Add pull-to-refresh functionality to your Android app quickly and easily.

PullToRefresharp is the only C# library that provides pull-to-refresh functionality to ListView, GridView, and ScrollView on Android. It is simple to integrate with, customizable and extensible.

See it in action here: PullToRefresharp in Action

Add the support library:

Ensure that your project has a reference to Mono.Android.Support.v4 This allows PullToRefresharp to be compatible with Gingerbread (Android 2.3) and lower.

Update your layout:

<pulltorefresharp.android.views.ViewWrapper
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

    <pulltorefresharp.android.widget.GridView
        android:id="@id/myGridView" />

</pulltorefresharp.android.views.ViewWrapper>

Hook into the RefreshActivated event

// Get a reference to the view
var myGridView = FindViewById<PullToRefresharp.Android.Widget.GridView>(Resource.Id.myGridView);
myGridView.RefreshActivated += (o, e) { RefreshMyContent(); };

// when content refresh complete
myGridView.OnRefreshCompleted();

Out of the box PullToFrefresharp gives you a clean pull-to-refresh header UI and assets. You can change the colors, image assets, or strings via XML attributes, or include your own fully custom header.

If you want to add pull-to-refresh to a view type other than GridView, ListView, or ScrollView, you can! Simply create a subclass of the view and implement the IPullToRefreshWrappedView interface (there's almost nothing to it, all you need to do is write a little bit of glue code to proxy most calls to PullToRefresharp.Delegates.ViewDelegate).

Overriding the stock header is accomplished by adding your header layout to the ViewWrapper, i.e.

<pulltorefresharp.android.views.ViewWrapper>
    <LinearLayout>
        <!-- your custom header -->
    </LinearLayout>
    <pulltorefresharp.android.widget.GridView />
</pulltorefresharp.android.views.ViewWrapper>

Use ptrsharp_header.xml as a reference.

PullToRefresharp on GitHub

PullToRefresharp is free and open source software. If there's something you want to add, please do! The goal of PullToRefresharp is to provide a robust pull-to-refresh framework for all Xamarin.Android (and possiby Xamarin.iOS in the future) applications.