I am trying to build a grid, with the first row fixed during vertically scroll, and the first column fixed during horizontally scroll
Do you know any plugin/component to achieve this ?
Actually for this I use 3 scrollView :
One for the fixed row, with only horizontal scroll
One for the fixed column, with only vertical scroll
One for the other cell, with horizontal and vertical scroll.
Then I have to synchronize the scrollViews, to be sure the alignment is preserved.
This is really ugly to do, and it might be laggy with all this synchronizations...
<StackLayout Spacing="0">
<ScrollView
x:Name="ScrollEnteteSynthese"
Orientation="Horizontal"
Scrolled="ScrollEnteteSynthese_Scrolled"
>
<Grid
x:Name="gridEnteteSynthese"
BackgroundColor="{StaticResource Grey}"
ColumnSpacing="1"
RowSpacing="1"
/>
</ScrollView>
<StackLayout
Orientation="Horizontal"
Spacing="0"
HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand"
>
<ScrollView
x:Name="ScrollColSynthese"
Orientation="Vertical"
Scrolled="ScrollColSynthese_Scrolled"
HorizontalOptions="Fill"
VerticalOptions="FillAndExpand"
WidthRequest="100">
<Grid
x:Name="gridColSynthese"
ColumnSpacing="1"
RowSpacing="1"
BackgroundColor="{StaticResource Grey}"
/>
</ScrollView>
<ScrollView
x:Name="ScrollSynthese"
Orientation="Both"
Scrolled="ScrollSynthese_Scrolled"
HorizontalOptions="FillAndExpand"
VerticalOptions="FillAndExpand"
>
<Grid
x:Name="gridSynthese"
BackgroundColor="{StaticResource GreyLight}"
ColumnSpacing="1"
RowSpacing="1"
/>
</ScrollView>
</StackLayout>
</StackLayout>
Actually, there are many different layout can implement it. For example
<StackLayout VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand">
<Grid HeightRequest="300" >
<Grid.RowDefinitions>
<RowDefinition Height="50" />
<RowDefinition Height="350" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0.2*"/>
<ColumnDefinition Width="0.8*"/>
</Grid.ColumnDefinitions>
<Frame Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="2" Padding="0">
<ScrollView BackgroundColor="LightBlue" VerticalScrollBarVisibility="Never" HorizontalScrollBarVisibility="Never">
<StackLayout Orientation="Horizontal">
//...
</StackLayout>
</ScrollView>
</Frame>
<Frame Grid.Row="1" Grid.Column="0" Padding="0" Margin="0,-5,0,0">
<ScrollView BackgroundColor="LightGreen" VerticalScrollBarVisibility="Never" HorizontalScrollBarVisibility="Never">
<StackLayout Orientation="Vertical">
//...
</StackLayout>
</ScrollView>
</Frame>
<Frame Grid.Row="1" Grid.Column="1" Padding="0" Margin="-5,-5,0,0">
<Grid Grid.Row="1" Grid.Column="1" BackgroundColor="LightPink">
//
</Grid>
</Frame>
</Grid>
</StackLayout>
Related
I have the below XAML structure using a collection view which is using a list called 'users' as its ItemSource. I have a bound property which controls if the items are visible or not :
<StackLayout Orientation="Horizontal">
<Frame IsVisible="{Binding isVisible}" HasShadow="True" BackgroundColor="White" Padding="0">
The issue is that unless I remove the StackLayout around the Frame then the IsVisible binding doesn't work. Does anyone know why the binding works without the StackLayout, but not with ?
