The content of the adapter has changed but ListView did not receive a notification. Make sure the co

最新推荐文章于 2021-06-11 13:21:29 发布

转载最新推荐文章于 2021-06-11 13:21:29 发布 · 361 阅读

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#android #Exception #listview

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本文解决了一个常见问题：当使用多线程更新ListView时，如何确保数据正确地从后台线程传递到UI线程并更新视图。介绍了通过缓存处理避免ListView更新时出现的问题，并给出了具体的实现步骤。

问题：The content of the adapter has changed but ListView did not receive a notification. Make sure the content of your adapter is not modified from a background thread, but only from the UI thread. Make sure your adapter calls notifyDataSetChanged() when its content changes.
翻译：适配器的内容已经改变但ListView没有收到通知。确保适配器的内容不是从后台线程修改的，而是从UI线程中修改的。确保您的适配器调用notifydatasetchanged()当其含量的变化。
解决办法：
在用到多线程的时候，可以对数据做缓存处理，比如与ListView绑定的数据存储在ArrayList （dataList），在线程中先将数据加入到临时ArrayList（tmpList），最后在调用notifyDataSetChanged()方法通知UI更新之前，把临时ArrayList（tmpList）中的数据更新到ArrayList（dataList）中，然后清空临时ArrayList（tmpList）数据。

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