--- title: "Custom Search UI (Views)" canonical_url: "https://www.nutrient.io/guides/android/samples/custom-search-ui-views-java/" md_url: "https://www.nutrient.io/guides/android/samples/custom-search-ui-views-java.md" last_updated: "2026-05-15T19:10:04.916Z" description: "Build a fully custom View-based search UI on top of the search APIs." --- # Custom Search UI (Views) Build a fully custom View-based search UI on top of the search APIs. [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/) --- ```java /* * Copyright © 2016-2026 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.java; import static com.pspdfkit.catalog.SdkExample.TAG; import static com.pspdfkit.catalog.tasks.ExtractAssetTask.extract; import android.animation.Animator; import android.animation.AnimatorListenerAdapter; import android.annotation.SuppressLint; import android.content.Context; import android.content.Intent; import android.graphics.Color; import android.graphics.Point; import android.graphics.Typeface; import android.graphics.drawable.Drawable; import android.net.Uri; import android.os.Bundle; import android.text.Html; import android.text.SpannableString; import android.text.Spanned; import android.text.style.BackgroundColorSpan; import android.text.style.StyleSpan; import android.util.Log; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.view.ViewAnimationUtils; import android.view.ViewGroup; import android.view.animation.AccelerateInterpolator; import android.widget.AbsListView; import android.widget.AdapterView; import android.widget.BaseAdapter; import android.widget.Button; import android.widget.ImageView; import android.widget.ListView; import android.widget.TextView; import androidx.annotation.IntRange; import androidx.annotation.NonNull; import androidx.annotation.Nullable; import androidx.annotation.UiThread; import androidx.appcompat.app.AlertDialog; import androidx.appcompat.app.AppCompatActivity; import androidx.appcompat.widget.SearchView; import androidx.appcompat.widget.Toolbar; import androidx.core.graphics.drawable.DrawableCompat; import com.pspdfkit.catalog.R; import com.pspdfkit.catalog.SdkExample; import com.pspdfkit.catalog.utils.OnScrollListenerAdapter; import com.pspdfkit.catalog.utils.Utils; import com.pspdfkit.configuration.PdfConfiguration; import com.pspdfkit.configuration.activity.PdfActivityConfiguration; import com.pspdfkit.document.PdfDocument; import com.pspdfkit.document.search.SearchOptions; import com.pspdfkit.document.search.SearchResult; import com.pspdfkit.document.search.TextSearch; import com.pspdfkit.listeners.DocumentListener; import com.pspdfkit.ui.PdfFragment; import com.pspdfkit.ui.search.PdfSearchViewInline; import com.pspdfkit.ui.search.SearchResultHighlighter; import com.pspdfkit.utils.Size; import io.reactivex.rxjava3.android.schedulers.AndroidSchedulers; import io.reactivex.rxjava3.core.Flowable; import io.reactivex.rxjava3.core.Observable; import io.reactivex.rxjava3.core.ObservableSource; import io.reactivex.rxjava3.disposables.Disposable; import io.reactivex.rxjava3.functions.Supplier; import io.reactivex.rxjava3.schedulers.Schedulers; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Locale; import java.util.Map; /** * This example takes the {@link PdfSearchViewInline} and places it inside a custom layout. To do so * it uses a custom activity {@link CustomSearchUiActivity} which will manage creation of the new * layout as well as showing and hiding of the inline search. */ public class CustomSearchUiExample extends SdkExample { public CustomSearchUiExample(@NonNull final Context context) { super(context, R.string.customSearchUiExampleTitle, R.string.customSearchUiExampleDescription); } @Override public void launchExample( @NonNull final Context context, @NonNull final PdfActivityConfiguration.Builder configuration) { // Load the example document from the assets and launch the activity. extract(WELCOME_DOC, getTitle(), context, documentFile -> { final Intent intent = new