--- title: "Tabbed Documents" canonical_url: "https://www.nutrient.io/guides/android/samples/tabbed-documents-kotlin/" md_url: "https://www.nutrient.io/guides/android/samples/tabbed-documents-kotlin.md" last_updated: "2026-05-15T19:10:04.916Z" description: "Open multiple documents in a tabbed interface using DocumentCoordinator." --- # Tabbed Documents Open multiple documents in a tabbed interface using DocumentCoordinator. [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.app.Activity import android.content.Context import android.content.Intent import android.net.Uri import android.os.Bundle import android.widget.ImageView import com.pspdfkit.Nutrient 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.configuration.activity.TabBarHidingMode import com.pspdfkit.document.ImageDocumentUtils import com.pspdfkit.document.download.DownloadJob import com.pspdfkit.document.download.DownloadProgressFragment import com.pspdfkit.document.download.DownloadRequest import com.pspdfkit.ui.DocumentCoordinator import com.pspdfkit.ui.DocumentDescriptor import com.pspdfkit.ui.PdfActivity import com.pspdfkit.ui.PdfActivityIntentBuilder import java.io.File /** * This example shows how to add document tabs in the default [PdfActivity]. */ class DocumentTabsExample(context: Context) : SdkExample(context, R.string.documentTabsExampleTitle, R.string.documentTabsExampleDescription) { override fun launchExample(context: Context, configuration: PdfActivityConfiguration.Builder) { // Make the tab bar always visible. configuration.setTabBarHidingMode(TabBarHidingMode.SHOW) // First, extract the initial document from the app's assets and place it in the device's internal storage. ExtractAssetTask.extract(WELCOME_DOC, title, context) { documentFile -> // Launch the custom example activity using the document and configuration. val intent = PdfActivityIntentBuilder.fromUri(context, Uri.fromFile(documentFile)).configuration(configuration.build()).activityClass(DocumentTabsActivity::class).build() // Start the activity for the extracted document. context.startActivity(intent) } } } // We're temporarily suppressing the warning for startActivityForResult and OnActivityResult being deprecated. // Issue: https://github.com/PSPDFKit/PSPDFKit/issues/31881 @Suppress("DEPRECATION") class DocumentTabsActivity : PdfActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) // PdfActivity can handle multiple documents out of the box using its internal document // coordinator object. The activity also hosts a tab bar, which observes documents added to // the document coordinator, and will automatically display tabs for them. It also delegates // user interaction to the activity (e.g. closing tabs, changing the active document, etc.). val documentCoordinator = documentCoordinator if (document == null && savedInstanceState == null) { // For this example, we're loading multiple PDF documents from the app's assets, for // displaying them in the activity's tab bar. We use the `DocumentCoordinator` object // which is provided by the activity, to add each document as soon as it is loaded. This // is everything that is required to make `PdfActivity` show the documents inside the tab bar. for (assetName in assetFiles) { // Extract document from the app's assets and place it in the device's internal storage. ExtractAssetTask.extract(assetName, assetName, this) { documentFile -> documentCoordinator.addDocument(DocumentDescriptor.fromUri(Uri.fromFile(documentFile))) } } // Image documents are also supported. ExtractAssetTask.extract("images/android.png", "images/android.png", this) { documentFile -> val documentDescriptor = DocumentDescriptor.imageDocumentFromUri(Uri.fromFile(documentFile)) documentDescriptor.setTitle("Android Image Document") documentCoordinator.addDocument(documentDescriptor) } } // You can also customize the tab bar layout. For example, to insert an "Add tab" button at // the start of the tab bar, simply retrieve the `PdfTabBar` from the activity, and add a // view to it. pspdfKitViews.tabBar?.apply { val addTabButton = layoutInflater.inflate(R.layout.item_add_button, this, false) as ImageView addTabButton.setOnClickListener { addNewTab() } addView(addTabButton, 0) } } private fun addNewTab() { // Show system document picker to allow user to pick document that will be displayed in the added tab. val intent = Intent(Intent.ACTION_OPEN_DOCUMENT) intent.addCategory(Intent.CATEGORY_OPENABLE) intent.type = "*/*" intent.putExtra(Intent.EXTRA_MIME_TYPES, arrayOf("application/pdf", "image/*")) startActivityForResult(intent, REQUEST_OPEN_DOCUMENT) } @Deprecated("Deprecated in Java") override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) { super.onActivityResult(requestCode, resultCode, data) if (requestCode == REQUEST_OPEN_DOCUMENT && resultCode == Activity.RESULT_OK && data!= null) { val uri = data.data?: return val isImageFile = ImageDocumentUtils.isImageUri(this, uri) // Some URIs can be opened directly, including local filesystem, app assets, and content provider URIs. if (Nutrient.isOpenableUri(this, uri)) { showDocumentInNewTab(uri, isImageFile) } else { // Find the DownloadProgressFragment for showing download progress, or create a new one. val downloadFragment = supportFragmentManager.findFragmentByTag( DOWNLOAD_PROGRESS_FRAGMENT, ) as DownloadProgressFragment??: run { val downloadRequest = DownloadRequest.Builder(this).uri(uri).build() val job = DownloadJob.startDownload(downloadRequest) val downloadFragment = DownloadProgressFragment() downloadFragment.show(supportFragmentManager, DOWNLOAD_PROGRESS_FRAGMENT) downloadFragment.job = job downloadFragment } // Once the download is complete we show the downloaded document in a new tab. downloadFragment.job.setProgressListener( object : DownloadJob.ProgressListenerAdapter() { override fun onComplete(output: File) { showDocumentInNewTab(Uri.fromFile(output), isImageFile) } }, ) } } } /** * Adds document from Uri to the [DocumentCoordinator] and makes it visible immediately. */ private fun showDocumentInNewTab(uri: Uri, isImageDocument: Boolean) { val documentDescriptor = if (isImageDocument) { DocumentDescriptor.imageDocumentFromUri(uri) } else { DocumentDescriptor.fromUri(uri) } documentCoordinator.addDocument(documentDescriptor) documentCoordinator.setVisibleDocument(documentDescriptor) } companion object { private val assetFiles = arrayOf("Classbook.pdf", "Aviation.pdf", "Annotations.pdf") private const val REQUEST_OPEN_DOCUMENT = 1 private const val REQUEST_ASK_FOR_PERMISSION = 2 private const val DOWNLOAD_PROGRESS_FRAGMENT = "DownloadProgressFragment" } } ``` 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) - [Playground](/guides/android/samples/playground-kotlin.md) - [JavaScript Calculator](/guides/android/samples/javascript-calculator-kotlin.md) - [Text Field Suggestions](/guides/android/samples/text-field-suggestions-kotlin.md) - [Thumbnail Bar Modes](/guides/android/samples/thumbnail-bar-modes-kotlin.md) - [Signature Storage Database](/guides/android/samples/signature-storage-database-kotlin.md) - [Selection Customization](/guides/android/samples/selection-customization-java.md) - [Password Protected PDF](/guides/android/samples/password-protected-pdf-kotlin.md) - [Scientific Paper](/guides/android/samples/scientific-paper-kotlin.md) - [Try Instant](/guides/android/samples/try-instant-kotlin.md) - [Merge Documents](/guides/android/samples/merge-documents-kotlin.md) - [Annotation Rendering](/guides/android/samples/annotation-rendering-kotlin.md) - [Custom Data Provider](/guides/android/samples/custom-data-provider-kotlin.md) - [Annotations with Transparency](/guides/android/samples/annotations-with-transparency-kotlin.md) - [Annotation Flags](/guides/android/samples/annotation-flags-kotlin.md) - [AI Assistant (Multiple Documents, ViewPager)](/guides/android/samples/ai-assistant-multiple-documents-viewpager-kotlin.md) - [Custom Sharing