如何改變GridLayoutManager列動態

Question

我有一個GridLayoutManager視圖回收站連接。默認情況下，它將顯示ONE COLUMN，如果用戶點擊按鈕，它將顯示在兩列中。

adapter = new ProductAdapter(getActivity(), productList); 
     gridLayoutManager = new GridLayoutManager(getActivity(), 1); 
     setLayoutManager(true); 

下面

是函數，其中我改變列

private void setLayoutManager(boolean isList) { 
     if (isList) { 
      adapter.VIEW_TYPE = 0 ; 
      gridLayoutManager.setSpanCount(1); 
      //product_recycler_view.setLayoutManager(new LinearLayoutManager(getActivity(), LinearLayoutManager.VERTICAL, false)); 
      product_recycler_view.setLayoutManager(gridLayoutManager); 

     } else { 
      adapter.VIEW_TYPE = 1 ; 
      gridLayoutManager.setSpanCount(2); 
      product_recycler_view.setLayoutManager(gridLayoutManager); 
     } 
     product_recycler_view.setAdapter(adapter); 
     adapter.notifyDataSetChanged(); 
     // product_recycler_view.notify(); 
     // product_recycler_view.notifyAll(); 

     System.out.println("clicked isList "+ isList); 

    } 

Answer 1

試試這個

private void setLayoutManager(boolean isList) { 
     if (isList) { 
      product_recycler_view.setLayoutManager(new LinearLayoutManager(this)); 
     } else { 
      product_recycler_view.setLayoutManager(gridLayoutManager); 
     } 
     product_recycler_view.setAdapter(adapter); 
     adapter.notifyDataSetChanged(); 
     // product_recycler_view.notify(); 
     // product_recycler_view.notifyAll(); 

     System.out.println("clicked isList "+ isList); 
}