How to use Grid and create this? - xaml

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.

Related

Xamarin Listview cannot scroll to bottm

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".

Xamarin - lower half of view cut off

Some times when loading a View, it does not fully load on Iphone.. see the screenshot.. (Images are blurred on purpose..) At least, it does not load with proper dimensions. it is usually fixed by rotating the phone to landscape and back.. is there a way to avoid this?
here is my view:
<?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:vm="clr-namespace:GalShare.ViewModel"
xmlns:d="http://xamarin.com/schemas/2014/forms/design"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:ffimageloading="clr-namespace:FFImageLoading.Forms;assembly=FFImageLoading.Forms"
xmlns:forms="clr-namespace:RedCorners.Forms;assembly=RedCorners.Forms"
mc:Ignorable="d"
x:Class="GalShare.Views.Gallery">
<NavigationPage.TitleView>
<Grid Padding="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"/>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="180"/>
<ColumnDefinition Width="10"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="45"/>
</Grid.RowDefinitions>
<Button Grid.Row="0" Grid.Column="0" Text="Back" x:Name="Backbutton" Clicked="Backbutton_Clicked"></Button>
<Button Grid.Row="0" Grid.Column="2" Text="Ph. contact info" x:Name="PhInfo" Clicked="PhInfo_Clicked"></Button>
</Grid>
</NavigationPage.TitleView>
<ContentPage.Content>
<AbsoluteLayout HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand">
<StackLayout
AbsoluteLayout.LayoutFlags="All"
AbsoluteLayout.LayoutBounds="0,0,1,1">
<ContentView x:Name="Messagecontainer" Padding="5">
<forms:Frame2 CornerRadius="8"
HasShadow="True"
ShadowRadius="8"
ShadowColor="Black"
Padding="5"
BackgroundColor="LightGray">
<Label x:Name="Messagefield"></Label>
</forms:Frame2>
</ContentView>
<CollectionView ItemsSource="{Binding Galleries}" Margin="0" x:Name="MyCollection" SelectionMode="Single" SelectionChanged="CollectionView_SelectionChanged">
<CollectionView.ItemsLayout>
<GridItemsLayout Orientation="Vertical"
Span="2" />
</CollectionView.ItemsLayout>
<CollectionView.ItemTemplate>
<DataTemplate>
<ContentView Padding="8">
<forms:Frame2 CornerRadius="15"
HasShadow="True"
ShadowRadius="5"
HeightRequest="190"
BackgroundColor="LightGray"
Padding="1">
<StackLayout HorizontalOptions="Start" VerticalOptions="Start" Padding="2">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="140"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<ffimageloading:CachedImage Grid.Row="0" Grid.Column="0" x:Name="myImage" Source="{Binding ThumbUrl}" Aspect="AspectFit" CacheDuration="1" HorizontalOptions="CenterAndExpand" VerticalOptions="CenterAndExpand" DownsampleToViewSize="False"></ffimageloading:CachedImage>
<StackLayout Padding="0" Margin="0" Spacing="0" Grid.Column="0" Grid.Row="1">
<StackLayout Spacing="0" Margin="0" Padding="5,0,5,0">
<ImageButton HorizontalOptions="Center" Padding="0" WidthRequest="28" Aspect="AspectFit" HeightRequest="28" Margin="0" Source="{Binding likeImg}" x:Name="Favoriteimage" Clicked="LikeButton_Clicked" ></ImageButton>
<!-- <Button CharacterSpacing="0" HorizontalOptions="Center" Padding="0" WidthRequest="50" HeightRequest="28" Margin="0" Text="Like" x:Name="Favoriteimage" Clicked="Button_Clicked" ></Button>-->
</StackLayout>
<Label x:Name="Picname" Text="{Binding ImageName}" IsVisible="{Binding showname}" FontSize="Micro" VerticalOptions="End" VerticalTextAlignment="Center" HorizontalTextAlignment="Center" ></Label>
</StackLayout>
</Grid>
</StackLayout>
</forms:Frame2>
</ContentView>
</DataTemplate>
</CollectionView.ItemTemplate>
</CollectionView>
</StackLayout>
<StackLayout IsVisible="{Binding isBusy}" x:Name="LoadingLayout" Padding="12"
AbsoluteLayout.LayoutFlags="PositionProportional"
AbsoluteLayout.LayoutBounds="0.5,0.5,-1,-1">
<ActivityIndicator IsVisible="{Binding IsBusy}"
IsRunning="{Binding IsBusy}" />
<Label Text="Loading gallery..." IsVisible="{Binding IsBusy}" HorizontalOptions="Center" TextColor="Black"/>
</StackLayout>
</AbsoluteLayout>
</ContentPage.Content>
</ContentPage>
Because you used AbsoluteLayout as root layout of the ContentPage . If you want to put the ActivityIndicator on the CollectionView , you could use Grid and put them in the same cell .
<Grid VerticalOptions="CenterAndExpand" HorizontalOptions="CenterAndExpand">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<StackLayout Grid.Row="0" Grid.Column="0" BackgroundColor="Red" x:Name="LoadingLayout" Padding="12">
//...
</StackLayout>
<StackLayout Grid.Row="0" Grid.Column="0" IsVisible="{Binding isBusy}" x:Name="LoadingLayout" Padding="12" VerticalOptions="CenterAndExpand" HorizontalOptions="CenterAndExpand">
<ActivityIndicator IsVisible="{Binding IsBusy}"
IsRunning="{Binding IsBusy}" />
<Label Text="Loading gallery..." IsVisible="{Binding IsBusy}" HorizontalOptions="Center" TextColor="Black"/>
</StackLayout>
</Grid>
If the problem still exists, you could share your sample so that I can test it on my side .

Compilation error "Can not set the content of ListView as it doesn't have a ContentPropertyAttributte" in Xamarin.Forms

I basically want the ListView cells to have auto height, and that's what I came up with:
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:local="clr-namespace:MovieDbApp.UI"
x:Class="MovieDbApp.View.MoviesPage">
<ContentPage.Content>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<ListView x:Name="listView" Grid.Row="0">
<DataTemplate>
<ViewCell>
<StackLayout>
<Label Text="{Binding Title}" />
<Image Source="{Binding PosterPath}" />
<Label Text="{Binding ReleaseDate}" />
<Label Text="{Binding DisplayGenre}" />
</StackLayout>
</ViewCell>
</DataTemplate>
</ListView>
</Grid>
</ContentPage.Content>
</ContentPage>
This should be simple enough, but now I'm getting that compilation error ans I have no idea what it means as there's no ContentPropertyAttributte in ListView, or at least none that I can find.
you are missing <ListView.ItemTemplate>
<ListView x:Name="listView" Grid.Row="0">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<StackLayout>
<Label Text="{Binding Title}" />
<Image Source="{Binding PosterPath}" />
<Label Text="{Binding ReleaseDate}" />
<Label Text="{Binding DisplayGenre}" />
</StackLayout>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>

How to bind nested listview within listitem of parent list, after applying grouping?

