I have a picker with more than one hundred data. I want to search a particular item. How can I add a entry inside a picker popup? Is it possible? If not, What are the best alternative to search data inside a picker?
What you want might be able to be done via custom renderer, but I personally don't know how that would be done...
If you want custom functionality in a picker, I highly recommend Rg.Plugins.Popup. This package allows a user to define there own custom popup. I use this for all my Popup pages/controls in the application I develop.
GitHub: Rg.Plugins.Popup
Define a PopupPage with an Entry and ListView and you can provide the kind of functionality you are wanting.
There is no out of the box solution for this. But a picker with searchbar can be implemented with rg.plugins.popup.(https://github.com/rotorgames/Rg.Plugins.Popup).
Create a view with label and down arrow.Provide click for that.In that click event call rg.popup.
The design of popup for referance.
<?xml version="1.0" encoding="utf-8" ?>
<pages:PopupPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="iVerify.Sample"
xmlns:pages="clr-namespace:Rg.Plugins.Popup.Pages;assembly=Rg.Plugins.Popup"
xmlns:animations="clr-namespace:Rg.Plugins.Popup.Animations;assembly=Rg.Plugins.Popup"
BackgroundColor="Transparent" >
<pages:PopupPage.Animation>
<animations:ScaleAnimation
PositionIn="Center"
PositionOut="Center"
ScaleIn="1.2"
ScaleOut="0.8"
DurationIn="400"
DurationOut="300"
EasingIn="SinOut"
EasingOut="SinIn"
HasBackgroundAnimation="False"/>
</pages:PopupPage.Animation>
<StackLayout VerticalOptions="Center" Padding="10" HorizontalOptions="FillAndExpand" Margin="0,20,0,0" >
<StackLayout>
<SearchBar x:Name="Searchbar" />
</StackLayout>
<StackLayout>
<ListView x:Name="ListView" ItemsSource="{Binding}"
ItemSelected="List_Tapped">
ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<ViewCell.View>
// Your controls
</ViewCell.View>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</StackLayout>
</StackLayout>
</StackLayout>
</pages:PopupPage>
By using Itemselected property you can get the value of tapped view. Then set it to the label of Mainpage(label that clciked to open the popup).This can be achieved by messeging centre.
Sample screenshot
I did it with Telerik though it didn't launch on Android in main project for me and the dropdown behaves strange on UWP - it is dropping up instead of down for some layout constellations.
Telerik is not free though, so if you have it you can use:
<StackLayout Orientation="Horizontal"
VerticalOptions="FillAndExpand"
HorizontalOptions="FillAndExpand">
<telerikInput:RadAutoCompleteView x:Name="autoCompleteView"
HorizontalOptions="FillAndExpand"
ShowSuggestionView="True"
ShowMoreItems="True"
SuggestMode="Suggest"
Watermark="Search here..." />
<Button Clicked="Button_Clicked"
Text="▼"/>
</StackLayout>
and in code behind
private void Button_Clicked(object sender, System.EventArgs e)
{
autoCompleteView.ShowSuggestions();
}
Related
first time asking a question on here, sorry if I mess up the etiquette.
I am using AppShell in my Xamarin.Forms project and am using a flyout in combination with a tab bar.
What I want is for the AppShell flyout to always slide out below the navigation/title bar. Currently it covers the whole screen.
I know that I could use a custom view but I like the features and integration of AppShell. For now, I want to try to do this with AppShell.
I've tried a few things like setting the HeightRequest of the flyout and creating an empty header. The Idea will be to keep the buttons in the nav bar always clickable when the side menu is out.
Although, I'm starting to think that maybe this isn't possible with AppShell. Thanks!
How it's working now
What I want (never-mind the difference in flyout width)
You could try using SwipeView for this instead.
https://learn.microsoft.com/en-us/xamarin/xamarin-forms/user-interface/swipeview
You could use the FlyoutPage instead. On Android, the navigation bar is present at the top of the page and displays a title, an icon, and a button that navigates to the detail page.
Create a FlyoutPage to load the MenuPage.
<FlyoutPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml" xmlns:local="clr-namespace:App10"
x:Class="App10.Page14" Title="Navigation Bar" FlyoutLayoutBehavior="Split">
<FlyoutPage.Flyout >
<local:FlyoutMenuPage x:Name="flyoutPage" />
</FlyoutPage.Flyout>
<FlyoutPage.Detail>
<NavigationPage>
<x:Arguments>
<local:ContactsPage />
</x:Arguments>
</NavigationPage>
</FlyoutPage.Detail>
Create a listview to simulate a Flyout of AppShell in FlyoutMenuPage.
