SettingsActivity.java

Enable keyboard shortcuts

/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

package org.mozilla.geckoview_example;

import android.os.Bundle;

import androidx.appcompat.app.AppCompatActivity;

import androidx.appcompat.widget.Toolbar;

import androidx.preference.PreferenceFragmentCompat;

public class SettingsActivity extends AppCompatActivity {

  @Override

  protected void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_settings);

    getSupportFragmentManager()

        .beginTransaction()

        .replace(R.id.container, new SettingsFragment())

        .commit();

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);

    setSupportActionBar(toolbar);

    // add back arrow to toolbar

    if (getSupportActionBar() != null) {

      getSupportActionBar().setDisplayHomeAsUpEnabled(true);

      getSupportActionBar().setDisplayShowHomeEnabled(true);

  @Override

  public boolean onSupportNavigateUp() {

    onBackPressed();

    return true;

  public static class SettingsFragment extends PreferenceFragmentCompat {

    @Override

    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {

      setPreferencesFromResource(R.xml.settings, rootKey);