@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(); } }