Intent(context, CustomSearchUiActivity.class); intent.putExtra(CustomSearchUiActivity.EXTRA_URI, Uri.fromFile(documentFile)); context.startActivity(intent); }); } /** * This activity is a completely custom activity, using the {@link PdfFragment} for displaying a * document. Furthermore, it uses the support {@link SearchView} to ask the user for a search term, * and the {@link TextSearch} to search the loaded document for results. Finally, the {@link * SearchResultHighlighter} is used to draw the results on top of the pages. */ public static class CustomSearchUiActivity extends AppCompatActivity implements AdapterView.OnItemClickListener { public static final String EXTRA_URI = "CustomSearchUiExample.DocumentUri"; private static final PdfConfiguration config = new PdfConfiguration.Builder().build(); private PdfFragment fragment; private PdfDocument document; @Nullable private TextSearch textSearch; @Nullable private Disposable currentSearch; private SearchResultHighlighter highlighter; private SearchResultAdapter adapter; private List currentSearchResults; private int selectedSearchResult; private View listViewContainer; private View searchResultNavigationContainer; private TextView currentSearchResultTextView; private Button nextResultButton; private Button previousResultButton; private MenuItem searchAction; private SearchOptions searchOptions; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_custom_search_ui); // The actual document Uri is provided with the launching intent. You can simply change that // inside the CustomSearchUiExample class. // This is a check that the example is not accidentally launched without a document Uri. final Uri uri = getIntent().getParcelableExtra(EXTRA_URI); if (uri == null) { showCouldNotStartExample("No document Uri was provided with the launching intent."); return; } // Extract all views from the root layout. final Toolbar toolbar = findViewById(R.id.toolbar); listViewContainer = findViewById(R.id.searchResultsListContainer); final ListView listView = findViewById(R.id.searchResultsListView); searchResultNavigationContainer = findViewById(R.id.searchResultNavigationContainer); currentSearchResultTextView = findViewById(R.id.currentSearchResultTextView); nextResultButton = findViewById(R.id.nextSearchResultButton); previousResultButton = findViewById(R.id.previousSearchResultButton); if (toolbar == null || listView == null || nextResultButton == null || previousResultButton == null) { showCouldNotStartExample("Some of the required views were not inflated."); return; } setSupportActionBar(toolbar); nextResultButton.setOnClickListener(v -> selectSearchResultAtIndex(selectedSearchResult + 1)); previousResultButton.setOnClickListener(v -> selectSearchResultAtIndex(selectedSearchResult - 1)); // Extract the existing fragment from the layout, or create a new fragment instance if none // has been attached yet. fragment = (PdfFragment) getSupportFragmentManager().findFragmentById(R.id.fragmentContainer); if (fragment == null) { fragment = PdfFragment.newInstance(uri, config); getSupportFragmentManager().beginTransaction().add(R.id.fragmentContainer, fragment).commit(); } // Register a listener to retrieve the document as soon as it was loaded, or show an dialog // if an error occurred. fragment.addDocumentListener(new DocumentListener() { @UiThread @Override public void onDocumentLoaded(@NonNull PdfDocument loadedDocument) { document = loadedDocument; textSearch = new TextSearch(loadedDocument, config); prepareSearchSplash(findViewById(R.id.empty)); } @Override public void onDocumentLoadFailed(@NonNull Throwable exception) { Log.e(TAG, "Error while loading the document.", exception); showCouldNotStartExample( "An exception was thrown while loading the document. See logcat for details."); } }); // To show search results on top of the document, a highlighter is used. This class is a // PdfDrawableProvider // and is registered as such on the fragment. We will set search results on the highlighter, // once available. highlighter = new SearchResultHighlighter(this); fragment.addDrawableProvider(highlighter); // Prepare the ListView and SearchResultAdapter which is used to display search results. To // make better use of // the available screen estate, collapse the soft-keyboard as soon as the user scrolls the // list. adapter = new SearchResultAdapter(this); listView.setAdapter(adapter); listView.setOnItemClickListener(this); listView.setOnScrollListener(new OnScrollListenerAdapter() { @Override public void onScrollStateChanged(AbsListView view, int scrollState) { if (scrollState!