@TargetApi(Build.VERSION_CODES.LOLLIPOP)
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
if (null != mCurrentPage) {
outState.putInt(STATE_CURRENT_PAGE_INDEX, mCurrentPage.getIndex());
}
}
/** Updates the state of 2 control buttons in response to the current page index. */
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
private void updateUi() {
int index = mCurrentPage.getIndex();
int pageCount = mPdfRenderer.getPageCount();
// getActivity().setTitle(getString(R.string.app_name_with_index, index + 1, pageCount));
}