Tuesday, October 04, 2016

Displaying GIFs in a UWP app #UWPLunch

All this month, I'm taking some time each day to explore (and document) things that are related to UWP development that I haven't fully investigated or used before. While doing it over lunch each day I'm calling it #UWPLunch.

Displaying GIFs in XAML apps has been notoriously tricky in the past. A mix of licensing issues and a lack of native support meant that complicated workarounds were often needed. The most common solution involved the use of an embedded webbrowser control but it was a far from ideal solution.

With the anniversary update that's changed. GIFs and even animated GIFs are now supported.

Simply drop this in a blank app.

<Image Source="https://api.giphy.com/img/giphy_search.gif" />

and get something that looks like this (minus the animation)

Going a bit further I wanted something that would show a few more animated GIFs at once so I created an app that's pointed at the giphy trending API.


It was just a case of grabbing the API response and serializing it as something suitable

    var json = await new HttpClient().GetStringAsync(new Uri("http://api.giphy.com/v1/gifs/trending?api_key=dc6zaTOxFJmzC", UriKind.Absolute));

    this.DataContext = JsonConvert.DeserializeObject<ApiResponse>(json);

and then displaying it on the view:

        <GridView ItemsSource="{Binding data}" >
            <GridView.ItemTemplate>
                <DataTemplate>
                    <Image Source="{Binding images.original.url}"
                           MaxWidth="200" />
                </DataTemplate>
            </GridView.ItemTemplate>
            <GridView.ItemsPanel>
                <ItemsPanelTemplate>
                    <ItemsWrapGrid Orientation="Horizontal" />
                </ItemsPanelTemplate>
            </GridView.ItemsPanel>
        </GridView>


And voila, a lovely app showing lots of animated gifs:


Apps requiring the display of gifs are no longer an issue. :)



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