Download the sample. The Xamarin. Forms ListView class supports user interaction with the data it presents. The ListView selection mode is controlled by setting the ListView. Tapping the same item twice will fire two ItemTapped events, but will only fire a single ItemSelected event.
When the SelectionMode property is set to Singleitems in the ListView can be selected, the ItemSelected and ItemTapped events will be fired, and the SelectedItem property will be set to the value of the selected item. When the SelectionMode property is set to Noneitems in the ListView cannot be selected, the ItemSelected event will not be fired, and the SelectedItem property will remain null.
However, ItemTapped events will still be fired and the tapped item will be briefly highlighted during the tap. When an item has been selected and the SelectionMode property is changed from Single to Nonethe SelectedItem property will be set to null and the ItemSelected event will be fired with a null item. The following screenshots show a ListView with the default selection mode:.
Often, users will want to take action on an item in a ListView. For example, consider a list of emails in the Mail app. On iOS, you can swipe to delete a message:. Below you'll find specific guides for both, but first let's take a look at some key implementation details for both. Context Actions are created using MenuItem elements. This is different from how tap events are handled for cells, where the ListView raises the event rather than the cell.
Because the ListView is raising the event, its event handler is given key information, like which item was selected or tapped. By default, a MenuItem has no way of knowing which cell it belongs to.
Xamarin - Menus
The XAML below demonstrates a custom cell with two context actions implemented:. Context actions can be implemented in any Cell subclass as long as it isn't being used as a group header by creating MenuItem instances and adding them to the ContextActions collection for the cell. You have the following properties can be configured for the context action:. Multiple context actions can be added to a cell, however only one should have IsDestructive set to true. The following code demonstrates how context actions would be added to a ViewCell :.
Users have come to expect that pulling down on a list of data will refresh that list. The ListView control supports this out-of-the-box. A spinner appears during the refresh, which is black by default. The following screenshots show pull-to-refresh after the user has released the pull, with the spinner being shown while the ListView is updating:.
ListView fires the Refreshing event to initiate the refresh, and the IsRefreshing property will be set to true. Whatever code is required to refresh the contents of the ListView should then be executed by the event handler for the Refreshing event, or by the method executed by the RefreshCommand. Once the ListView is refreshed, the IsRefreshing property should be set to falseor the EndRefresh method should be called, to indicate that the refresh is complete.
When defining a RefreshCommandthe CanExecute method of the command can be specified to enable or disable the command. ListView defines a Scrolled event that's fired to indicate that scrolling occurred.
In this code example, the OnListViewScrolled event handler is executed when the Scrolled event fires:.This article gives you an overview of menu in Xamarin Android. In this article, we are going to learn about how to create a menu in Xamarin Android app. Solution Here are the steps to add tabs in an Android app.
Step 1 First, open the solution, add go to Resource, create menu folder and add new item as XML file. For the details, refer to the screenshot given below. Step 2 Now, go to Values folder and add the lines of code given below in Strings. XML file to add the names of the tabs. Step 3 Open the mainMenu. XML file and the code given below to add the menu on the Main Activity, as shown below. Step 4 Go to Main Activity and set the menu by adding the code given below.
Step 5 Now, the menu is added on the Main Activity, so we need to add the menu item selected event on the click of menu item.
For this, add the code given below. By adding the action in the selected menu item, you can perform any action on the selection of the menu item. View All. Virendra Thakur Updated date, Mar 17 Introduction In this article, we are going to learn about how to create a menu in Xamarin Android app. File Name: Strings. Next Recommended Article. Android Menu In Xamarin Xamarin.
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Getting Started With.I have been using the last few previews of Forms 4 and had a nice Flyout section with selectable items created from a database followed by MenuItems for things such as settings, About etc. The release version has broken this with the removal of MenuItems. WHY was this done? MenuItems provides flexibility when I do not want to have tab items, where I want a modal page or where I want a conditional page I choose in a bound command.
Do the MenuItem entries show up while those lines are commented out? Looking at the documentation on GitHub, there isn't a MenuItems tag to specify. You just list them as children of the layout.
Copy and Pasted code from the GitHub md. Shell Flyout md. This is just an intellisense error that's being worked on. It builds and runs without any issues. Deploy your code and it'll not be terminated. This is NOT just intellisense. When I uncomment them and recompile I get an error:.
GenList MainShell. Add this to the XAML for - make it the last entry before Uncomment it and it does not compile with the release version of Forms 4 using VS enterprise preview.Options Menu with Sub Items - Android Studio Tutorial
The same happens in VS Pro. By the way the 4. Can't post link to the documentation. That works. First time I tried it I got an error but it did not compile. This time I compiled and the errors went away. I did not see any notification of this change. Why was such a significant change not made in a prerelease which would have provided much better documentation? Not sure. I don't personally use Shelljust relayed on what I read in the documentation I found.Download the sample.
The Xamarin. Forms MenuItem class defines menu items for menus such as ListView item context menus and Shell application flyout menus. These properties are backed by BindableProperty objects so the MenuItem instance can be the target of data bindings. MenuItem objects can be used within a context menu on a ListView object's items. When the ListView object is populated it will create each item using the DataTemplateexposing the MenuItem choices when the context menu is activated for an item.
