按back时，girdView应返回到相同的位置，同时无限滚动

@Override
protected void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    int scrollPosition = gridView.getFirstVisiblePosition();
    outState.putInt("scroll_position", scrollPosition);
}

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    gridView = findViewById(R.id.grid_view);

    if (savedInstanceState != null) {
        int scrollPosition = savedInstanceState.getInt("scroll_position");
        gridView.setSelection(scrollPosition);
    }

    // 其他初始化操作...
}

gridView.setOnScrollListener(new AbsListView.OnScrollListener() {
    @Override
    public void onScrollStateChanged(AbsListView view, int scrollState) {
        // 滚动状态改变时的处理
    }

    @Override
    public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
        // 滚动时的处理
        if (firstVisibleItem + visibleItemCount == totalItemCount) {
            // 滚动到底部，加载更多数据
            loadMoreData();
        }
    }
});

private void loadMoreData() {
    // 加载更多数据的逻辑处理
}