SfBadgeView Getting Started
25 Nov 20249 minutes to read
This section explains the steps required to configure the Xamarin Badge View (SfBadgeView) control and customize its elements.
Assembly deployment
After installing Essential Studio® for Xamarin, you can find all the required assemblies in the installation folders, {Syncfusion Essential Studio Installed location} \Essential Studio\{Version #}\Xamarin\lib.
E.g.: C:\Program Files (x86) \Syncfusion\Essential Studio\19.1.0.54\Xamarin\lib
NOTE
Assemblies can be found in unzipped package location(Documents/Syncfusion/{Version #}/Xamarin/lib) in Mac.
Adding SfBadgeView reference
You can add SfBadgeView reference using one of the following methods:
Method 1: Adding SfBadgeView reference from nuget.org
Syncfusion Xamarin components are available in nuget.org. To add SfBadgeView to your project, open the NuGet package manager in Visual Studio, search for Syncfusion.Xamarin.SfBadgeView, and then install it.
NOTE
Install the same version of SfBadgeView NuGet in all the projects.
Method 2: Adding SfBadgeView reference from toolbox
Syncfusion also provides Xamarin Toolbox. Using this toolbox, you can drag the Xamarin Badge View (SfBadgeView) control to the XAML page. It will automatically install the required NuGet packages and add the namespace to the page. To install Syncfusion Xamarin Toolbox, refer to Toolbox.
Method 3: Adding SfBadgeView assemblies manually from the installed location
If you prefer to manually reference the assemblies instead referencing from NuGet, add the following assemblies in respective projects.
Location: {Installed location}/{version}/Xamarin/lib
| PCL | Syncfusion.SfBadgeView.XForms.dll Syncfusion.Core.XForms.dll |
| Android | Syncfusion.SfBadgeView.XForms.dll Syncfusion.SfBadgeView.XForms.Android.dll Syncfusion.Core.XForms.dll Syncfusion.Core.XForms.Android.dll |
| iOS | Syncfusion.SfBadgeView.XForms.dll Syncfusion.SfBadgeView.XForms.iOS.dll Syncfusion.Core.XForms.dll Syncfusion.Core.XForms.iOS.dll |
| UWP | Syncfusion.SfBadgeView.XForms.dll Syncfusion.SfBadgeView.XForms.UWP.dll Syncfusion.Core.XForms.dll Syncfusion.Core.XForms.UWP.dll |
| WPF | Syncfusion.SfBadgeView.XForms.dll Syncfusion.SfBadgeView.XForms.WPF.dll Syncfusion.Core.XForms.dll Syncfusion.Core.XForms.WPF.dll |
NOTE
To know more about obtaining our components, refer to these links for Mac and Windows.
IMPORTANT
Starting with v16.2.0.x, if you reference Syncfusion assemblies from the trial setup or from the NuGet feed, you also have to include a license key in your projects. Please refer to Syncfusion license key to know about registering Syncfusion license key in your Xamarin application to use our components.
Launching the application on each platform with badge view
To use the badge view in an application, each platform requires some additional configurations. The configurations vary from platform to platform and is discussed in the following sections:
NOTE
If you are adding the references from toolbox, this step is not needed.
iOS
To launch the badge view in iOS, call the SfBadgeViewRenderer.Init() in the FinishedLaunching overridden method of the AppDelegate class after the Xamarin.Forms framework has been initialized and before the LoadApplication is called as demonstrated in the following code sample.
public override bool FinishedLaunching(UIApplication app, NSDictionary options)
{
…
global::Xamarin.Forms.Forms.Init();
// Add the below line if you are using SfBadgeView.
Syncfusion.XForms.iOS.BadgeView.SfBadgeViewRenderer.Init();
LoadApplication(new App());
…
}Universal Windows Platform (UWP)
You need to initialize the badge view assemblies in App.xaml.cs in UWP project as demonstrated in the following code samples. This is required to deploy the application with badge view in Release mode in UWP platform.
