Question

我有RecyclerView和适配器：

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="wrapper">
  <div class="element_wrapper" data-id="20" data-parent="" style="display:none">
    <button class="toggler_btn" type="button" data-id="20" data-parent="">+</button> Building 1
    <button class="add_btn" type="button">Add</button>
    <button class="edit_btn" type="button" data-id="20" data-parent="">Edit</button>
    <button class="delete_btn" type="button" data-id="20">Delete</button>
    <div class="element_wrapper" data-id="25" data-parent="20" style="display:none">
      <button class="toggler_btn" type="button" data-id="25" data-parent="20">+</button> Something Else
      <button class="add_btn" type="button">Add</button>
      <button class="edit_btn" type="button" data-id="25" data-parent="20">Edit</button>
      <button class="delete_btn" type="button" data-id="25">Delete</button>
      <div class="element_wrapper" data-id="30" data-parent="25" style="display:none">
        <button class="toggler_btn" type="button" data-id="30" data-parent="25">+</button> Something Else
        <button class="add_btn" type="button">Add</button>
        <button class="edit_btn" type="button" data-id="30" data-parent="25">Edit</button>
        <button class="delete_btn" type="button" data-id="30">Delete</button>
      </div>
    </div>
  </div>

我拍摄了两个截屏视频，在此视频中tap gpu的时间轴，在第二个tap时，屏幕会在项目更新时闪烁。在两件奇怪的事情发生。有什么问题？

Answer 1

我强烈建议您在在RecyclerView中实例化适配器之前将JSONObject解析为ArrayList，并从ArrayList访问每个项目，这可能会导致性能问题。你可以用Gson做到这一点：

Gson gson = new Gson();
TypeToken<ArrayList<YourValue>> token = new TypeToken<ArrayList<YourValue>>() {};
ArrayList<YourValue> listValues = gson.fromJson(values.toString(), token.getType());

RecyclerView没有原因滞后

1 个答案: