--- title: "Construction Floor Plan" canonical_url: "https://www.nutrient.io/guides/android/samples/construction-floor-plan-kotlin/" md_url: "https://www.nutrient.io/guides/android/samples/construction-floor-plan-kotlin.md" last_updated: "2026-05-15T19:10:04.916Z" description: "Display a building floor plan with custom pin stamps, hide/show annotations, and a custom toolbar." --- # Construction Floor Plan Display a building floor plan with custom pin stamps, hide/show annotations, and a custom toolbar. [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 © 2022-2026 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. */ @file:Suppress("DEPRECATION") package com.pspdfkit.catalog.examples.kotlin import android.content.Context import android.net.Uri import android.os.Bundle import android.view.Menu import androidx.appcompat.content.res.AppCompatResources import androidx.core.content.ContextCompat import androidx.core.graphics.drawable.DrawableCompat import androidx.core.graphics.drawable.toBitmap import androidx.lifecycle.lifecycleScope import com.pspdfkit.annotations.Annotation import com.pspdfkit.annotations.AnnotationFlags import com.pspdfkit.annotations.AnnotationType import com.pspdfkit.annotations.actions.HideAction import com.pspdfkit.annotations.configuration.StampAnnotationConfiguration import com.pspdfkit.annotations.stamps.StampPickerItem import com.pspdfkit.catalog.R import com.pspdfkit.catalog.tasks.ExtractAssetTask import com.pspdfkit.configuration.activity.PdfActivityConfiguration import com.pspdfkit.document.PdfDocument import com.pspdfkit.ui.PdfActivity import com.pspdfkit.ui.PdfActivityIntentBuilder import com.pspdfkit.ui.annotations.OnAnnotatingModeChangeListener import com.pspdfkit.ui.annotations.OnAnnotationSelectedListener import com.pspdfkit.ui.special_mode.controller.AnnotatingController import com.pspdfkit.ui.special_mode.controller.AnnotationSelectionController import com.pspdfkit.ui.toolbar.AnnotationToolbar import com.pspdfkit.ui.toolbar.ContextualToolbar import com.pspdfkit.ui.toolbar.ToolbarCoordinatorLayout import com.pspdfkit.ui.toolbar.grouping.presets.MenuItem import com.pspdfkit.ui.toolbar.grouping.presets.PresetMenuItemGroupingRule import kotlinx.coroutines.launch class ConstructionExample(context: Context) : AssetExample( context, R.string.constructionExampleTitle, R.string.constructionExampleDescription, ) { override val assetPath: String = "Floor Plan.pdf" override fun prepareConfiguration(configuration: PdfActivityConfiguration.Builder) { super.prepareConfiguration(configuration) configuration.autosaveEnabled(false) // turn off the display of the note icon for annotations with an attached note configuration.setAnnotationNoteHintingEnabled(false) // Apply a custom theme which overrides the icon for the stamp toolbar button in the annotation creation toolbar configuration.theme(R.style.PSPDFCatalog_Theme_ConstructionExample) // Turn on measurements. This is on by default if you have it in your license. configuration.setMeasurementToolsEnabled(true) } override fun launchExample(context: Context, configuration: PdfActivityConfiguration.Builder) { prepareConfiguration(configuration) // Since Nutrient does not directly read documents from the assets, we extract them // to the internal device storage using a custom AsyncTask implementation. ExtractAssetTask.extract(assetPath, title, context) { documentFile -> // Now, as the PDF document file is sitting in the internal device storage, we can // start the ConstructionExampleActivity activity by passing it the Uri of the file. val intent = PdfActivityIntentBuilder.fromUri(context, Uri.fromFile(documentFile)).activityClass(ConstructionExampleActivity::class.java).configuration(configuration.build()).build() context.startActivity(intent) } } } class ConstructionExampleActivity : PdfActivity(), ToolbarCoordinatorLayout.OnContextualToolbarLifecycleListener, OnAnnotationSelectedListener, OnAnnotatingModeChangeListener { var annotationsHidden = false val desiredAnnotationTypes = AnnotationType.entries.toMutableSet().apply { // ignore LINK annotations remove(AnnotationType.LINK) } override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) // First we set the listener for the toolbar lifecycle changes so we // can observe when the toolbar is being prepared, shown or dismissed // inside the activity's UI. setOnContextualToolbarLifecycleListener(this) } override fun onDocumentLoaded(document: PdfDocument) { super.onDocumentLoaded(document) // Check if we have any hidden annotation. If so, we should show the "show" item in the options menu lifecycleScope.launch { val hasHiddenAnnotations = document.annotationProvider.getAllAnnotationsOfType(desiredAnnotationTypes).firstOrNull { it.hasFlag(AnnotationFlags.HIDDEN) }!= null if (hasHiddenAnnotations!