good afternoon, i have a listview with grid with two labels in the first column and an image in the second column, it happens that the image is disrespecting, without the image the label is in the correct size.
My problem is that the label doesn’t show all her content when it has the image
When you have the image the labels are wrong. image with resized error
Without the image, which would be expected but I don't know how to fix it for the cells to resize
error-free image
I've tried everything, if anyone can help me thank you
mycode
<ListView
x:Name="ListView_ListaRotas"
HasUnevenRows="True"
IsPullToRefreshEnabled="True"
ItemTapped="ListView_ListaRotas_ItemTapped"
Refreshing="ListView_ListaRotas_Refreshing"
SeparatorVisibility="None">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<Frame
Margin="0,5"
Padding="5,0"
BorderColor="Gray"
Opacity="{Binding PermiteCheck, Converter={StaticResource Key=OpacityConverter}}">
<Grid
Margin="0"
Padding="1,0"
ColumnSpacing="0"
RowSpacing="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<StackLayout HorizontalOptions="StartAndExpand" VerticalOptions="CenterAndExpand">
<Label
FontAttributes="Bold"
FontSize="18"
HorizontalTextAlignment="Start"
Text="{Binding Ds_Observacao}"
VerticalTextAlignment="Start" />
<StackLayout Orientation="Horizontal">
<Label
FontSize="Medium"
Text="{Binding Nm_Posto}"
VerticalTextAlignment="Center" />
<Image
Aspect="AspectFit"
HeightRequest="20"
IsVisible="{Binding HasSketch}"
Source="rascunho.png"
WidthRequest="20" />
</StackLayout>
</StackLayout>
<Image
Grid.Column="1"
Aspect="AspectFit"
HorizontalOptions="EndAndExpand"
Source="{Binding TimeLine}"
VerticalOptions="Center" />
</Grid>
</Frame>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
Related
I do have the following XAML code. And the output is as shown below in the picture. How can I achieve to fill the image within its grid in the frame? Thank you for your help.
<CollectionView.ItemTemplate>
<DataTemplate>
<Grid Padding="10,20,10,0">
<Frame
Margin="5"
BackgroundColor="AntiqueWhite"
CornerRadius="20"
HasShadow="True"
HeightRequest="200"
HorizontalOptions="FillAndExpand">
<Grid RowDefinitions="7*,3*">
<Image
Grid.Row="0"
x:DataType="products:PopularProduct"
Aspect="AspectFill"
HorizontalOptions="FillAndExpand"
Source="{Binding FullImageUrl}"
VerticalOptions="FillAndExpand" />
</Grid>
</Frame>
</Grid>
</DataTemplate>
</CollectionView.ItemTemplate>
I would make use of StackLayout with something like this
<CollectionView.ItemTemplate>
<DataTemplate>
<StackLayout
HorizontalOptions="FillAndExpand"
Orientation="Horizontal"
VerticalOptions="FillAndExpand">
<Frame
Margin="10,20,10,20"
Padding="0"
BackgroundColor="AntiqueWhite"
HasShadow="False"
HeightRequest="200"
HorizontalOptions="FillAndExpand">
<StackLayout Orientation="Vertical">
<Frame
Padding="0"
CornerRadius="20"
HasShadow="True"
IsClippedToBounds="True">
<Grid RowDefinitions="7*,3*">
<Image
Grid.Row="0"
x:DataType="products:PopularProduct"
Aspect="AspectFill"
HorizontalOptions="FillAndExpand"
Source="{Binding FullImageUrl}"
VerticalOptions="FillAndExpand" />
<StackLayout
Grid.Row="1"
Margin="10"
Orientation="Vertical">
<Label Text="Any label if you want here" />
</StackLayout>
</Grid>
</Frame>
</StackLayout>
</Frame>
</StackLayout>
</DataTemplate>
</CollectionView.ItemTemplate>
I modify the sample https://learn.microsoft.com/zh-tw/samples/xamarin/xamarin-forms-samples/userinterface-xaminals/ ,
replace the collectionview with listview . after replacing I found the listview cannot scroll to bottom (there are total 17 items , but only show 6 items)
This error only happen on Android,but it works well on IOS.
How to solve this problem?
