@Override
  public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    ActionBar actionBar = getSupportActionBar();
    if (actionBar != null) {
      actionBar.setHomeButtonEnabled(true);
      actionBar.setDisplayHomeAsUpEnabled(true);
    }

    FragmentManager fragmentManager = getFragmentManager();
    mAppSettingsFragment =
        (AppSettingsFragment) fragmentManager.findFragmentByTag(KEY_APP_SETTINGS_FRAGMENT);
    mPasscodePreferenceFragment =
        (PasscodePreferenceFragment) fragmentManager.findFragmentByTag(KEY_PASSCODE_FRAGMENT);
    if (mAppSettingsFragment == null || mPasscodePreferenceFragment == null) {
      Bundle passcodeArgs = new Bundle();
      passcodeArgs.putBoolean(PasscodePreferenceFragment.KEY_SHOULD_INFLATE, false);
      mAppSettingsFragment = new AppSettingsFragment();
      mPasscodePreferenceFragment = new PasscodePreferenceFragment();
      mPasscodePreferenceFragment.setArguments(passcodeArgs);

      fragmentManager
          .beginTransaction()
          .replace(android.R.id.content, mPasscodePreferenceFragment, KEY_PASSCODE_FRAGMENT)
          .add(android.R.id.content, mAppSettingsFragment, KEY_APP_SETTINGS_FRAGMENT)
          .commit();
    }
  }
  @Override
  public void onStart() {
    super.onStart();

    Preference togglePref =
        mAppSettingsFragment.findPreference(
            getString(org.wordpress.passcodelock.R.string.pref_key_passcode_toggle));
    Preference changePref =
        mAppSettingsFragment.findPreference(
            getString(org.wordpress.passcodelock.R.string.pref_key_change_passcode));

    if (togglePref != null && changePref != null) {
      mPasscodePreferenceFragment.setPreferences(togglePref, changePref);
      ((SwitchPreference) togglePref)
          .setChecked(AppLockManager.getInstance().getAppLock().isPasswordLocked());
    }
  }