Android fragment state always null in onCreateView method and onActivityCreated method

Question

I have used multiple tabs in fragment class. I was failed in saving the state of fragment. I used the method onSaveInstanceState() and save a parameter in it. But when I came back to this fragment the saved state always shows "null". I tried all the questions and answers regarding to this.Still I am facing the same problem. Please could anyone help me to solve this.

MY CODE

 @Override
 public void onCreate(Bundle savedInstanceState) {
   // TODO Auto-generated method stub
   super.onCreate(savedInstanceState);
   setRetainInstance(true);
   super.onCreate(savedInstanceState);
   Log.d("savedInstanceStateInfo1", "" + savedInstanceState);
   if (null != savedInstanceState) {
    nAndroids = savedInstanceState.getInt("nAndroids");
    Log.d("NANDROIDS", "" + nAndroids);
   }
  }
  // Log.d("State in oncreate : ",""+savedInstanceState);

 @Override
 public void onActivityCreated(Bundle savedInstanceState) {
  super.onActivityCreated(savedInstanceState);
  setRetainInstance(true);
  Log.d("SavedinstanestateInfo", "" + savedInstanceState);
 }

 @Override
 public View onCreateView(LayoutInflater inflater, ViewGroup container,
  Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  if (container == null) {
   return null;
  }
  // final ActionBar ab=getActivity().getSupportActionBar();

  View v = (LinearLayout) inflater.inflate(R.layout.infotab, container, false);
  Log.d("SavedinstanestateInfo", "" + savedInstanceState);
  return v;
 }
 @Override
 public void onSaveInstanceState(Bundle outState) {
  outState.putInt("nAndroids", nAndroids);

  super.onSaveInstanceState(outState);
 }

yes i have checked that one i have stored a integer value in that but its show a null value in oncreateview methos when return back to fragment — poola naresh, Oct 22 '12 at 11:14

score 6 · Accepted Answer · edited May 23 '17 at 12:30

6

1) Apparently when using setRetainInstance(true), the Bundle for onRestoreInstanceState is null.

https://stackoverflow.com/a/8488107/1011746

2) Not necessary, but more customary to call super.onSaveInstanceState(outState) before making any modifications to outState. Same for super.onRestoreInstanceState(outState) in onRestoreInstanceState(Bundle outState).

edited May 23 '17 at 12:30

Community

1
1

answered Oct 28 '12 at 20:00

mindriot

14,149
4
29
40

Android fragment state always null in onCreateView method and onActivityCreated method

1 Answers1

Linked