= SCROLL_STATE_IDLE) { hideSoftKeyboard(); } } }); searchOptions = new SearchOptions.Builder().snippetLength(40).build(); } private void showCouldNotStartExample(String message) { new AlertDialog.Builder(this).setTitle("Could not start example.").setMessage(message).setNegativeButton("Leave example", (dialog, which) -> dialog.dismiss()).setOnDismissListener(dialog -> finish()).show(); } @Override public boolean onCreateOptionsMenu(Menu menu) { super.onCreateOptionsMenu(menu); // Inflate the action bar menu that will add a search action. getMenuInflater().inflate(R.menu.activity_custom_search_view, menu); searchAction = menu.findItem(R.id.search); final Drawable searchIcon = DrawableCompat.wrap(searchAction.getIcon()); DrawableCompat.setTint(searchIcon, Color.WHITE); searchAction.setIcon(searchIcon); final SearchView searchView = (SearchView) searchAction.getActionView(); searchView.setIconifiedByDefault(false); searchView.requestFocus(); searchView.setQueryHint("Search PDF document..."); searchAction.setOnActionExpandListener(new MenuItem.OnActionExpandListener() { @Override public boolean onMenuItemActionExpand(MenuItem item) { return true; } @Override public boolean onMenuItemActionCollapse(MenuItem item) { clearCurrentSearchResults(); hideSearchResultsList(); hideSoftKeyboard(); return true; } }); searchView.setOnQueryTextFocusChangeListener((v, hasFocus) -> { if (hasFocus) { showSearchResultList(); } }); searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() { @Override public boolean onQueryTextSubmit(String query) { return false; } @Override public boolean onQueryTextChange(String newText) { if (newText.length() > 2 && textSearch!= null) { if (currentSearch!= null) { currentSearch.dispose(); } currentSearch = textSearch.performSearchAsync(newText, searchOptions).onErrorResumeNext(throwable -> Flowable.empty()).toList().observeOn(AndroidSchedulers.mainThread()).subscribe(searchResults -> { adapter.setSearchResults(searchResults); final View emptyView = findViewById(R.id.empty); if (emptyView!= null && emptyView.getVisibility()!= View.INVISIBLE) { emptyView.setAlpha(1); emptyView.animate().alpha(0).setListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { emptyView.animate().setListener(null); emptyView.setVisibility(View.INVISIBLE); } }).start(); } }); } else { final View emptyView = findViewById(R.id.empty); if (emptyView!= null && emptyView.getVisibility()!= View.VISIBLE) { emptyView.setAlpha(0); emptyView.setVisibility(View.VISIBLE); emptyView.animate().alpha(1).setListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { emptyView.animate().setListener(null); adapter.setSearchResults(null); } }).start(); } } return true; } }); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { boolean handled = false; if (item.getItemId() == R.id.search) { item.expandActionView(); showSearchResultList(); handled = true; } return handled || super.onOptionsItemSelected(item); } /** Called when the user selects a page from the search results list. */ @Override public void onItemClick(AdapterView parent, View view, int position, long id) { hideSoftKeyboard(); //noinspection unchecked currentSearchResults = (List) parent.getAdapter().getItem(position); selectedSearchResult = 0; updateSearchResultNavigationBar(); highlighter.setSearchResults(currentSearchResults); highlighter.setSelectedSearchResult(currentSearchResults.get(0)); fragment.setPageIndex(currentSearchResults.get(0).pageIndex, false); hideSearchResultsList(); searchResultNavigationContainer.setVisibility(View.VISIBLE); final View contentView = findViewById(android.R.id.content); assert contentView!