Java 刷新视图 Android
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Refresh a view Android
提问by Sam97305421562
I want to refresh a listview. When I am getting a value from different class I want it to update that to list view. I am creating a thread for refreshing the list but I am getting an exception:
我想刷新一个列表视图。当我从不同的类获取值时，我希望它更新到列表视图。我正在创建一个线程来刷新列表，但出现异常：
Only the original thread that created a thread a view hierarchy can touch its views
Only the original thread that created a thread a view hierarchy can touch its views
How to proceed?
如何进行？
采纳答案by Prashast
Instead of trying to refresh the view to update the list just take the Adapter object and call the notifyDataSetChanged() API.
无需尝试刷新视图来更新列表，只需获取 Adapter 对象并调用 notifyDataSetChanged() API。
回答by Josef Pfleger
Whenever you work with multiple threads in an Android GUI you should use Handlers. The Android Dev Guide has a good example of how to use Handlers with a ProgressDialogwhen you expand the subsection Example ProgressDialog with a second threadhere.
每当您在 Android GUI 中使用多个线程时，您都应该使用Handlers。Android Dev Guide 有一个很好的示例，说明当您在此处使用第二个线程展开示例 ProgressDialog小节时，如何将Handlers 与 a一起使用。ProgressDialog
The example should be easy to understand and help you to apply the same concept to your list view.
该示例应该易于理解并帮助您将相同的概念应用于您的列表视图。
