Getting Started with Xamarin Rotator (SfRotator)
22 Aug 202324 minutes to read
This section explains you the steps to configure a SfRotator
control in a real-time scenario and also provides a walk-through on some of the customization features available in SfRotator
control.
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 SfRotator reference
You can add SfRotator
reference using one of the following methods:
Method 1: Adding SfRotator reference from nuget.org
Syncfusion Xamarin components are available in nuget.org. To add SfRotator to your project, open the NuGet package manager in Visual Studio, search for Syncfusion.Xamarin.SfRotator, and then install it.
NOTE
Install the same version of SfRotator NuGet in all the projects.
Method 2: Adding SfRotator reference from toolbox
Syncfusion also provides Xamarin Toolbox. Using this toolbox, you can drag the SfRotator
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 SfRotator 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.SfRotator.XForms.dll Syncfusion.Core.XForms.dll Syncfusion.Licensing.dll |
Android | Syncfusion.SfRotator.Android.dll Syncfusion.SfRotator.XForms.Android.dll Syncfusion.SfRotator.XForms.dll Syncfusion.Core.XForms.dll Syncfusion.Core.XForms.Android.dll Syncfusion.Licensing.dll |
iOS | Syncfusion.SfRotator.iOS.dll Syncfusion.SfRotator.XForms.iOS.dll Syncfusion.SfRotator.XForms.dll Syncfusion.Core.XForms.dll Syncfusion.Core.XForms.iOS.dll Syncfusion.Licensing.dll |
UWP | Syncfusion.SfRotator.UWP.dll Syncfusion.SfRotator.XForms.UWP.dll Syncfusion.SfRotator.XForms.dll Syncfusion.Core.XForms.dll Syncfusion.Core.XForms.UWP.dll Syncfusion.Licensing.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 SfRotator on each platform
To use SfRotator
inside an application, each platform application must initialize the SfRotator renderer. This initialization step varies from platform to platform and is discussed in the following sections.
Android and UWP
The Android and UWP launches the SfRotator
without any initialization and is enough to only initialize the Xamarin.Forms Framework to launch the application
NOTE
If you are adding the references from toolbox, this step is not needed.
iOS
To launch SfRotator
in iOS, need to create an instance of SfRotatorRenderer in FinishedLaunching overridden method of AppDelegate class in iOS Project as shown below.
public override bool FinishedLaunching(UIApplication app, NSDictionary options)
{
global::Xamarin.Forms.Forms.Init();
new SfRotatorRenderer();
LoadApplication(new App());
return base.FinishedLaunching(app, options);
}
ReleaseMode issue in UWP platform
There is a known Framework issue in UWP platform. The custom controls will not render when deployed the application in Release Mode
.
The above problem can be resolved by initializing the SfRotator assemblies in App.xaml.cs
in UWP project as like in below code snippet.
// In App.xaml.cs
protected override void OnLaunched(LaunchActivatedEventArgs e)
{
…
rootFrame.NavigationFailed += OnNavigationFailed;
// you'll need to add `using System.Reflection;`
List<Assembly> assembliesToInclude = new List<Assembly>();
//Now, add all the assemblies your app uses
assembliesToInclude.Add(typeof(SfRotatorRenderer).GetTypeInfo().Assembly);
// replaces Xamarin.Forms.Forms.Init(e);
Xamarin.Forms.Forms.Init(e, assembliesToInclude);
…
}
Create a Simple SfRotator
The SfRotator
control is configured entirely in C# code or by using XAML markup. The following steps explain on how to create a SfRotator
and configure its elements,
- Adding namespace for the added assemblies.
xmlns:rotator="clr-namespace:Syncfusion.SfRotator.XForms;assembly=Syncfusion.SfRotator.XForms"
using Syncfusion.SfRotator.XForms;
- Now add the
SfRotator
control with a required optimal name by using the included namespace.
<?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"
xmlns:syncfusion="clr-namespace:Syncfusion.SfRotator.XForms;assembly=Syncfusion.SfRotator.XForms"
x:Class="GettingStarted.RotatorControlPage">
<ContentPage.Content>
<syncfusion:SfRotator x:Name="rotator" />
</ContentPage.Content>
</ContentPage>
using Syncfusion.SfRotator.XForms;
using Xamarin.Forms;
namespace GettingStarted
{
public partial class RotatorControlPage : ContentPage
{
public RotatorControlPage()
{
InitializeComponent();
SfRotator rotator = new SfRotator();
this.Content = rotator;
}
}
}
Add Rotator Items
We can populate the rotator’s items by using any one of the following ways,
-
Through
SfRotatorItem
-
Through
ItemTemplate
Through SfRotatorItem
By passing the list of SfRotatorItem
, we can get the view of SfRotator
control. In that we can pass Images as well as Item content.
