recyclerview No adapter attached; skipping layout

Question

Just implemented RecyclerView in my code, replacing ListView.

Everything works fine. The data is displayed.

But error messages are

Answer 1

I had the same error I fixed it doing this if you are waiting for data like me using retrofit or something like that

Put before Oncreate

private ArtistArrayAdapter adapter;
private RecyclerView recyclerView;

Put them in your Oncreate

 recyclerView = (RecyclerView) findViewById(R.id.cardList);
 recyclerView.setHasFixedSize(true);
 recyclerView.setLayoutManager(new LinearLayoutManager(this));
 adapter = new ArtistArrayAdapter( artists , R.layout.list_item ,getApplicationContext());
 recyclerView.setAdapter(adapter);

When you receive data put

adapter = new ArtistArrayAdapter( artists , R.layout.list_item ,getApplicationContext());
recyclerView.setAdapter(adapter);

Now go in your ArtistArrayAdapter class and do this what it will do is if your array is empty or is null it will make GetItemCount return 0 if not it will make it the size of artists array

@Override
public int getItemCount() {

    int a ;

    if(artists != null && !artists.isEmpty()) {

        a = artists.size();
    }
    else {

        a = 0;

     }

   return a;
}

Answer 2

In Kotlin we had this weird illogical issue.

This didn't work:

 mBinding.serviceProviderCertificates.apply {
            adapter = adapter
            layoutManager =  LinearLayoutManager(activity)
        }

While this worked:

mBinding.serviceProviderCertificates.adapter = adapter
mBinding.serviceProviderCertificates.layoutManager = LinearLayoutManager(activity)

Once I get more after work hours, I will share more insights.

Answer 3

I have the same situation with you, display is ok, but error appear in the locat. That's my solution: (1) Initialize the RecyclerView & bind adapter ON CREATE()

RecyclerView mRecycler = (RecyclerView) this.findViewById(R.id.yourid);
mRecycler.setAdapter(adapter);

(2) call notifyDataStateChanged when you get the data

adapter.notifyDataStateChanged();

In the recyclerView's source code, there is other thread to check the state of data.

public RecyclerView(Context context, @Nullable AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    this.mObserver = new RecyclerView.RecyclerViewDataObserver(null);
    this.mRecycler = new RecyclerView.Recycler();
    this.mUpdateChildViewsRunnable = new Runnable() {
        public void run() {
            if(RecyclerView.this.mFirstLayoutComplete) {
                if(RecyclerView.this.mDataSetHasChangedAfterLayout) {
                    TraceCompat.beginSection("RV FullInvalidate");
                    RecyclerView.this.dispatchLayout();
                    TraceCompat.endSection();
                } else if(RecyclerView.this.mAdapterHelper.hasPendingUpdates()) {
                    TraceCompat.beginSection("RV PartialInvalidate");
                    RecyclerView.this.eatRequestLayout();
                    RecyclerView.this.mAdapterHelper.preProcess();
                    if(!RecyclerView.this.mLayoutRequestEaten) {
                        RecyclerView.this.rebindUpdatedViewHolders();
                    }

                    RecyclerView.this.resumeRequestLayout(true);
                    TraceCompat.endSection();
                }

            }
        }
    };

In the dispatchLayout(), we can find there is the error in it:

void dispatchLayout() {
    if(this.mAdapter == null) {
        Log.e("RecyclerView", "No adapter attached; skipping layout");
    } else if(this.mLayout == null) {
        Log.e("RecyclerView", "No layout manager attached; skipping layout");
    } else {

Answer 4

I had the same problem and realized I was setting both the LayoutManager and adapter after retrieving the data from my source instead of setting the two in the onCreate method.

salesAdapter = new SalesAdapter(this,ordersList);
        salesView.setLayoutManager(new LinearLayoutManager(getApplicationContext()));
        salesView.setAdapter(salesAdapter);

Then notified the adapter on data change

               //get the Orders
                Orders orders;
                JSONArray ordersArray = jObj.getJSONArray("orders");
                    for (int i = 0; i < ordersArray.length() ; i++) {
                        JSONObject orderItem = ordersArray.getJSONObject(i);
                        //populate the Order model

                        orders = new Orders(
                                orderItem.getString("order_id"),
                                orderItem.getString("customer"),
                                orderItem.getString("date_added"),
                                orderItem.getString("total"));
                        ordersList.add(i,orders);
                        salesAdapter.notifyDataSetChanged();
                    }

Answer 5

My problem was my recycler view looked like this

        <android.support.v7.widget.RecyclerView
        android:id="@+id/chatview"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent">
    </android.support.v7.widget.RecyclerView>

When it should have looked like this

       <android.support.v7.widget.RecyclerView
        android:id="@+id/chatview"
        android:layout_width="395dp"
        android:layout_height="525dp"
        android:layout_marginTop="52dp"
        app:layout_constraintTop_toTopOf="parent"
        tools:layout_editor_absoluteX="8dp"></android.support.v7.widget.RecyclerView>
</android.support.constraint.ConstraintLayout>

Answer 6

In my case it happened cause i embedded a RecyclerView in a LinearLayout.

I previously had a layout file only containing one root RecyclerView as follows

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.RecyclerView
    android:id="@+id/list"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:listitem="@layout/fragment_products"

    android:name="Products.ProductsFragment"
    app:layoutManager="LinearLayoutManager"
    tools:context=".Products.ProductsFragment"

    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"/>

I believe the problem is within the 3 lines separated. Anyway, I think its a simple problem, ill be working on it tomorrow; thought i should write what i found before forgetting about this thread.