= null; contentView.requestFocus(); } private void hideSoftKeyboard() { final View focusedView = getCurrentFocus(); if (focusedView!= null) { Utils.hideKeyboard(focusedView); } } /** Create some fancy looking document statistics as part of the search list's empty view. */ @SuppressLint("CheckResult") private void prepareSearchSplash(@Nullable final TextView splashTextView) { if (splashTextView == null) return; Observable.defer((Supplier>) () -> { final int pageCount = document.getPageCount(); int wordCount = 0; for (int i = 0; i < pageCount; i++) { final String pageText = document.getPageText(i); wordCount += pageText.split("\\w").length; } return Observable.just(getString(R.string.custom_search_ui_splash, pageCount, wordCount)); }).subscribeOn(Schedulers.computation()).observeOn(AndroidSchedulers.mainThread()).subscribe(s -> { Spanned result = Html.fromHtml(s, 0); splashTextView.setText(result); }); } /** Marks the search result at {@code searchResultIndex} as selected. */ private void selectSearchResultAtIndex(@IntRange(from = 0) final int searchResultIndex) { if (searchResultIndex < 0 || searchResultIndex >= currentSearchResults.size()) { return; } if (selectedSearchResult!= searchResultIndex) { selectedSearchResult = searchResultIndex; updateSearchResultNavigationBar(); highlighter.setSelectedSearchResult(currentSearchResults.get(selectedSearchResult)); } final SearchResult result = currentSearchResults.get(selectedSearchResult); if (fragment.getPageIndex()!= result.pageIndex) { fragment.setPageIndex(result.pageIndex); } } /** Update buttons and text of the on-page search result navigation. */ private void updateSearchResultNavigationBar() { currentSearchResultTextView.setText(getString( R.string.currently_selected_result, selectedSearchResult + 1, currentSearchResults.size())); previousResultButton.setEnabled(selectedSearchResult > 0); nextResultButton.setEnabled(selectedSearchResult < currentSearchResults.size() - 1); } /** Clear all search results both visually as well as all data. */ private void clearCurrentSearchResults() { highlighter.clearSearchResults(); if (searchResultNavigationContainer.getVisibility()!= View.INVISIBLE) { searchResultNavigationContainer.animate().translationY(-searchResultNavigationContainer.getHeight()).setInterpolator(new AccelerateInterpolator(1.5f)).setListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(final Animator animation) { searchResultNavigationContainer.animate().setListener(null); searchResultNavigationContainer.setTranslationY(0); searchResultNavigationContainer.setVisibility(View.INVISIBLE); } }).start(); } } private void showSearchResultList() { if (listViewContainer.getVisibility()!= View.VISIBLE) { searchAction.setEnabled(false); listViewContainer.setVisibility(View.VISIBLE); createRevealAnimation(true).start(); } } private void hideSearchResultsList() { if (listViewContainer.getVisibility()!= View.INVISIBLE) { final Animator hideAnimator = createRevealAnimation(false); hideAnimator.addListener(new AnimatorListenerAdapter() { @Override public void onAnimationEnd(Animator animation) { animation.removeListener(this); listViewContainer.setVisibility(View.INVISIBLE); searchAction.setEnabled(true); } }); hideAnimator.start(); } } private Animator createRevealAnimation(boolean showReveal) { final Point screenSize = new Point(); getWindowManager().getDefaultDisplay().getSize(screenSize); final float screenDiameter = (float) Math.sqrt(screenSize.x * screenSize.x + screenSize.y * screenSize.y); final float startRadius, endRadius; if (showReveal) { startRadius = 0; endRadius = screenDiameter; } else { startRadius = screenDiameter; endRadius = 0; } // Reveal is centered right below the action bar. return ViewAnimationUtils.createCircularReveal( listViewContainer, screenSize.x / 2, 0, startRadius, endRadius); } private static class ViewHolder { @NonNull public static ViewHolder get(View view, ViewGroup parent) { ViewHolder holder; if (view!