= annotationsHidden) { annotationsHidden = hasHiddenAnnotations invalidateOptionsMenu() } } setupPinStamp() } /** * Create a custom configuration for Stamp annotations which creates a Pin annotation. * This can be achieved by setting a single StampPickerItem (which visualizes a pin in our case) to the configuration, * which leads to a behavior change in the annotation creation. Instead of showing a stamp picker dialog, the stamp * annotation is created immediatly from this only item. */ private fun setupPinStamp() { val fragment = requirePdfFragment() val pinBitmap = AppCompatResources.getDrawable(this, R.drawable.ic_pin_drop)?.toBitmap()?: return // First we create our custom StampPickerItem val pinStamp = StampPickerItem.fromBitmap(pinBitmap).withSize(50f, 50f).build() // Then put it into a StampAnnotationConfiguration val stampConfig = StampAnnotationConfiguration.builder(this) // Here we return list of stamp picker items that are going to be available in the stamp picker..setAvailableStampPickerItems(listOf(pinStamp)).build() // Replace the default StampAnnotationConfiguration with our custom one fragment.annotationConfiguration.put(AnnotationType.STAMP, stampConfig) // When creating such a pin stamp we always want to add a note to it. // To spare the user the extra click for adding a note, we invoke the NoteEditor automatically // Therefore we need two listeners which inform us when an annotation is created and when // the editing mode is invoked (both events happen right one after the other) fragment.addOnAnnotationSelectedListener(this) fragment.addOnAnnotatingModeChangeListener(this) } override fun onGenerateMenuItemIds(menuItems: MutableList): MutableList { // Generate our custom menu item ids. menuItems.add(0, R.id.custom_action_hide) menuItems.add(1, R.id.custom_action_show) menuItems.removeAt(menuItems.indexOf(MENU_OPTION_THUMBNAIL_GRID)) return menuItems } // add show/hide annotation items to options menu override fun onCreateOptionsMenu(menu: Menu): Boolean { super.onCreateOptionsMenu(menu) // Let's say we want to tint icons same as the default ones. We can read the color // from the theme, or specify the same color we have in theme. Reading from theme is a bit // more complex but a better way to do it, so here's how to: val a = theme.obtainStyledAttributes( null, com.pspdfkit.R.styleable.pspdf__ActionBarIcons, com.pspdfkit.R.attr.pspdf__actionBarIconsStyle, com.pspdfkit.R.style.PSPDFKit_ActionBarIcons, ) val mainToolbarIconsColor = a.getColor( com.pspdfkit.R.styleable.pspdf__ActionBarIcons_pspdf__iconsColor, ContextCompat.getColor(this, com.pspdfkit.R.color.pspdf__onPrimary), ) a.recycle() // setup our custom menu items for showing and hiding annotations setupCustomMenuItem( menu.findItem(R.id.custom_action_hide), "Hide", R.drawable.ic_hide, mainToolbarIconsColor, ) setupCustomMenuItem( menu.findItem(R.id.custom_action_show), "Show", R.drawable.ic_show, mainToolbarIconsColor, ) return true } private fun setupCustomMenuItem(item: android.view.MenuItem?, title: String, iconRes: Int, mainToolbarIconsColor: Int) { if (item == null) return item.title = title item.setIcon(iconRes) item.icon?.let { DrawableCompat.setTint(it, mainToolbarIconsColor) } item.setShowAsAction(android.view.MenuItem.SHOW_AS_ACTION_IF_ROOM) } override fun onPrepareOptionsMenu(menu: Menu): Boolean { val result = super.onPrepareOptionsMenu(menu) // we only want to show either of our custom menu items, depending on the visible/hidden state of our annotations menu.findItem(R.id.custom_action_hide)?.let { it.isVisible =!annotationsHidden } menu.findItem(R.id.custom_action_show)?.let { it.isVisible = annotationsHidden } return result } override fun onOptionsItemSelected(item: android.view.MenuItem): Boolean { when (item.itemId) { R.id.custom_action_hide, R.id.custom_action_show, -> { // show/hide annotations accordingly and update the option menu annotationsHidden =!annotationsHidden setAnnotationVisibility(annotationsHidden) invalidateOptionsMenu() return true } else -> { return super.onOptionsItemSelected(item) } } } // add or remove the HIDDEN flag to the annotations to achieve the hide/show effect private fun setAnnotationVisibility(shouldHide: Boolean) { val doc = document?: return lifecycleScope.launch { val annotations = doc.annotationProvider.getAllAnnotationsOfType(desiredAnnotationTypes) pdfFragment?.executeAction(HideAction(annotations, null, shouldHide)) } } //region OnContextualToolbarLifecycleListener override fun onPrepareContextualToolbar(toolbar: ContextualToolbar<*>) { if (toolbar is AnnotationToolbar) { // Register grouping rule to tell toolbar how to group menu items. toolbar.setMenuItemGroupingRule( CustomAnnotationCreationToolbarGroupingRule(this), ) } } override fun onDisplayContextualToolbar(toolbar: ContextualToolbar<*>) {} override fun onRemoveContextualToolbar(toolbar: ContextualToolbar<*>) {} //endregion private var newPinAnnotationCreated = false //region OnAnnotationSelectedListener override fun onPrepareAnnotationSelection( controller: AnnotationSelectionController, annotation: Annotation, annotationCreated: Boolean, ): Boolean { // since our custom pin is the only stamp that we create in this example we can just use the type for detection newPinAnnotationCreated = annotationCreated && annotation.type == AnnotationType.STAMP return true } override fun onAnnotationSelected(annotation: Annotation, annotationCreated: Boolean) {} //endregion //region OnAnnotatingModeChangeListener override fun onEnterAnnotatingMode(controller: AnnotatingController) { // in case the last annotation selection was in context with a pin creation, invoke the note editor if (newPinAnnotationCreated && controller.hasCurrentlySelectedAnnotations()) { controller.currentSingleSelectedAnnotation?.let { controller.showAnnotationEditor(it) } } } override