Question

What is the correct way to handle an orientation change when using Fragments?

I have a landscape layout that contains 2 fragments (instantiated in code into FrameLayouts). When I switch to portrait mode (the layout of which contains only one FrameLayout that holds the left pane only), the right hand fragment is no longer required.

I am receiving an error:

E/AndroidRuntime(4519): Caused by: java.lang.IllegalArgumentException: No view found for id 0x7f060085 for fragment myFragment{418a2200 #2 id=0x7f060085}

which is assume is my activity trying to re-attach the fragment where it was before the orientation change but as the view that contains the fragment does not exist in portrait mode the error is thrown.

I have tried the following hide/remove/detach methods but still get the error. What is the correct way to tell a fragment it is not needed any more and do not try to display?

@Override
public void onCreate(Bundle b) {
    super.onCreate(b);
    Fragment f = getSupportFragmentManager().findFragmentById(R.id.fragholder2);

    //rightPane is a framelayout that holds my fragment.
    if (rightPane == null && f != null) {
         FragmentTransaction ft = getSupportFragmentManager().beginTransaction();
         ft.hide(f);     // This doesnt work
         ft.remove(f);   // neither does this
         ft.detach(f);   // or this
         ft.commit;
    }
}

Answer 1

I think I resolved it.

I added the fragment to the back stack and then before the activity closes popped it off again which effectively gets rid of it. Seems to work so far.