= null) { holder = (ViewHolder) view.getTag(); } else { view = LayoutInflater.from(parent.getContext()).inflate(R.layout.activity_custom_search_ui_item, parent, false); holder = new ViewHolder(view); view.setTag(holder); } return holder; } public final View view; public final ImageView pagePreviewImageView; public final TextView searchResultsCountView; public final TextView pageNumberTextView; public final TextView previewTextView; public Disposable previewRenderSubscription; private ViewHolder(View view) { this.view = view; pagePreviewImageView = view.findViewById(R.id.pagePreviewImageView); searchResultsCountView = view.findViewById(R.id.searchResultsCountView); pageNumberTextView = view.findViewById(R.id.pageNumberTextView); previewTextView = view.findViewById(R.id.previewTextView); } } /** * List view adapter for presenting search results, grouped by page (that is one list item per * page with results). */ private class SearchResultAdapter extends BaseAdapter { private final int previewImageWidth; /** List of all search results, grouped by page. */ @Nullable private List> searchResults; private SearchResultAdapter(@NonNull final Context context) { previewImageWidth = context.getResources().getDimensionPixelSize(R.dimen.custom_search_ui_previewimage_width); } public void setSearchResults(@Nullable final List searchResults) { if (searchResults == null) { this.searchResults = null; } else { // Group all search results by page. final Map> groupedSearchResults = new HashMap<>(); for (SearchResult result : searchResults) { if (groupedSearchResults.get(result.pageIndex) == null) { groupedSearchResults.put(result.pageIndex, new ArrayList<>()); } groupedSearchResults.get(result.pageIndex).add(result); } // Store the groups inside a list, to make them accessible using adapter position. this.searchResults = new ArrayList<>(); for (List resultsOnPage : groupedSearchResults.values()) { this.searchResults.add(resultsOnPage); } } notifyDataSetChanged(); } @Override public int getCount() { return searchResults == null? 0 : searchResults.size(); } @Override public List getItem(int position) { return searchResults == null? null : searchResults.get(position); } @Override public long getItemId(int position) { return position; } @Override public View getView(int position, View convertView, ViewGroup parent) { final ViewHolder holder = ViewHolder.get(convertView, parent); final List item = getItem(position); final SearchResult displayedResult = item.get(0); final int resultsCount = item.size(); assert displayedResult.snippet!= null; if (holder.previewRenderSubscription!= null) { holder.previewRenderSubscription.dispose(); } // Calculate the size of the rendered preview image. final int width = previewImageWidth; final int height = calculateBitmapHeight(width, displayedResult.pageIndex); holder.previewRenderSubscription = document.renderPageToBitmapAsync( parent.getContext(), displayedResult.pageIndex, width, height).observeOn(AndroidSchedulers.mainThread()).subscribe(holder.pagePreviewImageView::setImageBitmap); holder.pageNumberTextView.setText( String.format(Locale.getDefault(), "Page %d", displayedResult.pageIndex + 1)); holder.searchResultsCountView.setText( getResources().getQuantityString(R.plurals.search_results, resultsCount, resultsCount)); // Highlight the actual search results phrase. final SpannableString previewText = new SpannableString(displayedResult.snippet.text); previewText.setSpan( new StyleSpan(Typeface.BOLD), displayedResult.snippet.rangeInSnippet.getStartPosition(), displayedResult.snippet.rangeInSnippet.getEndPosition(), 0); previewText.setSpan( new BackgroundColorSpan(Color.YELLOW), displayedResult.snippet.rangeInSnippet.getStartPosition(), displayedResult.snippet.rangeInSnippet.getEndPosition(), 0); holder.previewTextView.setText(previewText); return holder.view; } private int calculateBitmapHeight(final int width, @IntRange(from = 0) final int pageIndex) { final Size size = document.getPageSize(pageIndex); return (int) (size.height * (width / size.width)); } } } } ``` 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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