Handling orientation changes with Fragments

Question

I\'m currently testing my app with a multipane Fragment-ised view using the HC compatibility package, and having a lot of difficultly handling orientation chang

Answer 1

Create new Instance only for First Time.

This does the trick:
Create a new Instance of Fragment when the activity start for the first time else reuse the old fragment.
How can you do this?
FragmentManager is the key

Here is the code snippet:

if(savedInstanceState==null) {
    userFragment = UserNameFragment.newInstance();
    fragmentManager.beginTransaction().add(R.id.profile, userFragment, "TAG").commit();
}
else {
    userFragment = fragmentManager.findFragmentByTag("TAG");
}

Save data on the fragment side

If your fragment has EditText, TextViews or any other class variables which you want to save while orientation change. Save it onSaveInstanceState() and Retrieve them in onCreateView() method

Here is the code snippet:

// Saving State

@Override
public void onSaveInstanceState(Bundle outState) {
     super.onSaveInstanceState(outState);
     outState.putString("USER_NAME", username.getText().toString());
     outState.putString("PASSWORD", password.getText().toString());
}

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup parent, Bundle savedInstanceState) {

     View view = inflater.inflate(R.layout.user_name_fragment, parent, false);

     username = (EditText) view.findViewById(R.id.username);
     password = (EditText) view.findViewById(R.id.password);


     // Retriving value

     if (savedInstanceState != null) {
         username.setText(savedInstanceState.getString("USER_NAME"));
         password.setText(savedInstanceState.getString("PASSWORD"));
     }

     return view;
}

You can see the full working code HERE