AlertDialog with RecyclerView

Question

I want to create custom dialog with list of some items in my app. Here my code of adapter

Context context; ArrayList statusList;

public MaritalStatusAdapter(Context context, ArrayList<String> statusList){
    this.context = context;
    this.statusList = statusList;
    Logger.msg("Reg", ":" + statusList.get(0));
}

@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
    View v = LayoutInflater.from(context).inflate(R.layout.spinner_list_item, parent, false);
    Logger.msg("Reg", "here");
    return new ViewHolder(v);
}

@Override
public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
    holder.item.setText(statusList.get(position));
    Logger.msg("Reg", "here");
}

@Override
public long getItemId(int position) {
    return position;
}

@Override
public int getItemCount() {
    return statusList.size();
}

class ViewHolder extends RecyclerView.ViewHolder {
    @BindView(R.id.item)
    TextView item;

    public ViewHolder(View itemView) {
        super(itemView);
        ButterKnife.bind(this, itemView);
        Logger.msg("Reg", "heee555y");
    }

    @OnClick(R.id.item)
    public void onClick(){
        Logger.msg("Reg", "heeey");
    }
}

I think here all code is fine and it should work as I want. Here my code of dialog builder

AlertDialog.Builder builder = new AlertDialog.Builder(getContext());

            LayoutInflater inflater = getLayoutInflater();
            View dialogView = (View) inflater.inflate(R.layout.custom_alert_dialog, null);

            builder.setView(dialogView);

            RecyclerView rv = (RecyclerView) dialogView.findViewById(R.id.rv);

            MaritalStatusAdapter adapter = new MaritalStatusAdapter(getActivity(), maritalStatusList);
            rv.setAdapter(adapter);

            AlertDialog dialog = builder.create();

            dialog.show();

So, this code is displaying me my custom dialog view with my edit text, which was added in xml file, but do not display anything in recyclerView. I am sure that my xml file is ok. However I do not understand why I cannot see my items in my list.

    <?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <EditText
        android:id="@+id/search"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        android:background="@null"
        android:drawableLeft="@drawable/search"
        android:drawablePadding="10dp"
        android:hint="@string/search"
        android:singleLine="true"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <View
        android:id="@+id/view1"
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginBottom="8dp"
        android:layout_marginTop="8dp"
        android:background="@color/vertical_line"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/search" />

    <android.support.v7.widget.RecyclerView
        android:id="@+id/rv"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginBottom="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="8dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/view1" />
</android.support.constraint.ConstraintLayout>

At the top my custom_alert_dialog.xml file, but how I said I think here there is no mistake

Can someone help me or share some good tutorial for such activity. It may be small mistake, by the way.))

Answer 1

I think you should set a LayoutManager to your recyclerView. add this line before setting the adapter:

rv.setLayoutManager(new LinearLayoutManager(getActivity()));

Answer 2

If someone will find it useful, the mistake was that my RecyclerView height is 0dp, so I changed it to wrap_content. I thought it will expand to its parent size, as it should be according to ConstraintLayout properties.