java.lang.IllegalStateException: The content of the adapter has changed but ExtendableListView 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.
点击＆＃34时，我偶尔会遇到异常;加载更多＆＃34;动态列表视图中的选项。
我在notifyDataSetChanged()内使用postExecute()。什么可以解决这个问题以及如何阻止应用程序崩溃？
adapter = new GHomeGridAdapter(getActivity().getApplicationContext(), R.layout.g_grid, ggridList);
gridview.setAdapter(adapter);
new GetData().execute(limit);
loadMore.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
loadMore.setVisibility(View.GONE);
new GetData().execute(limit);
}
});
gridview.setOnScrollListener(new AbsListView.OnScrollListener() {
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
if (gridview.getLastVisiblePosition() + 1 == limit) {
loadMore.setVisibility(View.VISIBLE);
}
}
private class GetData extends AsyncTask<Integer, Void, Void> {
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(myContext);
pDialog.setMessage("Please wait...");
pDialog.setCancelable(false);
pDialog.show();
}
@Override
protected Void doInBackground(Integer... arg0) {
GyHandler sh = new GyHandler();
int offest=arg0[0];
limit=arg0[0]+30;
String urlgifs="xyz";
String jsonStr = sh.makeServiceCall(urlgifs, GHandler.GET);
if (jsonStr != null) {
try {
JSONObject jsonObj = new JSONObject(jsonStr);
} catch (JSONException e) {
e.printStackTrace();
}
} else {
}
return null;
}
@Override
protected void onPostExecute(Void result) {
super.onPostExecute(result);
if (pDialog.isShowing())
pDialog.dismiss();
adapter.notifyDataSetChanged();
}
}
日志 -
java.lang.IllegalStateException: The content of the adapter has changed but ExtendableListView 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. [in ExtendableListView(2131427542, class com.etsy.android.grid.StaggeredGridView) with Adapter(class xyz.GiphyHomeGridAdapter)]
at com.etsy.android.grid.ExtendableListView.layoutChildren(ExtendableListView.java:559)
at com.etsy.android.grid.StaggeredGridView.layoutChildren(StaggeredGridView.java:358)
at com.etsy.android.grid.ExtendableListView.onLayout(ExtendableListView.java:513)
at android.view.View.layout(View.java:14937)
at android.view.ViewGroup.layout(ViewGroup.java:4651)
at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1055)
at android.view.View.layout(View.java:14937)
at android.view.ViewGroup.layout(ViewGroup.java:4651)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:14937)
at android.view.ViewGroup.layout(ViewGroup.java:4651)
at android.support.v4.widget.DrawerLayout.onLayout(DrawerLayout.java:887)
at android.view.View.layout(View.java:14937)
at android.view.ViewGroup.layout(ViewGroup.java:4651)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:14937)
at android.view.ViewGroup.layout(ViewGroup.java:4651)
at android.support.v7.internal.widget.ActionBarOverlayLayout.onLayout(ActionBarOverlayLayout.java:502)
at android.view.View.layout(View.java:14937)
at android.view.ViewGroup.layout(ViewGroup.java:4651)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:14937)
at android.view.ViewGroup.layout(ViewGroup.java:4651)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1671)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1525)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1434)
at android.view.View.layout(View.java:14937)
at android.view.ViewGroup.layout(ViewGroup.java:4651)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:453)
at android.widget.FrameLayout.onLayout(FrameLayout.java:388)
at android.view.View.layout(View.java:14937)
at android.view.ViewGroup.layout(ViewGroup.java:4651)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2132)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1872)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1075)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5878)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:761)
at android.view.Choreographer.doCallbacks(Choreographer.java:574)
at android.view.Choreographer.doFrame(Choreographer.java:544)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:747)
at android.os.Handler.handleCallback(Handler.java:733)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5086)
at java.lang.reflect.Method.invokeNative(Native Method)
答案 0 :(得分：-1)
尝试这样做以确保主线程中发生notify。
@Override
protected void onPreExecute() {
super.onPreExecute();
runOnUiThread(new Runnable() {
@Override
public void run() {
pDialog = new ProgressDialog(myContext);
pDialog.setMessage("Please wait...");
pDialog.setCancelable(false);
pDialog.show();
}
});
}
@Override
protected void onPostExecute(Void result)
{
super.onPostExecute(result);
if (pDialog.isShowing())
runOnUiThread(new Runnable() {
@Override
public void run() {
pDialog.dismiss();
adapter.notifyDataSetChanged();
}
});
}