How to bind nested listview within listitem of parent list.
I followed below posts, and now need help to bind ItemSource of a nested listview present within listitem data template.
https://montemagno.com/enhancing-xamarin-forms-listview-with-grouping/
how to bind list inside litview in xamarin.forms
Some thing like below-
Group Header 1
Item 1
Listitem 1
Listitem 2
Item 2
Listitem 1
Listitem 2
Group Header 2
Item 1
Listitem 1
Item 2
Listitem 1
Listitem 2
Listitem 3
My Code-
<ContentPage.Content>
<StackLayout Spacing="0">
<StackLayout HeightRequest="5" HorizontalOptions="CenterAndExpand" BackgroundColor="{StaticResource Key=primary-back-title-color}">
<Label HeightRequest="5" WidthRequest="800" HorizontalOptions="FillAndExpand" BackgroundColor="{StaticResource Key=primary-back-title-color}" />
</StackLayout>
<StackLayout HeightRequest="40" BackgroundColor="{StaticResource Key=page-name-background-color}" Orientation="Vertical">
<Label VerticalOptions="CenterAndExpand" Margin="10,0,0,0" FontAttributes="Bold" TextColor="White" Text="My Cart" />
</StackLayout>
<ListView ItemsSource="{Binding VendorProduct}" HasUnevenRows="true" SeparatorVisibility="None" SelectedItem="none" IsGroupingEnabled="true" x:Name="CartProductListView" ItemSelected="Handle_ItemSelected">
<ListView.GroupHeaderTemplate>
<DataTemplate>
<ViewCell Height="20">
<Grid BackgroundColor="White" HeightRequest="25" Margin="0,0,0,5">
<Label Margin="10,1,0,1" FontSize="14" VerticalOptions="CenterAndExpand" FontAttributes="Bold" TextColor="{StaticResource Key=page-name-background-color}" Text="{Binding VendorName}">
</Label>
</Grid>
</ViewCell>
</DataTemplate>
</ListView.GroupHeaderTemplate>
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<StackLayout>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="15" />
<RowDefinition Height="15" />
</Grid.RowDefinitions>
<StackLayout Margin="5,0,0,0" Grid.Row="0" Orientation="Horizontal">
<Label FontSize="14" Text="DC-Customer Name: ">
</Label>
<Label FontSize="14" TextColor="#AD2C2C" Text="ABC-123456">
</Label>
</StackLayout>
<StackLayout Margin="5,0,0,0" Grid.Row="1" Orientation="Horizontal">
<Label FontSize="14" Text="Zone Price: ">
</Label>
<Label FontSize="14" TextColor="#AD2C2C" Text="$4.21">
</Label>
</StackLayout>
</Grid>
<Grid Margin="10,10,0,0" ColumnSpacing="0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<RelativeLayout HeightRequest="94" Grid.Column="0" WidthRequest="{Binding DealsHeight}">
<ListView ItemsSource="{Binding Deals}" Rotation="270" RelativeLayout.XConstraint="{ConstraintExpression Type=RelativeToParent,Property=Width,Factor=0.5,Constant=-47}" RelativeLayout.YConstraint="{ConstraintExpression Type=RelativeToParent,Property=Width,Factor=-0.5,Constant=47}" RelativeLayout.WidthConstraint="{ConstraintExpression Type=Constant,Constant=94}" RelativeLayout.HeightConstraint="{ConstraintExpression Type=RelativeToParent,Property=Width,Factor=1}" RowHeight="94" SeparatorVisibility="None" HasUnevenRows="true" BackgroundColor="White">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<ViewCell.View>
<Grid BackgroundColor="#BCD153" RowSpacing="1" Padding="1" Rotation="90" HeightRequest="94">
<Grid.RowDefinitions>
<RowDefinition Height="30" />
<RowDefinition Height="30" />
<RowDefinition Height="30" />
</Grid.RowDefinitions>
<StackLayout BackgroundColor="White" Grid.Row="0" Padding="5">
<Label Text="{Binding BookCode}" FontSize="13" />
</StackLayout>
<StackLayout BackgroundColor="White" Grid.Row="1" Padding="5">
<Label Text="{Binding Amount, StringFormat='${0} OFF'}" FontSize="13" />
</StackLayout>
<StackLayout BackgroundColor="White" Grid.Row="2">
<Entry Keyboard="Numeric" IsEnabled="{Binding IsQuantityEditable}" Text="{Binding Quantity}">
<Entry.Behaviors>
<converters:NumericMaxLengthBehavior x:Name="PhoneNumberValidator" />
</Entry.Behaviors>
</Entry>
</StackLayout>
</Grid>
</ViewCell.View>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</RelativeLayout>
<StackLayout Grid.Column="1">
<Label Text="Month" VerticalOptions="CenterAndExpand" TextColor="Silver" FontSize="12" HeightRequest="30" />
<Label Text="Discount" VerticalOptions="CenterAndExpand" TextColor="Silver" FontSize="12" HeightRequest="30" />
<Label Text="Quantity" VerticalOptions="CenterAndExpand" TextColor="Silver" FontSize="12" HeightRequest="30" />
</StackLayout>
</Grid>
</StackLayout>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
<Button Margin="0,20,0,0" Text="Propose Order" Command="{Binding ShowOrdersCommand}" BackgroundColor="{StaticResource Key=primary-back-title-color}" TextColor="White" VerticalOptions="Center" HorizontalOptions="Center" WidthRequest="200">
</Button>
</StackLayout>
</ContentPage.Content>

Using a scroll in a xamarin.forms listview

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>