<?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:Xaminals.Controls"
xmlns:data="clr-namespace:Xaminals.Data"
x:Class="Xaminals.Views.MonkeysPage"
Title="Monkeys">
<RelativeLayout
VerticalOptions="FillAndExpand"
HorizontalOptions="FillAndExpand">
<StackLayout Orientation="Vertical"
VerticalOptions="FillAndExpand"
Padding="10">
<ListView ItemsSource="{x:Static data:MonkeyData.Monkeys}"
x:Name="CollectionView1"
RowHeight="100">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<Grid VerticalOptions="CenterAndExpand" Padding = "20, 0" >
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Image
Grid.RowSpan="2"
Aspect="AspectFill"
HeightRequest="60"
Source="{Binding ImageUrl}"
WidthRequest="60" />
<Label
Grid.Row="0"
Grid.Column="1"
FontAttributes="Bold"
Text="{Binding Name}" />
<Label
Grid.Row="1"
Grid.Column="1"
FontAttributes="Italic"
Text="{Binding Price}"
VerticalOptions="End" />
<Image Grid.Row="2" Grid.Column="0" Source="bear.png" HeightRequest="25" WidthRequest="25">
<Image.GestureRecognizers>
<TapGestureRecognizer
NumberOfTapsRequired="1" />
</Image.GestureRecognizers>
</Image>
</Grid>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</StackLayout>
<ActivityIndicator x:Name="activityIndicator" Color="Red" VerticalOptions="CenterAndExpand" HorizontalOptions="CenterAndExpand" RelativeLayout.XConstraint="{ConstraintExpression Type=RelativeToParent, Property=Height, Factor=0.33}" RelativeLayout.YConstraint="{ConstraintExpression Type=RelativeToParent, Property=Height,Factor=0.33}" />
</RelativeLayout>
</ContentPage>
The solution is change the RelativeLayout to Stacklayout:
<StackLayout
VerticalOptions="FillAndExpand"
HorizontalOptions="FillAndExpand">
<StackLayout Orientation="Vertical"
VerticalOptions="FillAndExpand"
Padding="10">
<ListView ItemsSource="{x:Static data:MonkeyData.Monkeys}"
x:Name="CollectionView1"
RowHeight="100">
.....
</ListView>
</StackLayout>
</StackLayout>
If you want to use RelativeLayout, you need to use XConstraint, YConstraint,WidthConstraint,HeightConstraint to layout the child view instead of VerticalOptions="FillAndExpand", HorizontalOptions="FillAndExpand".
i would like to create a view like this :
. Where Contact1, Contact2 are models and ListViewis a list of these models.
Now i have code like this but i dont get the desired output.
<?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="KiaiDay.Pages.ConviteEmailPage"
NavigationPage.TitleView="Convive por email"
NavigationPage.HasBackButton="True"
NavigationPage.BackButtonTitle="Voltar"
BackgroundColor="AliceBlue">
<ContentPage.Content>
<AbsoluteLayout>
<ActivityIndicator x:Name="indicador" AbsoluteLayout.LayoutBounds="0.5,0.5,100,100" AbsoluteLayout.LayoutFlags="PositionProportional" Color="Blue"/>
<StackLayout>
<ListView x:Name="ListaContactos">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<StackLayout>
<Image Source="{Binding Imagem}"/>
<Label Text="{Binding Nome}"/>
<Label Text="{Binding Email}"/>
<Label Text="{Binding Numero}"/>
</StackLayout>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</StackLayout>
</AbsoluteLayout>
</ContentPage.Content>
</ContentPage>
As Jason said, you can use CollectionView to do it.However,you should note that:
The CollectionView is currently an early preview, and lacks much of its planned functionality. In addition, the API will change as the implementation is completed.
And CollectionView is available in Xamarin.Forms 4.0-pre1.