Menu](/guides/android/samples/custom-sharing-menu-java.md) - [Add LTV to Existing Signature](/guides/android/samples/add-ltv-to-existing-signature-kotlin.md) - [Custom Toolbar Grouping](/guides/android/samples/custom-toolbar-grouping-java.md) - [Custom Layout](/guides/android/samples/custom-layout-kotlin.md) - [Custom ActionBar Actions](/guides/android/samples/custom-actionbar-actions-kotlin.md) - [Custom Activity Toolbars](/guides/android/samples/custom-activity-toolbars-java.md) - [Custom Note Hinter](/guides/android/samples/custom-note-hinter-kotlin.md) - [Custom Main Toolbar](/guides/android/samples/custom-main-toolbar-kotlin.md) - [Annotation Configuration](/guides/android/samples/annotation-configuration-kotlin.md) - [Annotation Selection Styling](/guides/android/samples/annotation-selection-styling-kotlin.md) - [Custom Search UI (Compose)](/guides/android/samples/custom-search-ui-compose-kotlin.md) - [Document Switcher](/guides/android/samples/document-switcher-java.md) - [File Annotation Creation](/guides/android/samples/file-annotation-creation-kotlin.md) - [Dynamic Pages on Scroll](/guides/android/samples/dynamic-pages-on-scroll-kotlin.md) - [Custom Activity Form Editing](/guides/android/samples/custom-activity-form-editing-java.md) - [Custom Stamp Annotations](/guides/android/samples/custom-stamp-annotations-java.md) - [Custom Outline Provider](/guides/android/samples/custom-outline-provider-kotlin.md) - [Compose Navigation](/guides/android/samples/compose-navigation-kotlin.md) - [Fragment Runtime Configuration](/guides/android/samples/fragment-runtime-configuration-kotlin.md) - [Annotation Overlay](/guides/android/samples/annotation-overlay-java.md) - [Instant Document JSON](/guides/android/samples/instant-document-json-kotlin.md) - [DocumentView Composable](/guides/android/samples/documentview-composable-kotlin.md) - [Form Creation](/guides/android/samples/form-creation-kotlin.md) - [Document Download](/guides/android/samples/document-download-kotlin.md) - [JavaScript Actions](/guides/android/samples/javascript-actions-kotlin.md) - [Instant JSON Attachment](/guides/android/samples/instant-json-attachment-kotlin.md) - [Digital Signature (Manual)](/guides/android/samples/digital-signature-manual-kotlin.md) - [Digital Signature (Third-Party)](/guides/android/samples/digital-signature-third-party-kotlin.md) - [Inline Search](/guides/android/samples/inline-search-java.md) - [Form Filling](/guides/android/samples/form-filling-kotlin.md) - [Form Click Intercept (Compose)](/guides/android/samples/form-click-intercept-compose-kotlin.md) - [Document Sharing](/guides/android/samples/document-sharing-java.md) - [Custom Download Dialog](/guides/android/samples/custom-download-dialog-java.md) - [Download Progress](/guides/android/samples/download-progress-kotlin.md) - [Popup Toolbar Customization](/guides/android/samples/popup-toolbar-customization-kotlin.md) - [Custom Sharing Dialog](/guides/android/samples/custom-sharing-dialog-java.md) - [PDF from Image](/guides/android/samples/pdf-from-image-kotlin.md) - [Digital Signature (Two-Step)](/guides/android/samples/digital-signature-two-step-kotlin.md) - [Remote URL](/guides/android/samples/remote-url-kotlin.md) - [PdfUiFragment](/guides/android/samples/pdfuifragment-kotlin.md) - [Runtime Configuration](/guides/android/samples/runtime-configuration-kotlin.md) - [Sound Extraction](/guides/android/samples/sound-extraction-kotlin.md) - [Document from Canvas](/guides/android/samples/document-from-canvas-kotlin.md) - [Watermarks](/guides/android/samples/watermarks-kotlin.md) - [Programmatic Zoom](/guides/android/samples/programmatic-zoom-kotlin.md) - [Signature Parcelize](/guides/android/samples/signature-parcelize-kotlin.md) - [OCR](/guides/android/samples/ocr-kotlin.md) - [Vertical Scrollbar](/guides/android/samples/vertical-scrollbar-java.md) - [Split View](/guides/android/samples/split-view-java.md) - 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