[Android] 화면 방향 변경 시에도 RecyclerView의 Position 유지하기 code3.java

@Override
public void onViewStateRestored(@Nullable Bundle savedInstanceState) {
    super.onViewStateRestored(savedInstanceState);
    if (savedInstanceState != null) {
        mLayoutManagerSavedState = savedInstanceState.getParcelable("key");
    }
}

@Override
public void onStart() {
    super.onStart();
    if (getArguments() != null) {
        mDataArray = getArguments().getParcelableArrayList("key_datas");

        mAdapter = new MyAdapter(mDataArray, getContext());
        mRecyclerView.setAdapter(mAdapter);

        if (mLayoutManagerSavedState != null) {
            mRecycleriew.getLayoutManager().onRestoreInstanceState(mLayoutManagerSavedState);
        }
    }
}