android - Show DialogFragment from onActivityResult

Question

I have the following code in my onActivityResult for a fragment of mine:

onActivityResult(int requestCode, int resultCode, Intent data){
   //other code
   ProgressFragment progFragment = new ProgressFragment();  
   progFragment.show(getActivity().getSupportFragmentManager(), PROG_DIALOG_TAG);
   // other code
}

However, I'm getting the following error:

Caused by: java.lang.IllegalStateException: Can not perform this action after onSaveInstanceState   

Anybody know what's going on, or how I can fix this? I should note I'm using the Android Support Package.

Answer 1

If you use Android support library, onResume method isn't the right place, where to play with fragments. You should do it in onResumeFragments method, see onResume method description: http://developer.android.com/reference/android/support/v4/app/FragmentActivity.html#onResume%28%29

So the correct code from my point of view should be:

private boolean mShowDialog = false;

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data){
  super.onActivityResult(requestCode, resultCode, data);

  // remember that dialog should be shown
  mShowDialog = true;
}

@Override
protected void onResumeFragments() {
  super.onResumeFragments();

  // play with fragments here
  if (mShowDialog) {
    mShowDialog = false;

    // Show only if is necessary, otherwise FragmentManager will take care
    if (getSupportFragmentManager().findFragmentByTag(PROG_DIALOG_TAG) == null) {
      new ProgressFragment().show(getSupportFragmentManager(), PROG_DIALOG_TAG);
    }
  }
}