fun onChangeAnnotatingMode(controller: AnnotatingController) {} override fun onExitAnnotatingMode(controller: AnnotatingController) {} //endregion /** * Class that implements the [PresetMenuItemGroupingRule], used to tell the toolbar how to * group menu items in the toolbar. * * @see com.pspdfkit.catalog.ui.CustomAnnotationCreationToolbarGroupingRule for more details. */ private class CustomAnnotationCreationToolbarGroupingRule constructor(context: Context) : PresetMenuItemGroupingRule(context) { companion object { private const val LOW_CAPACITY_ITEMS_COUNT = 5 private const val HIGH_CAPACITY_ITEMS_COUNT = 7 } private val lowCapacityItemsGrouping: MutableList = ArrayList(LOW_CAPACITY_ITEMS_COUNT) private val highCapacityItemsGrouping: MutableList = ArrayList(HIGH_CAPACITY_ITEMS_COUNT) override fun getGroupPreset(capacity: Int, itemsCount: Int): List = when { capacity >= HIGH_CAPACITY_ITEMS_COUNT -> highCapacityItemsGrouping capacity >= LOW_CAPACITY_ITEMS_COUNT -> lowCapacityItemsGrouping // in case we don't have enough capacity, return an empty list else -> ArrayList(capacity) } override fun areGeneratedGroupItemsSelectable(): Boolean = true init { lowCapacityItemsGrouping.addAll( listOf( MenuItem( com.pspdfkit.R.id.pspdf__annotation_toolbar_group_drawing, intArrayOf( com.pspdfkit.R.id.pspdf__annotation_toolbar_item_line, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_line_arrow, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_ink_pen, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_magic_ink, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_freetext, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_freetext_callout, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_note, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_measurement_distance, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_measurement_perimeter, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_measurement_area_polygon, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_measurement_area_rect, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_measurement_area_ellipse, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_measurement_scale_calibration, ), ), MenuItem( com.pspdfkit.R.id.pspdf__annotation_toolbar_group_markup, intArrayOf( com.pspdfkit.R.id.pspdf__annotation_toolbar_item_cloudy_square, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_cloudy_circle, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_dashed_square, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_dashed_circle, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_square, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_circle, ), ), MenuItem(com.pspdfkit.R.id.pspdf__annotation_toolbar_item_image), MenuItem(com.pspdfkit.R.id.pspdf__annotation_toolbar_item_stamp), MenuItem(com.pspdfkit.R.id.pspdf__annotation_toolbar_item_picker), MenuItem( com.pspdfkit.R.id.pspdf__annotation_toolbar_group_undo_redo, intArrayOf( com.pspdfkit.R.id.pspdf__annotation_toolbar_item_undo, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_redo, ), ), ), ) highCapacityItemsGrouping.addAll( listOf( MenuItem( com.pspdfkit.R.id.pspdf__annotation_toolbar_group_measurement, intArrayOf( com.pspdfkit.R.id.pspdf__annotation_toolbar_item_measurement_distance, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_measurement_perimeter, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_measurement_area_polygon, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_measurement_area_rect, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_measurement_area_ellipse, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_measurement_scale_calibration, ), ), MenuItem( com.pspdfkit.R.id.pspdf__annotation_toolbar_group_drawing, intArrayOf( com.pspdfkit.R.id.pspdf__annotation_toolbar_item_line, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_line_arrow, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_ink_pen, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_magic_ink, ), ), MenuItem( com.pspdfkit.R.id.pspdf__annotation_toolbar_group_markup, intArrayOf( com.pspdfkit.R.id.pspdf__annotation_toolbar_item_cloudy_square, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_cloudy_circle, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_dashed_square, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_dashed_circle, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_square, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_circle, ), ), MenuItem( com.pspdfkit.R.id.pspdf__annotation_toolbar_group_writing, intArrayOf( com.pspdfkit.R.id.pspdf__annotation_toolbar_item_freetext, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_freetext_callout, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_note, ), ), MenuItem(com.pspdfkit.R.id.pspdf__annotation_toolbar_item_image), MenuItem(com.pspdfkit.R.id.pspdf__annotation_toolbar_item_stamp), MenuItem(com.pspdfkit.R.id.pspdf__annotation_toolbar_item_picker), MenuItem( com.pspdfkit.R.id.pspdf__annotation_toolbar_group_undo_redo, intArrayOf( com.pspdfkit.R.id.pspdf__annotation_toolbar_item_undo, com.pspdfkit.R.id.pspdf__annotation_toolbar_item_redo, ), ), ), ) } } } ``` 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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