<CollectionView Grid.Row="1" x:Name="users" IsGrouped="True" SelectionMode="Single">
<CollectionView.GroupHeaderTemplate>
<DataTemplate>
<StackLayout Orientation="Horizontal" MinimumHeightRequest="200" BackgroundColor="{Binding tint_colour}">
<Image Source="{Binding school_image}" WidthRequest="120" HeightRequest="100"/>
<Label Text="{Binding organisation_title}"
TextColor="{Binding font_colour}"
FontSize="Large"
FontAttributes="Bold"
VerticalTextAlignment="Center"></Label>
<StackLayout.GestureRecognizers>
<TapGestureRecognizer Tapped="HeaderTapped" CommandParameter="{Binding organisation_title}"></TapGestureRecognizer>
</StackLayout.GestureRecognizers>
</StackLayout>
</DataTemplate>
</CollectionView.GroupHeaderTemplate>
<CollectionView.ItemsLayout>
<LinearItemsLayout Orientation="Vertical" ItemSpacing="1"/>
</CollectionView.ItemsLayout>
<CollectionView.ItemTemplate>
<DataTemplate>
<StackLayout Orientation="Horizontal">
<Frame IsVisible="{Binding isVisible}" HasShadow="True" BackgroundColor="White" Padding="0">
<Grid VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand">
<behaviors:Expander x:Name="MainExpander" CollapseAnimationLength="500" IsExpanded="False" IsVisible="True" >
<behaviors:Expander.Header>
<Grid HorizontalOptions="FillAndExpand">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"/>
<ColumnDefinition Width="10"/>
</Grid.ColumnDefinitions>
<Frame HeightRequest="40" WidthRequest="40" CornerRadius="20" HorizontalOptions="Start" VerticalOptions="Center" Margin="20" Padding="0" BackgroundColor="Maroon">
<Label Text="{Binding student_initial}" TextColor="White" HorizontalOptions="Center" VerticalOptions="Center" HorizontalTextAlignment="Center" VerticalTextAlignment="Center" />
</Frame>
<StackLayout Grid.Column="2" HorizontalOptions="StartAndExpand" VerticalOptions="Center" Margin="20">
<Label IsVisible="{Binding isVisible}" x:Name="StudentName" Text="{Binding student_fullname}"></Label>
<Label x:Name="StudentID" IsVisible="false" Text="{Binding student_unique_id}"></Label>
</StackLayout>
</Grid>
</behaviors:Expander.Header>
<Grid RowSpacing="0" HorizontalOptions="FillAndExpand" HeightRequest="240" VerticalOptions="FillAndExpand">
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Button Grid.Row="0" Text="Messages" Clicked="Button_Clicked"></Button>
<Button x:Name="btnTopUp" Grid.Row="1" Text="Quick Topup" Clicked="Button_Clicked" IsVisible="{Binding topup_product_id, Converter={StaticResource IsNotNullOrEmptyConverter}}"></Button>
<Button Grid.Row="2" Text="Payments" Clicked="Button_Clicked"></Button>
</Grid>
<!-- TODO: Look at adding a balance for childrens topups? -->
</behaviors:Expander>
</Grid>
</Frame>
</StackLayout>
</DataTemplate>
</CollectionView.ItemTemplate>
</CollectionView>
I did a test about it and it works fine, here are xaml and codebehind:
xmal:
<StackLayout>
<CollectionView x:Name="mycol">
<CollectionView.ItemTemplate>
<DataTemplate>
<StackLayout >
<Frame BackgroundColor="Red" IsVisible="{Binding isvisible}">
<Label Text="{Binding Name}"/>
</Frame>
</StackLayout>
</DataTemplate>
</CollectionView.ItemTemplate>
</CollectionView>
</StackLayout>
codebehind:
public partial class CollectionTest : ContentPage
{
ObservableCollection<People> peoples = new ObservableCollection<People> {
new People{ Name="Adam",isvisible=true},
new People{ Name="Bob",isvisible=true},
new People {Name="Adam2",isvisible=false },
new People{ Name="Bob2",isvisible=true} };
public CollectionTest()
{
InitializeComponent();
mycol.ItemsSource = peoples;
}
I have a problem. I want created this ListView using the following code:
<?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:d="http://xamarin.com/schemas/2014/forms/design"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
x:Class="MyApp.HomePage">
<ContentPage.Content>
<ListView x:Name="ListViewMain" VerticalOptions="FillAndExpand" BackgroundColor="#212121" SelectionMode="None">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<Grid x:Name="GridMain">
<Grid.RowDefinitions>
<RowDefinition Height="40" x:Name="Row0_Height"/>
<RowDefinition Height="180" x:Name="Row1_Height"/>
<RowDefinition Height="180" x:Name="Row2_Height"/>
<RowDefinition Height="40" x:Name="Row3_Height"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="40" x:Name="Column0_Width" />
<ColumnDefinition Width="*" x:Name="Column1_Width" />
<ColumnDefinition Width="40" x:Name="Column2_Width" />
</Grid.ColumnDefinitions>
<Label Text="{Binding Creator}" TextColor="White" FontSize="Body" FontAttributes="Bold" Grid.Column="1" Grid.Row="0" VerticalOptions="Center" HorizontalOptions="Start"/>
<Image Source="VoteUp.png" VerticalOptions="End" HorizontalOptions="Center" Grid.Row="1" Grid.Column="0">
<Image.GestureRecognizers>
<TapGestureRecognizer Tapped="imgVoteUp_Clicked" />
</Image.GestureRecognizers>
</Image>
<Image Source="VoteDown.png" VerticalOptions="Start" HorizontalOptions="Center" Grid.Row="2" Grid.Column="0">
<Image.GestureRecognizers>
<TapGestureRecognizer Tapped="imgVoteDown_Clicked" />
</Image.GestureRecognizers>
</Image>
<Image Source="{Binding ImageLocation}" Grid.Column="1" Grid.ColumnSpan="2" Grid.Row="1" Grid.RowSpan="2" BackgroundColor="AliceBlue" VerticalOptions="Fill" HorizontalOptions="Fill"/>
<Image Source="Favorite.png" Grid.Row="3" Grid.Column="1" HorizontalOptions="Start">
<Image.GestureRecognizers>
<TapGestureRecognizer Tapped="imgFavorite_Clicked" />
</Image.GestureRecognizers>
</Image>
<Image Source="Send_Dark.png" Grid.Row="3" Grid.Column="1" HorizontalOptions="End"/>
<Image Source="Save_Dark.png" Grid.Row="3" Grid.Column="2" HorizontalOptions="End"/>
</Grid>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</ContentPage.Content>
</ContentPage>
But now I want to add a line above the first Label tag. To create the line I want I use this code:
<Label HeightRequest="1" BackgroundColor="#E3E3E3" />
But I don't know where to put it and how, because it is a Grid. I want to add it before the Grid, but that gives me the error:
The property 'View' is set more than once.
