Ecosyste.ms: Awesome
An open API service indexing awesome lists of open source software.
https://github.com/syncfusionexamples/how-to-display-context-menu-when-tapping-in-xamarin.forms-listview
This repository contains sample about how to display context menu when tapping in Xamarin.Forms ListView?
https://github.com/syncfusionexamples/how-to-display-context-menu-when-tapping-in-xamarin.forms-listview
content-menu listview xamarin xamarin-forms
Last synced: 27 days ago
JSON representation
This repository contains sample about how to display context menu when tapping in Xamarin.Forms ListView?
- Host: GitHub
- URL: https://github.com/syncfusionexamples/how-to-display-context-menu-when-tapping-in-xamarin.forms-listview
- Owner: SyncfusionExamples
- Created: 2019-01-31T06:49:05.000Z (almost 6 years ago)
- Default Branch: master
- Last Pushed: 2024-05-10T09:27:36.000Z (8 months ago)
- Last Synced: 2024-05-10T10:36:05.861Z (8 months ago)
- Topics: content-menu, listview, xamarin, xamarin-forms
- Language: C#
- Homepage:
- Size: 1.85 MB
- Stars: 0
- Watchers: 4
- Forks: 2
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# How-to-display-context-menu-when-tapping-in-Xamarin.Forms-ListView?
This example demonstrates how to display a pop-up menu with different menu items to an item when it is long pressed by customizing the SfListView and by using custom view in it. For UWP platform, you can also display the pop-up menu when pressing right click button over the item. Display the pop-up menu by accessed the touch position in the item based on [Position](https://help.syncfusion.com/cr/cref_files/xamarin/Syncfusion.SfListView.XForms~Syncfusion.ListView.XForms.ItemHoldingEventArgs~Position.html) property from [ItemHolding](https://help.syncfusion.com/cr/cref_files/xamarin/Syncfusion.SfListView.XForms~Syncfusion.ListView.XForms.SfListView~ItemHolding_EV.html) event.
Defining SfPopUpView
```
namespace SfListViewSample
{
public class Behavior : Behavior
{
SfListView ListView;
int sortorder = 0;
Contacts item;
SfPopupLayout popupLayout;
protected override void OnAttachedTo(SfListView listView)
{
ListView = listView;
ListView.ItemHolding += ListView_ItemHolding;
ListView.ScrollStateChanged += ListView_ScrollStateChanged;
ListView.ItemTapped += ListView_ItemTapped;
base.OnAttachedTo(listView);
}
private void ListView_ItemTapped(object sender, Syncfusion.ListView.XForms.ItemTappedEventArgs e)
{
popupLayout.Dismiss();
}
private void ListView_ScrollStateChanged(object sender, ScrollStateChangedEventArgs e)
{
popupLayout.Dismiss();
}
private void ListView_ItemHolding(object sender, ItemHoldingEventArgs e)
{
item = e.ItemData as Contacts;
popupLayout = new SfPopupLayout();
popupLayout.PopupView.HeightRequest = 100;
popupLayout.PopupView.WidthRequest = 100;
popupLayout.PopupView.ContentTemplate = new DataTemplate(() =>
{
var mainStack = new StackLayout();
mainStack.BackgroundColor = Color.Teal;
var deletedButton = new Button()
{
Text = "Delete",
HeightRequest=50,
BackgroundColor=Color.Teal,
TextColor = Color.White
};
deletedButton.Clicked += DeletedButton_Clicked;
var sortButton = new Button()
{
Text = "Sort",
HeightRequest = 50,
BackgroundColor = Color.Teal,
TextColor=Color.White
};
sortButton.Clicked += SortButton_Clicked;
mainStack.Children.Add(deletedButton);
mainStack.Children.Add(sortButton);
return mainStack;
});
popupLayout.PopupView.ShowHeader = false;
popupLayout.PopupView.ShowFooter = false;
if (e.Position.Y + 100 <= ListView.Height && e.Position.X + 100 > ListView.Width)
popupLayout.Show((double)(e.Position.X - 100), (double)(e.Position.Y));
else if (e.Position.Y + 100 > ListView.Height && e.Position.X + 100 < ListView.Width)
popupLayout.Show((double)e.Position.X, (double)(e.Position.Y - 100));
else if (e.Position.Y + 100 > ListView.Height && e.Position.X + 100 > ListView.Width)
popupLayout.Show((double)(e.Position.X - 100), (double)(e.Position.Y - 100));
else
popupLayout.Show((double)e.Position.X, (double)(e.Position.Y));
}
private void SortButton_Clicked(object sender, EventArgs e)
{
if (ListView == null)
return;
ListView.DataSource.SortDescriptors.Clear();
popupLayout.Dismiss();
ListView.DataSource.LiveDataUpdateMode = LiveDataUpdateMode.AllowDataShaping;
if (sortorder == 0)
{
ListView.DataSource.SortDescriptors.Add(new SortDescriptor { PropertyName = "ContactName", Direction = ListSortDirection.Descending });
sortorder = 1;
}
else
{
ListView.DataSource.SortDescriptors.Add(new SortDescriptor { PropertyName = "ContactName", Direction = ListSortDirection.Ascending });
sortorder = 0;
}
}
private void Dismiss()
{
popupLayout.IsVisible = false;
}
private void DeletedButton_Clicked(object sender, EventArgs e)
{
if (ListView == null)
return;
var source = ListView.ItemsSource as IList;
if (source != null && source.Contains(item))
source.Remove(item);
else
App.Current.MainPage.DisplayAlert("Alert", "Unable to delete the item", "OK");
item = null;
source = null;
}
}
}
```
Defining the SfListView
```
```
## Requirements to run the demo
* [Visual Studio 2017](https://visualstudio.microsoft.com/downloads/) or [Visual Studio for Mac](https://visualstudio.microsoft.com/vs/mac/)
* Xamarin add-ons for Visual Studio (available via the Visual Studio installer).
## Troubleshooting
### Path too long exception
If you are facing path too long exception when building this example project, close Visual Studio and rename the repository to short and build the project.