Recyclerview GridLayoutManager scrollToPositionWithOffset not working

Question

您好我正在使用RecyclerView与GridLayoutManager加载图像，但它的scrollToPositionWithOffset（）方法不起作用。

我已经在onSavedInstanceState（）中保存了recyclerview第一个可见的项目位置，并且我在onViewStateRestored（）中检索了它的值，并且每次都获取正确的位置，但RecyclerView不滚动到所需的位置。我通过旋转屏幕但它没有滚动到所需的位置。

这里是我的代码：

@Override 
public void onSaveInstanceState(Bundle outState) { 
    super.onSaveInstanceState(outState); 
    outState.putInt("position", ((GridLayoutManager) recyclerView.getLayoutManager()).findFirstVisibleItemPosition()); 
} 

@Override 
public void onViewStateRestored(@Nullable Bundle savedInstanceState) { 
    super.onViewStateRestored(savedInstanceState); 
    if (savedInstanceState != null) { 
     int state = savedInstanceState.getInt("position"); 
     ((GridLayoutManager) recyclerView.getLayoutManager()).scrollToPositionWithOffset(state, 20); 
    } 
} 

Answer 1

使用smoothScrollToPosition()而不是scrollToPositionWithOffset()

试试这个：

@Override 
public void onViewStateRestored(@Nullable Bundle savedInstanceState) { 
    super.onViewStateRestored(savedInstanceState); 
    if (savedInstanceState != null) { 
     int state = savedInstanceState.getInt("position"); 
     recyclerView.smoothScrollToPosition(state); 
    } 
}