:UIApplicationMain (int,string[],intptr,intptr)
at UIKit.UIApplication.Main (System.String[] args, System.IntPtr principal, System.IntPtr delegate) [0x00005] in /Users/builder/data/lanes/5520/51128b8c/source/xamarin-macios/src/UIKit/UIApplication.cs:79
at UIKit.UIApplication.Main (System.String[] args, System.String principalClassName, System.String delegateClassName) [0x00038] in /Users/builder/data/lanes/5520/51128b8c/source/xamarin-macios/src/UIKit/UIApplication.cs:63
at Youni.iOS.Application.Main (System.String[] args) [0x00001] in /Users/Max/Documents/Xamarin/Youni/Youni/iOS/Main.cs:17