The following code example illustrates to add list of Images in Rotator ,
using Syncfusion.SfRotator.XForms;
using System.Collections.Generic;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
namespace Rotator
{
[XamlCompilation(XamlCompilationOptions.Compile)]
public partial class Rotator : ContentPage
{
SfRotator rotator = new SfRotator();
StackLayout stackLayout = new StackLayout();
public Rotator()
{
InitializeComponent ();
stackLayout.HeightRequest = 300;
List<SfRotatorItem> collectionOfItems = new List<SfRotatorItem>();
collectionOfItems.Add(new SfRotatorItem() { Image = "movie1.png" });
collectionOfItems.Add(new SfRotatorItem() { Image = "movie2.png" });
collectionOfItems.Add(new SfRotatorItem() { Image = "movie3.png" });
collectionOfItems.Add(new SfRotatorItem() { Image = "movie4.png" });
collectionOfItems.Add(new SfRotatorItem() { Image = "movie5.png" });
rotator.DataSource = collectionOfItems;
stackLayout.Children.Add(rotator);
this.Content = stackLayout;
}
}
}
The following code example illustrates to add list of items through ItemContent API in Rotator ,
using Syncfusion.SfRotator.XForms;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
namespace Rotator
{
[XamlCompilation(XamlCompilationOptions.Compile)]
public partial class Rotator : ContentPage
{
SfRotator rotator;
public Rotator()
{
InitializeComponent();
SfRotator rotator = new SfRotator();
List<SfRotatorItem> collectionOfItems = new List<SfRotatorItem>();
collectionOfItems.Add(new SfRotatorItem() { ItemContent = new Xamarin.Forms.Button() { Text = "RotatorButton", TextColor = Color.White, BackgroundColor = Color.FromHex("#7E6E6B"), FontSize = 12 } });
collectionOfItems.Add(new SfRotatorItem() { ItemContent = new Label() { Text = "RotatorLabel", BackgroundColor = Color.FromHex("#7E6E6B"), FontSize = 12 } });
collectionOfItems.Add(new SfRotatorItem() { ItemContent = new Image() { Source = "image1.png", Aspect = Aspect.AspectFit } });
rotator.DataSource = collectionOfItems;
this.Content = rotator;
}
}
}
Through ItemTemplate
ItemTemplate
property of SfRotator
control is used to customize the contents of SfRotator
items. ItemTemplate
provides common template with different data. SfRotator
items can be populated with a collection of image data. This collection includes Arrays, Lists and DataTables.
// Model Class for Rotator.
public RotatorModel(string imageString)
{
Image = imageString;
}
private String _image;
public String Image
{
get { return _image; }
set { _image = value; }
}
Create and populate Rotator collection as follows
// ViewModel class for Rotator.
public RotatorViewModel()
{
ImageCollection.Add(new RotatorModel("movie1.png"));
ImageCollection.Add(new RotatorModel("movie2.png"));
ImageCollection.Add(new RotatorModel("movie3.png"));
ImageCollection.Add(new RotatorModel("movie4.png"));
ImageCollection.Add(new RotatorModel("movie5.png"));
}
private List<RotatorModel> imageCollection = new List<RotatorModel>();
public List<RotatorModel> ImageCollection
{
get { return imageCollection; }
set { imageCollection = value; }
}
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:local="clr-namespace:Rotator"
xmlns:syncfusion="clr-namespace:Syncfusion.SfRotator.XForms;assembly=Syncfusion.SfRotator.XForms"
x:Class="Rotator.Rotator">
<ContentPage.BindingContext>
<local:RotatorViewModel/>
</ContentPage.BindingContext>
<ContentPage.Content>
<syncfusion:SfRotator x:Name="rotator"
NavigationDelay="2000"
ItemsSource="{Binding ImageCollection}"
SelectedIndex="2"
NavigationDirection="Horizontal"
NavigationStripMode="Dots"
BackgroundColor="#ececec">
<syncfusion:SfRotator.ItemTemplate>
<DataTemplate>
<Image Source="{Binding Image}"/>
</DataTemplate>
</syncfusion:SfRotator.ItemTemplate>
</syncfusion:SfRotator>
</ContentPage.Content>
</ContentPage>
using Syncfusion.SfRotator.XForms;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
namespace Rotator
{
[XamlCompilation(XamlCompilationOptions.Compile)]
public partial class Rotator : ContentPage
{
public Rotator()
{
InitializeComponent ();
SfRotator rotator = new SfRotator();
var ImageCollection = new List<RotatorModel> {
new RotatorModel ("movie1.png"),
new RotatorModel ("movie2.png"),
new RotatorModel ("movie3.png"),
new RotatorModel ("movie4.png"),
new RotatorModel ("movie5.png")
};
var itemTemplate = new DataTemplate(() =>
{
var grid = new Grid();
var nameLabel = new Image();
nameLabel.SetBinding(Image.SourceProperty, "Image");
grid.Children.Add(nameLabel);
return grid;
});
rotator.ItemTemplate = itemTemplate;
rotator.ItemsSource = ImageCollection;
this.Content = rotator;
}
}
public class RotatorModel
{
public RotatorModel(string imageString)
{
Image = imageString;
}
private String _image;
public String Image
{
get { return _image; }
set { _image = value; }
}
}
}
- Set the
BindingContext
for the items collection.
