How to use

addToBackStack

method

in

android.app.FragmentTransaction

@Override
public void wordClicked() {
 if (stuff == null) {
  stuff=new StuffFragment();
 }
 getFragmentManager().beginTransaction()
           .replace(R.id.content, stuff)
           .addToBackStack(null).commit();
 drawer.post(onNavChange);
}

 public class ListProductsFragment extends SherlockFragment {
private ListView list;

public static ListProductsFragment newInstance() {
  ListProductsFragment f = new ListProductsFragment();
  return f;
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
  View V = inflater.inflate(R.layout.list, container, false);
  list = (ListView)V.findViewById(android.R.id.list);
  list.setOnItemClickListener(new OnItemClickListener() {
    public void onItemClick(AdapterView<?> parent, View view,
      int position, long id) {
     // This is important bit
     Fragment productDetailFragment = FragmentProductDetail.newInstance();
     FragmentTransaction transaction = getChildFragmentManager().beginTransaction();
     transaction.addToBackStack(null);
     transaction.replace(R.id.products_list_linear, productDetailFragment).commit();
    }
   });       
  return V;
}
}

@Override
public void onCountrySelected(Country c) {
 String url=getString(c.url);
 details.loadUrl(url);
 if (details.getId() != R.id.details) {
  getFragmentManager().beginTransaction()
                .replace(R.id.mainfrag, details,
                    TAG_DETAILS)
                .addToBackStack(null).commit();
 }
}

  private void showFragment(int fragmentIndex, boolean addToBackStack) {
    FragmentManager fm = getFragmentManager();
    FragmentTransaction transaction = fm.beginTransaction();
    for (int i = 0; i < fragments.length; i++) {
      if (i == fragmentIndex) {
        transaction.show(fragments[i]);
      } else {
        transaction.hide(fragments[i]);
      }
    }
    if (addToBackStack) {
      transaction.addToBackStack(null);
    }
    transaction.commit();
  }
}

/**
 * 描述：移除Fragment.
 * 
 * @param context
 *            the context
 */
public static void removeDialog(Context context) {
  try {
    FragmentActivity activity = (FragmentActivity) context;
    FragmentTransaction ft = activity.getFragmentManager()
        .beginTransaction();
    // 指定一个系统转场动画
    ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_CLOSE);
    Fragment prev = activity.getFragmentManager().findFragmentByTag(
        mDialogTag);
    if (prev != null) {
      ft.remove(prev);
    }
    ft.addToBackStack(null);
    ft.commit();
  } catch (Exception e) {
    // 可能有Activity已经被销毁的异常
    e.printStackTrace();
  }
}

  @Override
  public void onClick(View view){
    //Open editor for new
    FragmentTransaction ft = mFragmentManager.beginTransaction();
    ft.replace(R.id.fragment1, new CustomActionEditorFragment());
    ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
    ft.addToBackStack(null);
    ft.commitAllowingStateLoss();
  }
});

  @Override
  public boolean onPreferenceClick(Preference preference){
    long time = System.currentTimeMillis();
    if(time - lastVersionClick < 1000){
      if(versionClicks < 4){
        versionClicks++;
      }else{
        versionClicks = 0;
        FragmentTransaction ft = mFragmentManager.beginTransaction();
        ft.replace(R.id.fragment1, new DevOptionsFragment());
        ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
        ft.addToBackStack(null);
        ft.commitAllowingStateLoss();
      }
    }else versionClicks = 1;
    lastVersionClick = time;
    return false;
  }
});

