> 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/annotation-list.md).

# Annoatation list

Learn how to view annotations as a list in Xamarin.Android with AnnotationDialogFragment. Set up listeners, manage read-only access, and more. Explore the Xamarin.iOS equivalent for PTAnnotationViewCo

Annoations can be viewed as a list in this UI component

{% tabs %}
{% tab title="Android" %}

## View annotations as list in Xamarin.Android

{% hint style="info" %}
**This tutorial only applies to Xamarin.Android. See Xamarin.iOS equivalent here .**
{% endhint %}

The [`AnnotationDialogFragment`](https://sdk.apryse.com/api/xamarinandroid/tools/api/pdftron.PDF.Controls.AnnotationDialogFragment.html) displays a list of all annotations in a document being viewed by a [`PDFViewCtrl`](https://sdk.apryse.com/api/xamarinandroid/pdfnet/api/pdftron.PDF.PDFViewCtrl.html). The list also contains any comments that have been added to the annotations.

![](https://653871032-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgjsBtuYmcKhWOdM9VCg4%2Fuploads%2Fgit-blob-47fffd5031d4592a346729695d0f7ad798a72552%2F8deb824fe864a598e715847f2700a0e82ce82401-1080x2160.png?alt=media)

## Show annotation dialog

To show an annotation dialog fragment in your activity, create a new instance of [`AnnotationDialogFragment`](https://sdk.apryse.com/api/xamarinandroid/tools/api/pdftron.PDF.Controls.AnnotationDialogFragment.html) by calling `newInstance()` and setting the [`PDFViewCtrl`](https://sdk.apryse.com/api/xamarinandroid/pdfnet/api/pdftron.PDF.PDFViewCtrl.html):

{% code lineNumbers="true" %}

```csharp
fun showBookmarksDialog(fragmentManager: FragmentManager, pdfViewCtrl: PDFViewCtrl): BookmarksDialogFragment {
    var bookmarksDialog = pdftron.PDF.Dialog.BookmarksDialogFragment.NewInstance();
    bookmarksDialog.SetPdfViewCtrl(pdfViewCtrl);
    List<DialogFragmentTab> tabs = new List<DialogFragmentTab>();
    var annotationsTab = new DialogFragmentTab(
        Java.Lang.Class.FromType(typeof(AnnotationDialogFragment)), BookmarksTabLayout.TagTabAnnotation, null, "Annotations", "Bookmarks Dialog", null);
    tabs.Add(annotationsTab);
    bookmarksDialog.SetDialogFragmentTabs(tabs);
    bookmarksDialog.SetStyle((int)DialogFragmentStyle.NoTitle, Resource.Style.PDFTronAppTheme);
    bookmarksDialog.Show(fragmentManager, "bookmarks_dialog");
    return bookmarksDialog;
}
```

{% endcode %}

## Listener

By calling `setAnnotationDialogListener(AnnotationDialogListener)`, you can set a listener to be notified when an annotation item is clicked, or when document annotations are exported to a PDF doc when users click on the export floating action button.

## Read-only

If the document has write access, users can delete existing annotations by long-pressing on the annotation. To specify whether the document is read-only call `setReadOnly(boolean)`.
{% endtab %}

{% tab title="iOS" %}

## View annotations as list in Xamarin.iOS

{% hint style="info" %}
**This tutorial only applies to Xamarin.iOS. See Xamarin.Android equivalent here .**
{% endhint %}

The [`PTAnnotationViewController`](https://sdk.apryse.com/api/xamarinios/tools/api/pdftron.PDF.Controls.PTAnnotationViewController.html) class shows a list of all annotations in a document being viewed by a [`PTPDFViewCtrl`](https://sdk.apryse.com/api/xamarinios/tools/api/pdftron.PDF.PDFViewCtrl.html). The list contains any comments that have been added to the annotations.

![](https://653871032-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FgjsBtuYmcKhWOdM9VCg4%2Fuploads%2Fgit-blob-3b4fe3f15304cc68df980f8cdd4bc58c4130a6d3%2F08935ed43ed617260c9ad07c1e040c5114e3ba47-1242x2208.png?alt=media)

*The annotations list control is part of the Tools library, so make sure you have* [*added the Tools library to your project*](/xamarin/ui-customization/setup.md)*.*

## Show an annotation view controller

To create a new annotation view controller instance and display it from another view controller, supply a `PTPDFViewCtrl` instance to the `PTAnnotationViewController` designated initializer:

{% code lineNumbers="true" %}

```csharp
var annotationViewController = new pdftron.PDF.Controls.PTAnnotationViewController (mPdfViewCtrl);
annotationViewController.AnnotationViewControllerAnnotationSelected += (object sender, AnnotationViewControllerAnnotationSelectedEventArgs e) => {
    // perform custom action
    this.DismissViewController (true, null);
};
annotationViewController.AnnotationViewControllerDidCancel += (object sender, EventArgs e) => {
    this.DismissViewController (true, null);
};

var navigationController = new UINavigationController (annotationViewController);
if (UserInterfaceIdiomIsPad)
{
    navigationController.ModalPresentationStyle = UIModalPresentationStyle.Popover;
    navigationController.PopoverPresentationController.BarButtonItem = annotationListButton;
}

this.PresentViewController (navigationController, true, null);
```

{% endcode %}

{% hint style="info" %}
**The annotation view controller must be pushed onto a navigation controller's stack before being shown.**
{% endhint %}

{% hint style="info" %}
**Presenting on iPads:**

The annotation view controller is designed to be presented in a popover on iPads. To do so, you must provide the `PTAnnotationViewController`'s [`PopoverPresentationController`](https://docs.microsoft.com/en-us/dotnet/api/uikit.uipopoverpresentationcontroller) with either:

* a [`SourceRect`](https://docs.microsoft.com/en-us/dotnet/api/uikit.uipopoverpresentationcontroller.sourcerect#UIKit_UIPopoverPresentationController_SourceRect) AND
* a [`SourceView`](https://docs.microsoft.com/en-us/dotnet/api/uikit.uipopoverpresentationcontroller.sourceview#UIKit_UIPopoverPresentationController_SourceView)

OR

* a [`BarButtonItem`](https://docs.microsoft.com/en-us/dotnet/api/uikit.uipopoverpresentationcontroller.barbuttonitem#UIKit_UIPopoverPresentationController_BarButtonItem)

as in the example above.
{% endhint %}

You can set a delegate to be notified by the annotation view controller when annotations are selected with the `PTAnnotationViewControllerDelegate` protocol. (See the CompleteReader sample for usage of the `PTAnnotationViewController`.)
{% endtab %}
{% endtabs %}


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