What am I doing wrong and how can I fix this?
I would use a BoxView instead of a Label. You could use this layout, placing the BoxView in the same Row as the Label, but vertically aligned
the other things you could try
add another row to the Grid for the BoxView
place the Grid inside of a StackLayout with the BoxView
We've got an simple collection view for horizontal items. See code below.
<CollectionView ItemsSource="{Binding Items}" ItemsLayout="HorizontalList" ItemSizingStrategy="MeasureFirstItem" HorizontalOptions="StartAndExpand" VerticalOptions="Start" Grid.Row="1">
<CollectionView.ItemTemplate>
<DataTemplate>
<Grid Padding="10">
<Grid.GestureRecognizers>
<TapGestureRecognizer Tapped="Item_Tapped" CommandParameter="{Binding .}"></TapGestureRecognizer>
</Grid.GestureRecognizers>
<Grid.RowDefinitions>
<RowDefinition Height="150" />
<RowDefinition Height="35" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="150" />
</Grid.ColumnDefinitions>
<Image
Source="{Binding ImageUrl}"
HorizontalOptions="Fill"
VerticalOptions="Fill"
Aspect="AspectFill"
HeightRequest="60"
WidthRequest="60" />
<Label
HorizontalOptions="Center"
Grid.Row="1"
Text="{Binding Title}"
FontAttributes="Bold"
LineBreakMode="TailTruncation" />
</Grid>
</DataTemplate>
</CollectionView.ItemTemplate>
</CollectionView>
On android this works great and I've got items stand neatly next to each other. On iOS the items are overlapping each other. Cannot find why this doesn't work on iOS.
Hi I am creating an expanding ListView in Xamarin Forms. I have taken a grid with two rows. First height as 50.. and Second as AUTO... When I am clicking on first row and making the below row Visible. The below row becomes Visible but height of cell remains same.. I have made ListView rows as Uneven also.. Please find the code below
<localRenderer:NativeListView x:Name="SkillsListView"
HasUnevenRows="true"
AbsoluteLayout.LayoutFlags="All"
AbsoluteLayout.LayoutBounds="0,0,1,1"
Margin="5,5,5,5"
SelectionMode="None"
BackgroundColor="#F3F4F6"
SeparatorVisibility="None"
>
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<Grid
HorizontalOptions="FillAndExpand"
VerticalOptions="FillAndExpand"
Padding="0">
<Grid.RowDefinitions>
<RowDefinition Height="50"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<AbsoluteLayout HorizontalOptions="FillAndExpand"
VerticalOptions="Fill"
HeightRequest="50"
Grid.Row="0"
BackgroundColor="#F3F4F5">
<AbsoluteLayout Margin="5,5,5,5" AbsoluteLayout.LayoutFlags="All"
AbsoluteLayout.LayoutBounds="0,0,1,1"
BackgroundColor="#FCFCFD">
<Label Text="{Binding SkillCode}"
FontFamily="Roboto#300"
FontSize="16"
FontAttributes="None"
TextColor="#FF888888"
Margin="10,0,0,0"
AbsoluteLayout.LayoutBounds="0,0.5,-1,-1"
AbsoluteLayout.LayoutFlags="PositionProportional" />
<Image x:Name="statusButton"
Margin="0,0,20,0"
Source="{Binding StateIcon}" HeightRequest="7" WidthRequest="13" AbsoluteLayout.LayoutBounds="1,0.5,-1,-1" AbsoluteLayout.LayoutFlags="PositionProportional" />
<Button AbsoluteLayout.LayoutFlags="All"
AbsoluteLayout.LayoutBounds="0,0,1,1" BackgroundColor="Transparent" Clicked="SkillListHeaderTapped" CommandParameter="{Binding .}" />
</AbsoluteLayout>
</AbsoluteLayout>
<Editor Text="{Binding Description}"
FontFamily="Roboto#300"
FontSize="16"
IsEnabled="false"
IsVisible="{Binding IsVisible}"
Margin="10,0,0,10"
BackgroundColor="White"
FontAttributes="None"
Grid.Row="1"
TextColor="#FF686868"
/>
</Grid>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</localRenderer:NativeListView>
I have Xamarin Forms app. My page bottom should look like this:
Currently it looks like this:
Problem is that StackLayout doesn't expand to fill space. Here is my xaml:
<StackLayout Orientation="Horizontal" HorizontalOptions="FillAndExpand" VerticalOptions="End" Spacing="0" >
<Grid ColumnSpacing="0" RowSpacing="0" HorizontalOptions="FillAndExpand">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="40" />
</Grid.RowDefinitions>
<StackLayout HorizontalOptions="CenterAndExpand" Grid.Column="0" Grid.Row="1" BackgroundColor="Blue" >
<Label Text="First" TextColor="#FFFFFF" HorizontalOptions="CenterAndExpand" />
</StackLayout>
<StackLayout HorizontalOptions="CenterAndExpand" Grid.Column="1" Grid.Row="1" BackgroundColor="Red" >
<Label Text="Second" TextColor="#FFFFFF" HorizontalOptions="CenterAndExpand" />
</StackLayout>
</Grid>
</StackLayout>
How can I expand StackLayout inside Grid? I would like that blue and red backgrounds touch in the middle.