  @Override
  public void onClick(View view) {
    final EndFragment toFragment = new EndFragment();
    FragmentTransitionLauncher
        .with(view.getContext())
        .image(BitmapFactory.decodeResource(getResources(), R.drawable.photo))
        .from(view.findViewById(R.id.fragment_start_imageview)).prepare(toFragment);
    getFragmentManager().beginTransaction().replace(R.id.content, toFragment).addToBackStack(null).commit();
  }
});

  public boolean onMenuItemClick(android.view.MenuItem item){
    if(item.getGroupId()==-1){
      //Open actions manager
      FragmentTransaction ft = mFragmentManager.beginTransaction();
      ft.replace(R.id.fragment1, new CustomActionManagerFragment());
      ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
      ft.addToBackStack(null);
      ft.commitAllowingStateLoss();
    }else{
      onActionSelected(cmds.get(item.getItemId()));
    }
    return true;
  }
});

void crackReaver(MainActivity activity){
  FragmentManager fragmentManager = activity.getFragmentManager();
  ReaverFragment.ap = this;
  FragmentTransaction ft = fragmentManager.beginTransaction();
  ft.replace(R.id.fragment1, activity.reaverFragment.setAutostart(true));
  ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
  ft.addToBackStack(null);
  ft.commitAllowingStateLoss();
  fragmentManager.executePendingTransactions();      //Wait for everything to be set up
}
void disconnectAll(){

fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();

static void isolate(String mac){
  is_ap = getAPByMac(mac);
  if(is_ap!=null){
    IsolatedFragment.exit_on = mFragmentManager.getBackStackEntryCount();
    FragmentTransaction ft = mFragmentManager.beginTransaction();
    ft.replace(R.id.fragment1, new IsolatedFragment());
    ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
    ft.addToBackStack(null);
    ft.commitAllowingStateLoss();
  }
  Tile.filter();
  if(debug){
    if(is_ap==null) Log.d("HIJACKER/Main", "No AP isolated");
    else Log.d("HIJACKER/Main", "AP with MAC " + mac + " isolated");
  }
}
static void refreshState(){

ft.addToBackStack(null);
ft.commitAllowingStateLoss();
mFragmentManager.executePendingTransactions();

  @Override
  protected void onPostExecute(final Boolean success){
    if(!success) return;
    loadingDialog.setText(getString(R.string.starting_hijacker));
    if(watchdog){
      watchdogTask.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR);
    }
    //Load default fragment (airodump)
    if(mFragmentManager.getBackStackEntryCount()==0){
      FragmentTransaction ft = mFragmentManager.beginTransaction();
      ft.replace(R.id.fragment1, new MyListFragment());
      ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
      ft.addToBackStack(null);
      ft.commitAllowingStateLoss();
    }
    loadingDialog.dismissAllowingStateLoss();
    //Start
    if(pref.getBoolean("disclaimerAccepted", false)) main();
  }
}

MainFragment mainFragment = new MainFragment(this);
fragmentTransaction.replace(R.id.container, mainFragment);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();

ft.replace(R.id.fragment1, new SettingsFragment());
ft.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_OPEN);
ft.addToBackStack(null);
ft.commitAllowingStateLoss();

  private void jump(Fragment fragment){
    FragmentTransaction ft = mFragmentManager.beginTransaction();
    ft.replace( R.id.game_activity, fragment);
    ft.addToBackStack(null);
    ft.commit();
  }
}

protected void addFragment(int containerViewId, Fragment fragment, String fragmentTag, boolean addToBackStack) {
  FragmentTransaction transaction = getFragmentManager().beginTransaction();
  transaction.add(containerViewId, fragment, fragmentTag);
  if (addToBackStack) {
    transaction.addToBackStack(null);
  }
  transaction.commit();
}

public static void openCalendarPicker(YearMonthDay preset, Builder.CalendarPickerOnConfirm calendarPickerOnConfirm) {
  FragmentCalendarPicker fragmentCalendarPicker = FragmentCalendarPicker.newInstance(
      preset,
      calendarPickerOnConfirm);
  FragmentTransaction ft = activity.getFragmentManager().beginTransaction();
  ft.add(android.R.id.content, fragmentCalendarPicker);
  ft.addToBackStack("com.maxproj.calendarpicker");
  ft.commit();
}

  @Override
  public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    Log.d("tt", "setOnItemClickListener");
    MyFragment2 fragment2 = new MyFragment2();
    getFragmentManager().beginTransaction().hide(MyFragment.this).replace(R.id.fragment, fragment2).addToBackStack(null).commit();
  }
});