The following example shows MenuItem instantiation within the context of a ListView object:. The MenuItem class exposes a Clicked event. Previous examples referenced an OnItemClicked event handler. The following code shows an example implementation:.
In the previous example, two MenuItem objects are defined with their Command and CommandParameter properties bound to commands on the viewmodel. The viewmodel contains the commands referenced in the XAML:. The sample application includes a DataService class used to get a list of items for populating the ListView objects. A viewmodel is instantiated, with items from the DataService class, and set as the BindingContext in the code-behind:.
MenuItem objects only display icons on Android. On other platforms, only the text specified by the Text property will be displayed. Icons are specified using the IconImageSource property.
If an icon is specified, the text specified by the Text property will not be displayed. The following screenshot shows a MenuItem with an icon on Android:.
For more information on using images in Xamarin. Forms, see Images in Xamarin. To enable of disable a MenuItem at runtime, bind its Command property to an ICommand implementation, and ensure that a canExecute delegate enables and disables the ICommand as appropriate. Do not bind the IsEnabled property to another property when using the Command property to enable or disable the MenuItem.
The ICommand implementation requires a canExecute delegate that returns the value of a bool property to enable and disable the MenuItem :. When this occurs, the Command. ChangeCanExecute method is called which causes the canExecute delegate for MyCommand to be re-evaluated.
On Android, the context menu is activated by long-press on a list item. The context menu replaces the title and navigation bar area and MenuItem options are displayed as horizontal buttons. On iOS, the context menu is activated by swiping on a list item.
The context menu is displayed on the list item and MenuItems are displayed as horizontal buttons. On UWP, the context menu is activated by right-clicking on a list item.
The context menu is displayed near the cursor as a vertical list. You may also leave feedback directly on GitHub. Skip to main content. Exit focus mode. The following screenshots show MenuItem objects in a ListView context menu on iOS and Android: The MenuItem class defines the following properties: Command is an ICommand that allows binding user actions, such as finger taps or clicks, to commands defined on a viewmodel.
CommandParameter is an object that specifies the parameter that should be passed to the Command. IconImageSource is an ImageSource value that defines the display icon. IsDestructive is a bool value that indicates whether the MenuItem removes its associated UI element from the list. IsEnabled is a bool value that indicates whether this object responds to user input.A popup menu refers to a menu that is attached to a view; it is also referred to as a shortcut menu.
Create a new project and call it popUpMenu App. Open Main. Create a new folder under the Resources folder and call it Menu. Inside the Menu folder, add a new xml file called popMenu. After adding the menu items, go to mainActivity. Options Menu is a collection of menus that are primary to an App and are mainly used to store settings, search, etc.
Here, we are going to create a menu for settings with three items inside, i. To create an options menu, we must create a new XML layout file in the resources folder. First of all, we will add a new XML file.
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. In Xamarin Forms v4.
Here is the code that works in v4. In all subsequent versions, this code does not work. Intellisense indicates that MenuItems is still part of the Shell, but I get a compilation error saying: error CS The name 'MenuItems' does not exist in the current context. When I reference as this. MenuItems I get the compilation error: error CS 'Shell' does not contain a definition for 'MenuItems' and no accessible extension method 'MenuItems' accepting a first argument of type 'Shell' could be found are you missing a using directive or an assembly reference?
Is this possible in the current version of Xamarin. I've tried with each of the releases and pre-releases since v4 pre10 and none have worked. You need to add the MenuItem objects to the Current. Items property in your AppShell implementation.
Learn more. In Xamarin. Asked 10 months ago. Active 8 months ago. Viewed times. Thanks is advance for any help!
Did you try with MenuShellItem? FabriBertani - Haven't tried that - not sure how I would use it Active Oldest Votes. CurrentState; await Shell. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name.Xamarin is the best cross platform tool to develop mobile applications. We can just use C and leverage the same for all the platforms.
Xamarin also helps us by providing designers with different platforms like Android, IOS, etc. Xamarin also helps us by providing the designers with the different platforms like Android,IOS,etc. Working with Xamarin application development, we have two gateways- Xamarin Studio and Visual Studio. Xamarin Studio supports for both Windows or Mac.
Visual Studio supports only in Windows, provided you can build and debug on Mac. Then create a XML file with a name toolbar. This file contains the options which we are going to give in the toolbar option menu. In this step we are going add this toolbar. Step 5. In this step we will add this toolbar activity in MainActivity. Now we added Toolbar successfully in HomePage.
In the next step I am going to give the actions to the options which we were given in the toolbar. In this step we are going to give the action for the options when we choose it or touch it, like below.
In this method we can get the I. D of the selected item in menu and perform some action. Step 7. Now run the app. View All. Android Using Visual Studio. Saravanan Ponnusamy Updated date, Aug 14 Xamarin Introduction Xamarin is the best cross platform tool to develop mobile applications. Prerequisites Visual Studio RC. The following steps need to be followed in order to create ToolBar in Xamarin. Forms in VS Portable Enter the Application Name, Click ok.
Now you can see the home page of the project. This file contains the options which we are going to give in the toolbar option menu Here I going to give three options in option menu, Search,Share andEmail. Like below. Next Recommended Article. Getting Started With. NET 5.