Android 回收视图更新
我有一个要更新的recycler视图。它像Instagram Posts一样,从服务器获取post数据并将其添加到数组列表中,然后使用notifyDataSetChanged()函数更新适配器。但当它要更新时,会出现此错误Android 回收视图更新,android,arrays,updates,android-recyclerview,Android,Arrays,Updates,Android Recyclerview,我有一个要更新的recycler视图。它像Instagram Posts一样,从服务器获取post数据并将其添加到数组列表中,然后使用notifyDataSetChanged()函数更新适配器。但当它要更新时,会出现此错误 android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
android.view.ViewRootImpl$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$2.run(MainActivity.java:179)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:257)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1162)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:636)
at java.lang.Thread.run(Thread.java:784)
这是我的密码
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();
}
}
});
我认为发生错误是因为AsyncTask,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,并且由于该应用程序启动时间过长。
我能做什么?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();
}
});
另一个解决方案是让一个类从AsyncTask扩展它,重写doInBackground和on post execute方法。
获取doInBackground()上的数据并更新ui onPostExecute()
指南:使用runOnUiThread包装通知我发布的示例