// In App.xaml.cs
protected override void OnLaunched(LaunchActivatedEventArgs e)
{
…
if (rootFrame == null)
{
List<Assembly> assembliesToInclude = new List<Assembly>();
// Add the below line if you are using SfBadgeView.
assembliesToInclude.Add(typeof(Syncfusion.XForms.UWP.BadgeView.SfBadgeViewRenderer).GetTypeInfo().Assembly);
Xamarin.Forms.Forms.Init(e, assembliesToInclude);
}
…
}WPF
To launch the badge view in WPF, call the SfBadgeViewRenderer.Init() in the constructor of the MainWindow class after the Xamarin.Forms framework has been initialized and before the LoadApplication is called as demonstrated in the following code sample.
public MainWindow()
{
InitializeComponent();
Forms.Init();
// Add the below line if you are using SfBadgeView.
SfBadgeViewRenderer.Init();
LoadApplication(new GettingStartedSample.App());
}Android
The Android platform does not require any additional configuration to render the badge view.
Adding namespace
Add the following namespace.
xmlns:badge ="clr-namespace:Syncfusion.XForms.BadgeView;assembly=Syncfusion.SfBadgeView.XForms"using Syncfusion.XForms.BadgeView;Initializing badge view
Create an instance for the badge view control, and add it as content.
<badge:SfBadgeView>
</badge:SfBadgeView>//Initializing the badge view.
SfBadgeView sfBadgeView = new SfBadgeView();
Content = sfBadgeView;Adding badge text
You can add text to badge view using the BadgeText property.
<badge:SfBadgeView>
<badge:SfBadgeView BadgeText="20" />
</badge:SfBadgeView>SfBadgeView sfBadgeView = new SfBadgeView();
//Adding text to the badge view.
sfBadgeView.BadgeText = "20";
Content = sfBadgeView;
Adding content
You can add an image, button, or label to the badge view using the Content property.
<badge:SfBadgeView HorizontalOptions="Center" VerticalOptions="Center" >
<badge:SfBadgeView.Content>
<Button Text="Primary" WidthRequest="120" HeightRequest="60"/>
</badge:SfBadgeView.Content>
</badge:SfBadgeView>SfBadgeView sfBadgeView = new SfBadgeView();
sfBadgeView.HorizontalOptions = LayoutOptions.Center;
sfBadgeView.VerticalOptions = LayoutOptions.Center;
//Adding image to the content of the badge view.
Button button = new Button();
button.Text = "Primary";
button.WidthRequest = 120;
button.HeightRequest = 60;
sfBadgeView.Content = button;
Content = sfBadgeView;The following code sample gives you the complete code for badge view with badge types and text.
<?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:local="clr-namespace:GettingStarted"
x:Class="GettingStarted.MainPage"
xmlns:badge ="clr-namespace:Syncfusion.XForms.BadgeView;assembly=Syncfusion.SfBadgeView.XForms">
<badge:SfBadgeView HorizontalOptions="Center" VerticalOptions="Center" BadgeText="20">
<badge:SfBadgeView.Content>
<Button Text="Primary" WidthRequest="120" HeightRequest="60"/>
</badge:SfBadgeView.Content>
</badge:SfBadgeView>
</ContentPage>using Xamarin.Forms;
using Syncfusion.XForms.BadgeView;
namespace GettingStarted
{
public partial class MainPage : ContentPage
{
public MainPage()
{
InitializeComponent();
SfBadgeView sfBadgeView = new SfBadgeView();
sfBadgeView.HorizontalOptions = LayoutOptions.Center;
sfBadgeView.VerticalOptions = LayoutOptions.Center;
sfBadgeView.BadgeText = "20";
//Adding image to the content of the badge view.
Button button = new Button();
button.Text = "Primary";
button.WidthRequest = 120;
button.HeightRequest = 60;
sfBadgeView.Content = button;
Content = sfBadgeView;
}
}
}The following screenshot illustrates the result of the above code sample.
You can find the complete getting started sample from this link.
See also
How to add a custom icon to the badge in Xamarin.Forms badge view (SfBadgeView)