Add annotations to images in Kotlin for Android

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/*
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 *   Copyright © 2020-2025 PSPDFKit GmbH. All rights reserved.
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 *
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 *   The PSPDFKit Sample applications are licensed with a modified BSD license.
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 *   Please see License for details. This notice may not be removed from this file.
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 */
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package com.pspdfkit.catalog.examples.kotlin
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import android.content.Context
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import android.net.Uri
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import com.pspdfkit.catalog.R
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import com.pspdfkit.catalog.tasks.ExtractAssetTask
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import com.pspdfkit.configuration.activity.PdfActivityConfiguration
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import com.pspdfkit.document.ImageDocumentLoader
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import com.pspdfkit.ui.PdfActivity
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/**
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 * This example shows how to open a demo image document from the assets folder.
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 */
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class ImageDocumentExample(context: Context) : AssetExample(context, R.string.imageDocumentExampleTitle, R.string.imageDocumentExampleDescription) {
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    override val assetPath: String
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        get() = "images/android.png"
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    override fun launchExample(
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        context: Context,
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        configuration: PdfActivityConfiguration.Builder
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    ) {
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        // We start off with the filename (or path) of an image document inside the app's assets.
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        val assetPath = assetPath
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        // Get the default image document configuration.
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        // Default options in this configuration are specifically thought to
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        // enhance the user experience for image documents (e.g. thumbnail bar and
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        // page number overlay are hidden).
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        val imageDocumentConfiguration = ImageDocumentLoader.getDefaultImageDocumentActivityConfiguration(configuration.build())
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        // Since Nutrient does not directly read documents from the assets, we extract them
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        // to the internal device storage using a custom AsyncTask implementation.
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        ExtractAssetTask.extract(assetPath, title, context) { documentFile ->
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            // Now, as the image document file is sitting in the internal device storage, we can
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            // start the PdfActivity activity by passing it the Uri of the file.
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            PdfActivity.showImage(
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                context,
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                Uri.fromFile(documentFile),
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                imageDocumentConfiguration
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            )
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        }
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    }
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}