> For the complete documentation index, see [llms.txt](https://docs.apryse.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.apryse.com/xamarin/annotation/samples.md).

# Code samples to add annotations to PDFs in Xamarin

Learn how to add or edit PDF annotations like hyperlinks, stamps, and more with UI samples in Xamarin.Android and Xamarin.iOS showcase apps. Try it now! The Apryse Xamarin SDK streamlines secure, serv

[Add or edit PDF annotations](/xamarin/get-started/samples.md#annotation) Shows how to add or edit PDF annotations (e.g. hyperlink, intra-document link, stamp, rubber stamp, file attachment, sound, text, free-text, line, circle, square, polygon, polyline, highlight, squiggly, caret, and ink).

## UI samples

{% hint style="info" %}
Please note that **native code** is being used in the following showcase app(s). Apryse SDK for Xamarin provides the same features but the source code for the showcase application(s) is only available in native languages.
{% endhint %}

#### Xamarin.Android

[Android showcase sample app](/android/samples/package-samples/sample-showcase.md) The showcase demonstrates some features of the SDK. To view the annotation demo, select any of the samples found under `Annotation` in the app such as:

* [Annotation List](/android/samples/package-samples/sample-showcase.md)
* [Annotation Toolbar](/android/samples/package-samples/sample-showcase.md)
* [Undo and Redo](/android/samples/package-samples/sample-showcase.md)
* [Rubber Stamp](/android/samples/package-samples/sample-showcase.md)

#### Xamarin.iOS

[iOS showcase sample app](/ios/samples/run-sample.md) The showcase demonstrates some features of the SDK. To view the annotation demo, select any of the samples found under `Annotation` in the app such as:

* [Annotation List](/ios/samples/run-sample.md)
* [Annotation Toolbar](/ios/samples/run-sample.md)
* [Image Stamp](/ios/samples/run-sample.md)


---

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