RecyclerView更新

Question

我有一个要更新的回收站视图 it.It 喜欢从服务器获取 post 数据并将其添加到数组列表并使用 notifyDataSetChanged() 更新适配器 function.but 当它想要更新时出现此错误。

android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
    at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:7905)
    at android.view.ViewRootImpl.requestLayout(ViewRootImpl.java:1276)
    at android.view.View.requestLayout(View.java:22139)
    at android.view.View.requestLayout(View.java:22139)
    at android.view.View.requestLayout(View.java:22139)
    at android.view.View.requestLayout(View.java:22139)
    at android.view.View.requestLayout(View.java:22139)
    at android.view.View.requestLayout(View.java:22139)
    at android.view.View.requestLayout(View.java:22139)
    at android.support.v7.widget.RecyclerView.requestLayout(RecyclerView.java:3970)
    at android.support.v7.widget.RecyclerView$RecyclerViewDataObserver.onChanged(RecyclerView.java:5060)
    at android.support.v7.widget.RecyclerView$AdapterDataObservable.notifyChanged(RecyclerView.java:11540)
    at android.support.v7.widget.RecyclerView$Adapter.notifyDataSetChanged(RecyclerView.java:6762)
    at com.example.MainActivity.run(MainActivity.java:179)
    at android.os.AsyncTask$SerialExecutor.run(AsyncTask.java:257)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
    at java.lang.Thread.run(Thread.java:784)

这是我的代码

AsyncTask.execute(new Runnable() {
        @Override
        public void run() {
            while (true) {
                String name = getHtml.getUrlContent("URL" + something);
                something += 1;
                list.add(new Model(Model.IMAGE_TYPE, name));
                adapter.notifyDataSetChanged();
            }
        }
    });

我认为错误是由于 AsyncTask 而发生的，然后我将其更改为 runOnUiThread() 函数，但此方法首先获取所有数据，然后创建视图，因为该应用程序启动时间太长。我能做什么？

Answer 1

你的方法不是最好的，可能有很多问题，但你可以使用

runOnUiThread(new Runnable() {
     void run() {
           adapter.notifyDataSetChanged();
     }
});

其他解决方案是 class 从 AsyncTask 扩展它，覆盖 doInBackground 和 post 执行方法。在 doInBackground() 上获取数据并更新 ui onPostExecute()

Guide: https://developer.android.com/reference/android/os/AsyncTask

RecyclerView更新

RecyclerView Update

arrays

android

updates

android-recyclerview