You set the StackLayouts to CenterAndExpand, which means they will only take up as much room as they need. You should FillAndExpand them like:
<StackLayout Orientation="Horizontal" HorizontalOptions="FillAndExpand" VerticalOptions="End" Spacing="0" >
<Grid ColumnSpacing="0" RowSpacing="0" HorizontalOptions="FillAndExpand">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="40" />
</Grid.RowDefinitions>
<StackLayout HorizontalOptions="FillAndExpand" Grid.Column="0" Grid.Row="1" BackgroundColor="Blue" >
<Label Text="First" TextColor="#FFFFFF" HorizontalOptions="CenterAndExpand" />
</StackLayout>
<StackLayout HorizontalOptions="FillAndExpand" Grid.Column="1" Grid.Row="1" BackgroundColor="Red" >
<Label Text="Second" TextColor="#FFFFFF" HorizontalOptions="CenterAndExpand" />
</StackLayout>
</Grid>
</StackLayout>
I know its an old thread - just stumbled on this as part of trying to solve the same problem.
"FillAndExpand" isn't the magic bullet however. You can see in this code that every nested element including the Grid is set to FillAndExpand, yet there's not expanding taking place.
<ScrollView
x:Name="rightScroll"
Grid.Row="0"
Grid.RowSpan="2"
Grid.Column="1"
Margin="0"
HorizontalOptions="FillAndExpand"
VerticalOptions="FillAndExpand"
BackgroundColor="Yellow">
<FlexLayout
Margin="0"
Padding="0"
AlignContent="Start"
AlignItems="Start"
BindableLayout.ItemsSource="{Binding CurrentIncidentReport.Photos}"
Direction="Column"
HorizontalOptions="FillAndExpand"
JustifyContent="SpaceBetween"
VerticalOptions="FillAndExpand">
<BindableLayout.ItemTemplate>
<DataTemplate>
<Grid HorizontalOptions="FillAndExpand" BackgroundColor="DarkOrange">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="80"/>
<ColumnDefinition x:Name="textColumn"/>
</Grid.ColumnDefinitions>
<Image
Grid.Column="0"
Aspect="Fill"
HeightRequest="{StaticResource IconSize}"
Source="{Binding Photo.Source}"
VerticalOptions="CenterAndExpand"
WidthRequest="{StaticResource IconSize}" />
<!-- The editor sizes in jumps matching text size. Have to size the image to the editor not the other way around -->
<Frame
Grid.Column="1"
Margin="0"
Padding="3"
BorderColor="Red"
HeightRequest="{StaticResource IconSize}"
HorizontalOptions="FillAndExpand">
<Frame.Triggers>
<DataTrigger
Binding="{Binding HasValidDescription}"
TargetType="Frame"
Value="True">
<Setter Property="BorderColor" Value="Transparent" />
</DataTrigger>
</Frame.Triggers>
<controls:CustomEditor
x:Name="descEditor"
Margin="0,4,0,4"
BackgroundColor="White"
HorizontalOptions="FillAndExpand"
Keyboard="Chat"
Placeholder="Enter description of photo"
PlaceholderColor="Gray"
Text="{Binding Description, Mode=TwoWay}"
TextColor="Black"
Unfocused="CustomEditor_Unfocused" />
</Frame>
</Grid>
</DataTemplate>
</BindableLayout.ItemTemplate>
</FlexLayout>
</ScrollView>