Xamarin.Forms - Working with RefreshView

In this blog post, you will learn how to implement Pull to Refresh the Entire Page using RefreshView in Xamarin.Forms.

Introduction

Xamarin.Forms code runs on multiple platforms - each of which has its own filesystem. This means that reading and writing files are most easily done using the native file APIs on each platform. Alternatively, embedded resources are a simpler solution to distribute data files with an app.

RefreshView (Pull to Refresh)

RefreshView is a container control that provides a pull to refresh functionality for scrollable content. Therefore, the child of a RefreshView must be a scrollable control, such as ScrollView, CollectionView, or ListView.

Prerequisites

• Visual Studio 2017 or later (Windows or Mac)

Setting up a Xamarin.Forms Project

Start by creating a new Xamarin.Forms project. You wíll learn more by going through the steps yourself.

Create a new or existing Xamarin forms(.Net standard) Project. With Android and iOS Platform.

Use RefreshView

Make sure your Controls should be within ScrollView.

Setting up the User Interface

Here, Add RefreshView in your View. Make sure your content should be within ScrollView.

MainPage.Xaml

Add RefreshCommand 

Now, Add RefreshCommand for your RefreshView. This Command will perform while pull to refresh. After Refresh your data don't forget set IsRefreshing=false;

MainPageViewModel.cs

Click the "Play" button to try it out.

Change Refresh ActivityIndicator Color

Now, Change Refresh ActivityIndicator Color. Set RefreshColor="Color", Check bellow code.

MainPage.xaml

Click the "Play" button to try it out.

Wow, It's Working.😍

I hope you have understood how to use implement Pull to Refresh the Entire Page using RefreshView in Xamarin.Forms.

Thanks for reading. Please share your comments and feedback. Happy Coding 😀

Xamarin.Forms - ListView with Pull to Refresh

In this blog, you will learn how to use ListView with Pull to Refresh in Xamarin.Forms

Introduction

Xamarin.Forms code runs on multiple platforms - each of which has its own filesystem. This means that reading and writing files are the most easily done tasks using native file APIs on each platform. Alternatively, embedded resources are also a simpler solution to distribute the data files with an app.

Pull to Refresh

Xamarin Forms ListView control has the ability to allow the user to pull down from the top of the ListView to trigger a refresh command. When the user triggers a PullToRefresh the Command will be invoked the Refreshed event.


Prerequisites

• Visual Studio 2017(Windows or Mac)

Setting up a Xamarin.Forms Project

Start by creating a new Xamarin.Forms project. You’ll learn more by going through the steps yourself.
Choose the  Cross-platform App project under Visual C#-->Cross-platform in the New Project dialog.

Now Select the Blank App and Choose Portable Class Library(PCL).

Subsequently, go to the solution. In there, you get all the files and sources of your project (PCL). Now, select XAML page and double-click to open the MainPage.Xaml page.
You now have a basic Xamarin.Forms app. Click the Play button to try it out.

Setting up the User Interface

In this step create a simple ListView.

Now, write the following code.

MainPage.xaml

Now, add a list item to ListView. and write the following code.

MainPage.xaml.cs

Click the Play button to try it out.

Implement Pull to Refresh

In this step, you need to implement the Pull to Refresh in MainPage.Xaml.

IsPullToRefreshEnabled="True"

Now, write the following code.

MainPage.xaml


In this step add the RefreshCommand to ListView

Command RefreshCommand = new Command();

Now, write the code given below.

MainPage.xaml.cs

Full Code - MainPage.Xaml.cs

MainPage.Xaml.cs

Click the Play button to try it out.

I hope you have understood how to use ListView with Pull to Refresh in Xamarin.forms.

Thanks for reading. Please share comments and feedback.