SwipeRefreshLayout is hidden on an empty RecyclerView

Question

I have a Fragment with SwipeRefreshLayout and then RecyclerView as a child. When the Fragment is committed, it starts talking to the server to get some data and populate the CustomAdapter that will serve the RecyclerView.

The user can update the content by expanding it or by clicking a button in the ActionBar. In the latter case, I manually call swipeRefreshLayout.setRefreshing(true) . So there is still no problem.

The problem occurs when I manually call the update status during the first load of RecyclerView ( onStart() ). The progress indicator is not displayed, and I assume that RecyclerView is still empty, as it takes a few seconds to get all the data ...

I leave you the code.

Fragment Code:

 public class MyFragment extends Fragment implements SwipeRefreshLayout.OnRefreshListener { @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { View mView = inflater.inflate(R.layout.fragment_stop, container, false); mRecyclerView = (RecyclerView) mView.findViewById(R.id.recyclerView1); mRecyclerView.addItemDecoration(new DividerItemDecoration(getActivity(), DividerItemDecoration.VERTICAL_LIST)); mRecyclerView.setHasFixedSize(true); mRecyclerView.setLayoutManager(new LinearLayoutManager(getActivity())); mRecyclerView.setItemAnimator(new DefaultItemAnimator()); //SwipeRefreshLayout retrieved and configured swipeLayout = (SwipeRefreshLayout) mView.findViewById(R.id.swipe_container); swipeLayout.setOnRefreshListener(this); swipeLayout.setColorSchemeResources( R.color.primaryColor, R.color.cyan_500, R.color.light_green_500, R.color.amber_500); return mView; } ... @Override public void onStart() { super.onStart(); executeSchedule(); //First execution and data loading. } ... @Override public void onRefresh() { executeSchedule(); } ... public void executeSchedule() { new Schedule().execute(); } private class Schedule extends AsyncTask<Void, Void, Void> { ... @Override protected void onPreExecute() { super.onPreExecute(); if(!swipeLayout.isRefreshing()) { swipeLayout.setRefreshing(true); //set refresh state } } @Override protected Void doInBackground(Void... params) { ... } @Override protected void onPostExecute(Void result) { adap = new CustomAdapter(getActivity(), ...); mRecyclerView.setAdapter(adap); swipeLayout.setRefreshing(false); } } 

XML code:

 <FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent"> <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent"> <TextView android:id="@+id/section_label" android:layout_width="wrap_content" android:layout_height="wrap_content"/> <android.support.v4.widget.SwipeRefreshLayout xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/swipe_container" android:layout_width="match_parent" android:layout_height="match_parent"> <android.support.v7.widget.RecyclerView android:id="@+id/recyclerView1" android:layout_width="match_parent" android:layout_height="match_parent" android:paddingLeft="4dp" android:paddingRight="4dp" android:paddingBottom="2dp" android:layout_marginTop="5dp" android:divider="#e0e0e0" tools:context=".MyFragment" /> </android.support.v4.widget.SwipeRefreshLayout> </RelativeLayout> </FrameLayout> 

What would be the best practice to solve this problem? Adding a second dummy SwipeRefreshLayout? Run a blank adapter immediately?

Answer 1

You need to call the measurement method before calling setRefreshing(true) .
Take a look at: SwipeRefreshLayout without animation when creating fragments . Perhaps this may be helpful.

Answer 2

I had a problem with the fact that SwipeRefreshLayout does not work with an empty recycler, so I created a very simple empty adapter.

 public class EmptyAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> { @Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { return null; } @Override public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { } @Override public int getItemCount() { return 0; } }