--- title: "File Annotation Creation" canonical_url: "https://www.nutrient.io/guides/android/samples/file-annotation-creation-kotlin/" md_url: "https://www.nutrient.io/guides/android/samples/file-annotation-creation-kotlin.md" last_updated: "2026-05-15T19:10:04.916Z" description: "Embed PDF, image, video, and text files as file annotations." --- # File Annotation Creation Embed PDF, image, video, and text files as file annotations. [Get Started](https://www.nutrient.io/sdk/android/getting-started.md) [All Samples](https://www.nutrient.io/guides/android/samples.md) [Download](https://www.nutrient.io/guides/android/downloads.md) [Launch Demo](https://www.nutrient.io/demo/) --- ```kotlin /* * Copyright © 2020-2026 PSPDFKit GmbH. All rights reserved. * * The PSPDFKit Sample applications are licensed with a modified BSD license. * Please see License for details. This notice may not be removed from this file. */ package com.pspdfkit.catalog.examples.kotlin import android.content.Context import android.graphics.Color import android.graphics.RectF import android.net.Uri import androidx.activity.viewModels import androidx.annotation.UiThread import com.pspdfkit.annotations.FileAnnotation import com.pspdfkit.catalog.R import com.pspdfkit.catalog.SdkExample import com.pspdfkit.catalog.tasks.ExtractAssetTask import com.pspdfkit.configuration.activity.PdfActivityConfiguration import com.pspdfkit.document.PdfDocument import com.pspdfkit.document.files.EmbeddedFileSource import com.pspdfkit.document.providers.AssetDataProvider import com.pspdfkit.ui.PdfActivity import com.pspdfkit.ui.PdfActivityIntentBuilder /** * This example shows how to create file annotations programmatically. */ class FileAnnotationCreationExample(context: Context) : SdkExample( context, R.string.fileAnnotationCreationExampleTitle, R.string.fileAnnotationCreationExampleDescription, ) { override fun launchExample(context: Context, configuration: PdfActivityConfiguration.Builder) { // Turn off saving, so we have the clean original document every time the example is launched. configuration.autosaveEnabled(false) // Extract the document from the assets. The launched activity will add file annotations to that document. ExtractAssetTask.extract(WELCOME_DOC, title, context) { documentFile -> val intent = PdfActivityIntentBuilder.fromUri(context, Uri.fromFile(documentFile)).configuration(configuration.build()).activityClass(FileAnnotationCreationActivity::class.java).build() context.startActivity(intent) } } } class FileAnnotationCreationActivity : PdfActivity() { private val viewModel: AnnotationCreationViewModel by viewModels() @UiThread override fun onDocumentLoaded(document: PdfDocument) { viewModel.createObjects { val pageIndex = 0 // Create file annotation with embedded pdf file. // File description and modification date is optional. val fileAnotation = FileAnnotation( pageIndex, RectF(180f, 692f, 212f, 660f), EmbeddedFileSource( AssetDataProvider("Annotations.pdf"), "Annotations.pdf", null, ), ).apply { iconName = FileAnnotation.GRAPH color = Color.GREEN } requirePdfFragment().addAnnotationToPage(fileAnotation, false) // Create file annotation with embedded image file. val imageFileAnnotation = FileAnnotation( pageIndex, RectF(244f, 692f, 276f, 660f), EmbeddedFileSource( AssetDataProvider("images/android.png"), "android.png", null, ), ).apply { iconName = FileAnnotation.PAPERCLIP color = Color.BLUE } requirePdfFragment().addAnnotationToPage(imageFileAnnotation, false) // Create file annotation with embedded video file. val videoFileAnnotation = FileAnnotation( pageIndex, RectF(308f, 692f, 340f, 660f), EmbeddedFileSource( AssetDataProvider("media/videos/small.mp4"), "small.mp4", "Example of an annotation with embedded video file.", ), ).apply { iconName = FileAnnotation.PUSH_PIN color = Color.RED } requirePdfFragment().addAnnotationToPage(videoFileAnnotation, false) // File source can also be directly specified as byte array with file's data. // In this case we create file annotation from UTF-8 encoded string. val textFileAnnotation = FileAnnotation( pageIndex, RectF(372f, 692f, 404f, 660f), EmbeddedFileSource( "Plain text data".toByteArray(), "note.txt", "Example of an annotation with embedded plain-text file.", ), ).apply { iconName = FileAnnotation.TAG color = Color.YELLOW } requirePdfFragment().addAnnotationToPage(textFileAnnotation, false) } } } ``` This code sample is an example that illustrates how to use our SDK. Please adapt it to your specific use case. --- ## Related pages - [Application Policy](/guides/android/samples/application-policy-kotlin.md) - [Custom Form Highlight Color](/guides/android/samples/custom-form-highlight-color-java.md) - [Custom Page Templates](/guides/android/samples/custom-page-templates-java.md) - [Digital Signature (Basic)](/guides/android/samples/digital-signature-basic-kotlin.md) - [Disabled Annotation Property](/guides/android/samples/disabled-annotation-property-java.md) - [Image Document](/guides/android/samples/image-document-kotlin.md) - [Compose Image Document](/guides/android/samples/compose-image-document-kotlin.md) - [Inline Multimedia](/guides/android/samples/inline-multimedia-kotlin.md) - [JavaScript Form Filling](/guides/android/samples/javascript-form-filling-kotlin.md) - [Overlay Visibility](/guides/android/samples/overlay-visibility-kotlin.md) - [PdfFragment](/guides/android/samples/pdffragment-kotlin.md) - [Reader View](/guides/android/samples/reader-view-kotlin.md) - 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