Ndtyjky

Hello fellow Xamarin victim,

I'm having an issue with my ListView, where not all items from the itemsource are shown. 6 of the in total 12 items are shown. Here you have my XAML Page where you can see how i use the listview (the listview is used in the middlepart):

<?xml version="1.0" encoding="utf-8" ?>

<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"

         xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"

         x:Class="Prototype_Deinceps.views.subject.DetailPage"

         xmlns:multiplechoices="clr-namespace:Prototype_Deinceps.viewincludes.QuestionTypes;assembly=Prototype_Deinceps"

         xmlns:CustomElements="clr-namespace:Prototype_Deinceps.CustomElements;assembly=Prototype_Deinceps"

         Title="Detail">

<!-- ToolBar -->

<ContentPage.ToolbarItems>

<ToolbarItem Icon="Edit.png">

  <ToolbarItem.Text>

    <OnPlatform x:TypeArguments="x:String"

                iOS="Wijzig"/>

  </ToolbarItem.Text>

</ToolbarItem>

</ContentPage.ToolbarItems>



<Grid>

  <Grid.RowDefinitions>

    <RowDefinition Height="6*" />

    <RowDefinition Height= "9*" />

    <RowDefinition Height="6*" />

  </Grid.RowDefinitions>

  <Grid.ColumnDefinitions>

    <ColumnDefinition Width="*" />

    <ColumnDefinition Width="*" />

  </Grid.ColumnDefinitions>



  <!-- Top part of the screen that consist of basic info of the entity-->

  <StackLayout x:Name="BasicInfo" Margin="10,10,10,5" Grid.Row="0" Grid.Column="0">

    <Label Text="Basic Info" FontSize="Large"/>

    <BoxView Color="Black" WidthRequest ="100" HeightRequest="1"/>

    <Label x:Name="text1" />

    <Label x:Name="text2" />

    <Label x:Name="text3" />

    <Label x:Name="text4" />

  </StackLayout>

  <Image x:Name="EntityImage" Margin="10" Grid.Row="0" Grid.Column="1"/>

  <!-- End of Top -->



  <!-- Middle part of the screen where the questions are displayed about the entity-->

  <StackLayout x:Name="Questions" Margin="5,10,10,0" Grid.Row="1" Grid.ColumnSpan="2">

    <Label Text="Questions" FontSize="Large"/>

    <BoxView Color="Black" WidthRequest ="100" HeightRequest="1"/>

    <ScrollView>

      <ListView x:Name="QuestionListView"

                HasUnevenRows="True"

                ItemTapped="OnItemTapped">

        <ListView.ItemTemplate>

          <DataTemplate>

            <ViewCell>

              <StackLayout x:Name="ListItem" Orientation="Horizontal" >

                <multiplechoices:MultipleChoice x:Name="multi" IsVisible="{Binding isMultipleChoice} "/>

                <multiplechoices:TrueFalse  IsVisible="{Binding isTrueFalse}"/>

                <multiplechoices:Text  IsVisible="{Binding isText}"/>

                <multiplechoices:LineText  IsVisible="{Binding isLineText}"/>                  

            </StackLayout>

            </ViewCell>

          </DataTemplate>

        </ListView.ItemTemplate>

      </ListView>

    </ScrollView>

  </StackLayout>

  <!-- End of Middle -->



  <!-- Bottem part of the screen where you can put a note of the entity and save your info-->

  <StackLayout x:Name="Extra" Margin="0,10,30,5" Grid.Row="2" Grid.ColumnSpan="2">

    <Label Text="Opmerkingen" FontSize="Large"/>

    <BoxView Color="Black" WidthRequest ="100" HeightRequest="1"/>

    <CustomElements:CustomEditor PlaceHolder="Schrijf hier een opmerking..."/>

    <Button Text="Opslaan" HorizontalOptions="EndAndExpand" BackgroundColor="#AB001C" TextColor="White"/>

  </StackLayout>

  <!-- End of Bottom -->



</Grid>

</ContentPage>

Here you have te part where i define what my items are. In a writeline i can see that all 12 items are added to the itemsource. So i doubt the issue is in here, but for the sake of it here is the code behind:

 public partial class DetailPage : ContentPage

{



    public Subject sb;

    int i;

    public DetailPage(Subject subject)

    {

        InitializeComponent();



        sb = subject;

        TapGestureRecognizer tap = new TapGestureRecognizer();

        EntityImage.Source = ImageSource.FromFile("nobody_moriginal.jpg");

        text1.Text = subject.text1;

        text2.Text = subject.text2;

        text3.Text = subject.text3;

        text4.Text = subject.text4;



        tap.Tapped += OnTap;

        BasicInfo.GestureRecognizers.Add(tap);



        QuestionListView.ItemsSource = new List<Question>

        {

            new Question

            {

                Vraag = "1+1=?",

                TypeQuestion = Question.QuestionTypes.MulptipleChoice

            },

            new Question

            {

                Vraag= "Is dit waar?",

                TypeQuestion = Question.QuestionTypes.TrueFalse

            },

            new Question

            {

                Vraag= "Hoe ziet jou leven eruit?",

                TypeQuestion = Question.QuestionTypes.Text

            },

            new Question

            {

                Vraag= "Wat vind u van Tim?(Max 150 karakters)",

                TypeQuestion = Question.QuestionTypes.LineText

            },

            new Question

            {

                Vraag= "Wat vind u van Tim?(Max 150 karakters)",

                TypeQuestion = Question.QuestionTypes.LineText

            },

            new Question

            {

                Vraag= "Wat vind u van Tim?(Max 150 karakters)",

                TypeQuestion = Question.QuestionTypes.LineText

            },

            new Question

            {

                Vraag= "Wat vind u van Tim?(Max 150 karakters)",

                TypeQuestion = Question.QuestionTypes.LineText

            },

            new Question

            {

                Vraag= "Wat vind u van Tim?(Max 150 karakters)",

                TypeQuestion = Question.QuestionTypes.LineText

            },

            new Question

            {

                Vraag= "Wat vind u van Tim?(Max 150 karakters)",

                TypeQuestion = Question.QuestionTypes.LineText

            },

            new Question

            {

                Vraag= "Wat vind u van Tim?(Max 150 karakters)",

                TypeQuestion = Question.QuestionTypes.LineText

            },                new Question

            {

                Vraag= "Hoe ziet jou leven eruit?",

                TypeQuestion = Question.QuestionTypes.Text

            },                new Question

            {

                Vraag= "Hoe ziet jou leven eruit?",

                TypeQuestion = Question.QuestionTypes.Text

            }

        };

    }



    private async void OnTap(object sender, EventArgs e)

    {

        await Navigation.PushAsync(new BasicInfoPage(sb));

    }



    private void OnItemTapped(object sender, ItemTappedEventArgs e)

    {

        if (e == null) return; // has been set to null, do not 'process' tapped event

        ((ListView)sender).SelectedItem = null; // de-select the row

    }

Thank you in advance!

By Default ListView Have internal ScrollView, So you did not need to use ScrollView on your case.

you use ListView inside ScrollView. So maybe all of your items is in ListView, but you can't scroll to them.