<ListView x:Name="listView" x:FieldModifier="public">
<ListView.ItemsSource>
<x:Array Type="{x:Type local:FlyoutPageItem}">
<local:FlyoutPageItem Title="Contacts" IconSource="check.png" TargetType="{x:Type local:ContactsPage}" />
<local:FlyoutPageItem Title="Reminders" IconSource="circle.png" TargetType="{x:Type local:ReminderPage}" />
</x:Array>
</ListView.ItemsSource>
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<Grid Padding="5,10">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="30"/>
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<Image Source="{Binding IconSource}" />
<Label Grid.Column="1" Text="{Binding Title}" />
</Grid>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
Please note, do not forget to set the NavigationPage in App.xaml.cs.
MainPage = new NavigationPage(new Page14());
For more details about it, you could refer to the code in GitHub. https://github.com/xamarin/xamarin-forms-samples/tree/main/Navigation/FlyoutPage
I am trying to bind a command (with RelativeSourceExtension) to a button within a StackLayout using BindableLayout.ItemsSource in an Xamarin.Forms App.
Not working version of MyControl.xaml:
<?xml version="1.0" encoding="UTF-8"?>
<Grid xmlns="http://xamarin.com/schemas/2014/forms"
...
x:Class="MyApp.Views.MyControl">
<StackLayout Orientation="Horizontal"
BindableLayout.ItemsSource="{Binding Data}">
<Button Command="{Binding Source={RelativeSource AncestorType={x:Type views:MyControl}}, Path=BindingContext.RemoveCommand}"
CommandParameter="{Binding}"
Text="Remove"/>
</StackLayout>
</Grid>
Unfortunately the button is "inactive" and does not let you "click".
The same command binding works fine in a ListView with ItemsSource.
Working version of MyControl.xaml:
<?xml version="1.0" encoding="UTF-8"?>
<Grid xmlns="http://xamarin.com/schemas/2014/forms"
...
x:Class="MyApp.Views.MyControl">
<ListView ItemsSource="{Binding Data}"
HasUnevenRows="true">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<Button Command="{Binding Source={RelativeSource AncestorType={x:Type views:MyControl}}, Path=BindingContext.RemoveCommand}"
CommandParameter="{Binding}"
Text="Remove"/>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</Grid>
Control Usage in MainPage.xmal:
<Grid BindingContext="{Binding Cart}">
...
<views:MyControl/>
....
</Grid>
Am I generally doing something wrong? Or is there a trick to make this work?
You missed using StackLayout.ItemTemplate and after DataTemplate in you xaml. Your button is not wrapped in a good way. That's it.
I have the following tableview set up in XAML for Xamarin Forms:
<TableView Intent="Menu">
<TableRoot>
<TableSection Title="Categories">
<ViewCell>
<StackLayout Orientation="Horizontal" VerticalOptions="Center" Padding="20,0,20,0">
<Label Text="Category" XAlign="Center"/>
<Label Text=">" HorizontalOptions="EndAndExpand" XAlign="Center"/>
</StackLayout>
</ViewCell>
</TableSection>
</TableRoot>
</TableView>
Can anyone let me know how to implement the clicking of the row to open another content page xamarin forms? Or do I have to separately implement in the iOS side?
Have a look at the Xamarin Documentation about the TapGestureRecognizer.
You can apply that method here as well.
I'm not completely sure if you can apply it directly to the ViewCell but you should be able to do it on the StackLayout.
So it would be something like:
<TableView Intent="Menu">
<TableRoot>
<TableSection Title="Categories">
<ViewCell>
<StackLayout Orientation="Horizontal" VerticalOptions="Center" Padding="20,0,20,0">
<StackLayout.GestureRecognizers>
<TapGestureRecognizer
Tapped="OnTapGestureRecognizerTapped"
NumberOfTapsRequired="1" />
</StackLayout.GestureRecognizers>
<Label Text="Category" XAlign="Center"/>
<Label Text=">" HorizontalOptions="EndAndExpand" XAlign="Center"/>
</StackLayout>
</ViewCell>
</TableSection>
</TableRoot>
</TableView>
And then of course implement the event method.
