--- title: "Custom Activity Form Editing" canonical_url: "https://www.nutrient.io/guides/android/samples/custom-activity-form-editing-java/" md_url: "https://www.nutrient.io/guides/android/samples/custom-activity-form-editing-java.md" last_updated: "2026-05-15T19:10:04.916Z" description: "Add form editing UI to a custom activity built around PdfFragment." --- # Custom Activity Form Editing Add form editing UI to a custom activity built around PdfFragment. [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 © 2018-2026 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.tasks.ExtractAssetTask.extract; import android.content.Context; import android.content.Intent; import android.net.Uri; import android.os.Bundle; import androidx.annotation.NonNull; import androidx.annotation.Nullable; import androidx.appcompat.app.AppCompatActivity; import com.pspdfkit.catalog.R; import com.pspdfkit.catalog.SdkExample; import com.pspdfkit.configuration.PdfConfiguration; import com.pspdfkit.configuration.activity.PdfActivityConfiguration; import com.pspdfkit.forms.ComboBoxFormElement; import com.pspdfkit.forms.ListBoxFormElement; import com.pspdfkit.ui.PdfFragment; import com.pspdfkit.ui.forms.FormEditingBar; import com.pspdfkit.ui.inspector.PropertyInspectorCoordinatorLayout; import com.pspdfkit.ui.inspector.forms.FormEditingInspectorController; import com.pspdfkit.ui.special_mode.controller.FormEditingController; import com.pspdfkit.ui.special_mode.manager.FormManager; /** * This example shows how to use form editing UI with custom activity that uses {@link PdfFragment}. */ public class FormEditingInFragmentExample extends SdkExample { public FormEditingInFragmentExample(@NonNull Context context) { super(context, R.string.formEditingInFragmentExampleTitle, R.string.formEditingInFragmentExampleDescription); } @Override public void launchExample( @NonNull final Context context, @NonNull final PdfActivityConfiguration.Builder configuration) { extract("Form-fields.pdf", getTitle(), context, documentFile -> { final Intent intent = new Intent(context, FormEditingInFragmentActivity.class); intent.putExtra(FormEditingInFragmentActivity.EXTRA_URI, Uri.fromFile(documentFile)); intent.putExtra( FormEditingInFragmentActivity.EXTRA_CONFIGURATION, configuration.build().getConfiguration()); context.startActivity(intent); }); } /** * This example shows how to incorporate form editing UI into the custom activity using {@link * PdfFragment}. This includes 2 UI components: * * */ public static class FormEditingInFragmentActivity extends AppCompatActivity implements FormManager.OnFormElementEditingModeChangeListener { public static final String EXTRA_URI = "FormEditingInFragmentActivity.DocumentUri"; public static final String EXTRA_CONFIGURATION = "FormEditingInFragmentActivity.PdfConfiguration"; /** Fragment that displays the PDF document. */ private PdfFragment fragment; /** * Coordinator for property inspectors displayed in bottom sheet. Needs to be part of the * activity layout. */ private PropertyInspectorCoordinatorLayout inspectorCoordinatorLayout; /** * Controller managing lifecycle of form editing inspector while form editing mode is active. */ private FormEditingInspectorController formEditingInspectorController; /** * Auxiliary view that provides buttons for navigating between form fields in tab order, * clearing form field and finishing form editing. */ private FormEditingBar formEditingBar; @Override protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_form_editing_fragment); setSupportActionBar(null); // Use this if you want to use form inspector when editing form fields. inspectorCoordinatorLayout = findViewById(R.id.inspectorCoordinatorLayout); formEditingInspectorController = new FormEditingInspectorController(this, inspectorCoordinatorLayout); // Use this if you want to use form editing bar at the bottom of the screen. formEditingBar = findViewById(R.id.formEditingBar); // The actual document Uri is provided with the launching intent. // 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) { finish(); return; } // PdfFragment configuration is provided with the launching intent. PdfConfiguration configuration = getIntent().getParcelableExtra(EXTRA_CONFIGURATION); if (configuration == null) { configuration = new PdfConfiguration.Builder().build(); } // Initialize PdfFragment now initPdfFragment(uri, configuration); } private void initPdfFragment(@NonNull Uri uri, @NonNull PdfConfiguration configuration) { // Initialize PdfFragment. fragment = (PdfFragment) getSupportFragmentManager().findFragmentById(R.id.fragmentContainer); if (fragment == null) { fragment = PdfFragment.newInstance(uri, configuration); getSupportFragmentManager().beginTransaction().add(R.id.fragmentContainer, fragment).commit(); } // Register listener for form element editing mode changes. We'll use this to bind our form // editing UI to form editing controller. fragment.addOnFormElementEditingModeChangeListener(this); } @Override protected void onDestroy() { super.onDestroy(); fragment.removeOnFormElementEditingModeChangeListener(this); } @Override public void onEnterFormElementEditingMode(@NonNull FormEditingController controller) { // When entering the form editing mode we need to bind required UI components to provided // form editing controller. // These will animate form inspector and form editing bar into view if necessary. formEditingInspectorController.bindFormEditingController(controller); formEditingBar.bindController(controller); } @Override public void onChangeFormElementEditingMode(@NonNull FormEditingController controller) { // Nothing to be done here, bound form editing bar and form editing inspector controller // will pick up the changes. } @Override public void onExitFormElementEditingMode(@NonNull FormEditingController controller) { // Once we're done with form editing, unbind the editing controller // from the UI, this will animate form editing bar and inspector from view. formEditingInspectorController.unbindFormEditingController(); formEditingBar.unbindController(); } } } ``` This code sample is an example that illustrates how to use our SDK. 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