在异步任务

Question

我有一个活动类，我将它转换为片段类。我在我的异步任务的onPostExecute中收到错误。

 private class FetchData extends AsyncTask<Void, Void, Void> {

        @Override
        protected Void doInBackground(Void... voids) {
            displayData();
            return null;
        }

        @Override
        protected void onPostExecute(Void aVoid) {
            super.onPostExecute(aVoid);
            try {
                Collections.sort(mData);
            } catch (IllegalStateException ise) {
                LOG.warn("Illegal state exception, ignoring it {}", ise);
            }
            PrintStockAdapter adapter = new PrintStockAdapter(getActivity().getApplicationContext(), mData);
            details.setAdapter(adapter);
            adapter.notifyDataSetChanged();
        }
    }

错误发生在这里，

    details.setAdapter(adapter);

日志，

java.lang.ClassCastException: android.support.v4.view.ViewPager$LayoutParams cannot be cast to android.widget.AbsListView$LayoutParams
                                                                              at android.widget.ListView.clearRecycledState(ListView.java:538)
                                                                              at android.widget.ListView.resetList(ListView.java:524)
                                                                              at android.widget.ListView.setAdapter(ListView.java:468)
                                                                              at com.app.forms.InventoryReportFragment$FetchData.onPostExecute(InventoryReportFragment.java:253)
                                                                              at com.app.forms.InventoryReportFragment$FetchData.onPostExecute(InventoryReportFragment.java:236)

变量详细信息是列表视图。 private ListView details;

将活动迁移到片段时，我在哪里出错了？每次异步任务运行时都会发生此崩溃。