You could also add the Tapped method to the ViewCell itself.
Like this:
<ViewCell Tapped="Handle_Cell_Tapped">
</View>
Then write your Handle_Cell_Tapped event handler in the code behind.
You can use the ItemTappedEventArgsConverter from Xamarin.Comunity.Toolkit to do this. It's pretty simple and straight forward. Here is a link to the documentation and there are also some samples.
Xamarin Community Toolkit - ItemTappedEventArgsConverter
I need to trigger a command when user clicks on the table cell.
I looked at documentation on tablecell, it doesn't talk about any click event handlers.
This is how my XAML looks -
<ContentPage Title="Default">
<TableView>
<TableView.Root>
<TableSection>
<ViewCell>
<StackLayout Padding="10,0,0,0" Orientation="Horizontal">
<Image Source="..." />
<Button Text="Home" Command="{Binding NavigateCommand}" CommandParameter="Home" />
</StackLayout>
</ViewCell>
</TableSection>
</TableView.Root>
</TableView>
</ContentPage>
Right now, command is triggered only when clicked on button, but I want to trigger command when the cell is clicked.
I am new to xamarin, is custom viewcell rendering the only way to achieve this?
If so, any pointers there?
Thanks!
You can use the Tapped gesture recognizer within a ViewCell.
Xaml:
<TableView>
<TableView.Root>
<TableSection>
<ViewCell Tapped="OnViewCellTapped">
~~~~~
</ViewCell>
</TableSection>
</TableView.Root>
</TableView>
Code behind:
protected void OnViewCellTapped(object sender, EventArgs e)
{
System.Diagnostics.Debug.WriteLine("Tapped");
}
I'm looking to create a specific animation where you start with a collapsed sidebar (still visible, but skinny) and main page content:
and when you pull out the left sidebar, the sidebar expands, and the main content moves with it (so that the right part of the main content slides out of view):
Also, note that the content in the sidebar doesn't move (though there is additional content that appears (button on the bottom)), but rather the width of the sidebar container just expands. Finally, I would like it to slide with my finger, not just be a static animation.
How do I accomplish this in Xamarin.Forms? (Is it possible?)
You can found it in Telerik Xamarin Forms sample (SlideDrawer -> Transitions/Location)
Sign in your account (telerik.com), I thinks it's free ..
Playing with the Xamarin Studio XAML Preview:
It is a matter of binding your expand event to WidthRequest in the first "column" to resize it and push the "right" side over. Depending upon the control settings in the first column, they will either expand to fill the new "column" width or stay a fixed size...
Note: Personally I would do this using ConstraintExpressions in order to make the design truly dynamic and adaptive to orientation changes, different screen sizes, etc...
<StackLayout RelativeLayout.HeightConstraint="{ConstraintExpression Type=RelativeToParent, Property=Height, Factor=0.25}"
RelativeLayout.YConstraint= "{ConstraintExpression Type=RelativeToParent, Property=Height, Factor=0.75}"
</StackLayout>
Example XAML from preview image above:
<?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="OpenDrawer.TestLayoutPreview">
<ContentPage.Content>
<StackLayout BackgroundColor="Blue" Orientation="Horizontal">
<StackLayout Orientation="Vertical">
<StackLayout Orientation="Vertical" BackgroundColor="Maroon" HorizontalOptions="Start" VerticalOptions="FillAndExpand" MinimumWidthRequest="100" WidthRequest="100">
<Button Text="Left 1" BackgroundColor="Aqua"></Button>
<Button Text="Left 2" BackgroundColor="Aqua"></Button>
<Button Text="Left 3" BackgroundColor="Aqua"></Button>
</StackLayout>
<StackLayout Orientation="Vertical" VerticalOptions="End">
<Button Text="Left Bottom" BackgroundColor="Lime"></Button>
</StackLayout>
</StackLayout>
<StackLayout Orientation="Vertical" BackgroundColor="Red" HorizontalOptions="FillAndExpand">
<Label Text="Right" BackgroundColor="Aqua"></Label>
<ScrollView>
<WebView Source="https://xamarin.com" WidthRequest="1000" HeightRequest="1000" ></WebView>
</ScrollView>
</StackLayout>
</StackLayout>
</ContentPage.Content>
</ContentPage>