If no problem with version, using code as follow:(Update: Adding Frame to code)
<StackLayout Margin="20,35,20,20">
<CollectionView ItemsSource="{Binding Monkeys}" >
<CollectionView.ItemsLayout>
<GridItemsLayout Orientation="Vertical"
Span="2" />
</CollectionView.ItemsLayout>
<CollectionView.ItemTemplate>
<DataTemplate>
<StackLayout Padding="10">
<Frame BackgroundColor="LightGray"
OutlineColor="Black"
CornerRadius="10">
<Grid Padding="5" WidthRequest="120" HeightRequest="120">
<Grid.RowDefinitions>
<RowDefinition Height="25" />
<RowDefinition Height="25" />
<RowDefinition Height="25" />
<RowDefinition Height="25" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="120" />
</Grid.ColumnDefinitions>
<Label Grid.Row="0"
Text="{Binding Name}"
FontAttributes="Bold"
LineBreakMode="TailTruncation" />
<Image Grid.Row="1"
Source="{Binding ImageUrl}"
Aspect="AspectFill"
HeightRequest="60"
WidthRequest="60" />
<Label Grid.Row="2"
Text="{Binding Location}"
LineBreakMode="TailTruncation"
FontAttributes="Italic"
VerticalOptions="End" />
<Label Grid.Row="3"
Text="{Binding Details}"
LineBreakMode="TailTruncation"
FontAttributes="Italic"
VerticalOptions="End" />
</Grid>
</Frame>
</StackLayout>
</DataTemplate>
</CollectionView.ItemTemplate>
</CollectionView>
</StackLayout>
Refer to official sample , binding source:
BindingContext = new MonkeysViewModel();
Here is the capture image of app.
I am returning about 20 rows of data in my listview and it is just showing 12.
How can I introduce a scroll in my listview below. I tried putting a scrollview around it but no luck.
<StackLayout Grid.Column="1" Orientation="Vertical" VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand" Padding="0" Spacing="0">
<SearchBar x:Name="searchBar" Placeholder="Search" SearchCommandParameter="{Binding Source={x:Reference searchBar}, Path=Text}"/>
<StackLayout VerticalOptions="FillAndExpand">
<StackLayout VerticalOptions="FillAndExpand" Padding="1" BackgroundColor="Black">
<ListView x:Name="dataList" BackgroundColor="White">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<Label FontSize="20" VerticalOptions="CenterAndExpand" TextColor="Black" Text="{Binding HeadLines}"></Label>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</StackLayout>
</StackLayout>
</StackLayout>
Answer
Your XAML structure is wrong. Please have a look my code, and try it. Hope, It will help you.
Code
<Grid VerticalOptions="FillAndExpand">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<SearchBar Grid.Column="0" x:Name="searchBar" Placeholder="Search" SearchCommandParameter="{Binding Source={x:Reference searchBar}, Path=Text}" />
<ListView Grid.Column="2" x:Name="dataList" BackgroundColor="White">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<Label FontSize="20" VerticalOptions="CenterAndExpand" TextColor="Black" Text="{Binding HeadLines}">
</Label>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</Grid>
I have a ListView in Xamarin Forms XAML, in this ListView I want to draw a Grid with 4 labels and 1 Entry. My problem is that, when I try to display the ListView, its rows are superimposed and not all the content of the ViewCell, into the DataTemplate, is displayed.
I don't know what is my error.
Here my 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" x:Class="iGuideTest.ExhibitionsPage"
Title = "{Binding titleMenu}">
<ContentPage.Content>
<StackLayout VerticalOptions="Center" HorizontalOptions="Center">
<Label Text="You are in the Exhibitions page" />
<Button Text="Return to LoginPage" Command="{Binding BackCommand}" />
<Label Text="{Binding exhibitionsList.Count}" />
<Button Grid.Row="2" Grid.Column="0" Text="{Binding surname}" Command="{Binding Edit}" />
<ListView x:Name="ListViewCouchbase" ItemsSource="{Binding exhibitionsList}"
>
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<Label Grid.Row="0" Grid.Column="0" TextColor="#05199C" Text="{Binding title}" />
<Label Grid.Row="0" Grid.Column="1" TextColor="#008000" Text="{Binding userId}" />
<Label Grid.Row="1" Grid.Column="1" TextColor="Maroon" Text="{Binding LastUpdated}" />
<Label Grid.Row="1" Grid.Column="0" TextColor="Purple" Text="{Binding surname}" />
<Entry Grid.Row="2" Grid.Column="0" TextColor="Blue" Text="{Binding Id}" />
</Grid>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</StackLayout>
</ContentPage.Content>
Thanks in advance.
Try to use HasUnevenRows property:
<ListView HasUnevenRows="True">
...
</ListView>
Since you are using a Grid and you have Auto in RowHeight you will be better of setting HasUnevenRows property to true.
Also your grid is of dynamic size on its own, you can set its VerticalOptions to Fill.
Yes, i've been there :)
just set ListView RowHeight="xx" where xx is some double indicating the height.