<ContentPage.BindingContext>
<local:RotatorViewModel/>
</ContentPage.BindingContext>
rotator.BindingContext = new RotatorViewModel();
IMPORTANT
Rotator’s Images are placed within the application folder for Android, iOS and UWP with build action Android Resource, Bundled Resource and Content respectively.
NOTE
In addition, rotator provides a support to load the Images from
URL
andSD Card
location.
Setting Navigation Mode
SfRotator
provides option to display the navigating items either in Thumbnail or Dots mode. The navigation mode for navigating the items can be decided using NavigationStripMode
property.
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:local="clr-namespace:Rotator"
xmlns:syncfusion="clr-namespace:Syncfusion.SfRotator.XForms;assembly=Syncfusion.SfRotator.XForms"
x:Class="Rotator.Rotator">
<ContentPage.BindingContext>
<local:RotatorViewModel/>
</ContentPage.BindingContext>
<ContentPage.Content>
<syncfusion:SfRotator x:Name="rotator"
NavigationDelay="2000"
ItemsSource="{Binding ImageCollection}"
SelectedIndex="2"
NavigationDirection="Horizontal"
NavigationStripMode="Thumbnail"
BackgroundColor="#ececec">
<syncfusion:SfRotator.ItemTemplate>
<DataTemplate>
<Image Source="{Binding Image}"/>
</DataTemplate>
</syncfusion:SfRotator.ItemTemplate>
</syncfusion:SfRotator>
</ContentPage.Content>
</ContentPage>
using Syncfusion.SfRotator.XForms;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
namespace Rotator
{
[XamlCompilation(XamlCompilationOptions.Compile)]
public partial class Rotator : ContentPage
{
public Rotator()
{
InitializeComponent ();
SfRotator rotator = new SfRotator();
var ImageCollection = new List<RotatorModel> {
new RotatorModel ("movie1.png"),
new RotatorModel ("movie2.png"),
new RotatorModel ("movie3.png"),
new RotatorModel ("movie4.png"),
new RotatorModel ("movie5.png")
};
var itemTemplate = new DataTemplate(() =>
{
var grid = new Grid();
var nameLabel = new Image();
nameLabel.SetBinding(Image.SourceProperty, "Image");
grid.Children.Add(nameLabel);
return grid;
});
rotator.ItemTemplate = itemTemplate;
rotator.NavigationStripMode = NavigationStripMode.Thumbnail;
rotator.ItemsSource = ImageCollection;
this.Content = rotator;
}
}
public class RotatorModel
{
public RotatorModel(string imageString)
{
Image = imageString;
}
private String _image;
public String Image
{
get { return _image; }
set { _image = value; }
}
}
}
Customizing Position
The placement position of navigation strip items such as Thumbnail
or Dots
can be customized in SfRotator
. This can be specified using NavigationStripPosition
property.
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:local="clr-namespace:Rotator"
xmlns:syncfusion="clr-namespace:Syncfusion.SfRotator.XForms;assembly=Syncfusion.SfRotator.XForms"
x:Class="Rotator.Rotator">
<ContentPage.BindingContext>
<local:RotatorViewModel/>
</ContentPage.BindingContext>
<ContentPage.Content>
<syncfusion:SfRotator x:Name="rotator"
NavigationDelay="2000"
ItemsSource="{Binding ImageCollection}"
SelectedIndex="2"
NavigationDirection="Horizontal"
NavigationStripMode="Dots"
BackgroundColor="#ececec"
NavigationStripPosition="Top">
<syncfusion:SfRotator.ItemTemplate>
<DataTemplate>
<Image Source="{Binding Image}"/>
</DataTemplate>
</syncfusion:SfRotator.ItemTemplate>
</syncfusion:SfRotator>
</ContentPage.Content>
</ContentPage>
using Syncfusion.SfRotator.XForms;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms;
using Xamarin.Forms.Xaml;
namespace Rotator
{
[XamlCompilation(XamlCompilationOptions.Compile)]
public partial class Rotator : ContentPage
{
public Rotator()
{
InitializeComponent ();
SfRotator rotator = new SfRotator();
var ImageCollection = new List<RotatorModel> {
new RotatorModel ("movie1.png"),
new RotatorModel ("movie2.png"),
new RotatorModel ("movie3.png"),
new RotatorModel ("movie4.png"),
new RotatorModel ("movie5.png")
};
var itemTemplate = new DataTemplate(() =>
{
var grid = new Grid();
var nameLabel = new Image();
nameLabel.SetBinding(Image.SourceProperty, "Image");
grid.Children.Add(nameLabel);
return grid;
});
rotator.ItemTemplate = itemTemplate;
rotator.NavigationStripMode = NavigationStripMode.Dots;
rotator.NavigationStripPosition = NavigationStripPosition.Top;
rotator.ItemsSource = ImageCollection;
this.Content = rotator;
}
}
public class RotatorModel
{
public RotatorModel(string imageString)
{
Image = imageString;
}
private String _image;
public String Image
{
get { return _image; }
set { _image = value; }
}
}
}
You can find the complete getting started sample from this link.