Recycler View not opening within a Relative Layout. No compilation errors - android-layout

Question

I have a fragment which is using a Relative layout. Within that XML, I have two views - a TextView and a RecyclerView
There are no compilation errors, but the cards from the RecyclerView don't show up while running the app:
Here's the Fragment code:
package com.hfad.bitsandpizzas;
import android.content.Intent;
import android.os.Bundle;
import android.app.Fragment;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.RelativeLayout;
public class TopFragment extends Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
RelativeLayout layout = (RelativeLayout)inflater.inflate(R.layout.fragment_top, container, false);
RecyclerView pizzaRecycler = (RecyclerView)layout.findViewById(R.id.pizza_recycler);
String[] pizzaNames = new String[2];
for(int i=0; i<2; i++){
pizzaNames[i]=Pizza.pizzas[i].getName();
}
int[] pizzaImages = new int[2];
for(int i=0; i<2; i++){
pizzaImages[i]=Pizza.pizzas[i].getImageResourceId();
}
GridLayoutManager layoutManager = new GridLayoutManager(getActivity(),2);
pizzaRecycler.setLayoutManager(layoutManager);
CaptionedImagesAdapter adapter = new CaptionedImagesAdapter(pizzaNames, pizzaImages);
pizzaRecycler.setAdapter(adapter);
adapter.setListener(new CaptionedImagesAdapter.Listener() {
#Override
public void onClick(int position){
Intent intent = new Intent(getActivity(), PizzaDetailActivity.class);
intent.putExtra(PizzaDetailActivity.EXTRA_PIZZANO, position);
getActivity().startActivity(intent);
}
});
return layout;
}
}
Here is the layout XML:
<RelativeLayout
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"
tools:context=".MainActivity">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="#string/title_top"
android:id="#+id/top_text"/>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/pizza_recycler"
android:layout_below="#+id/top_text"
android:layout_marginTop="10dp"
android:scrollbars="vertical"/>
And here is the Adapter code:
package com.hfad.bitsandpizzas;
import android.graphics.drawable.Drawable;
import android.support.v7.widget.CardView;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;
public class CaptionedImagesAdapter extends RecyclerView.Adapter<CaptionedImagesAdapter.ViewHolder> {
private String[] captions;
private int[] imageIds;
private Listener listener;
public CaptionedImagesAdapter(String[] captions, int[] imageIds){
this.captions = captions;
this.imageIds = imageIds;
}
public static class ViewHolder extends RecyclerView.ViewHolder {
private CardView cardView;
public ViewHolder(CardView v){
super(v);
cardView=v;
}
}
#Override
public CaptionedImagesAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
CardView cv = (CardView) LayoutInflater.from(parent.getContext()).inflate(R.layout.card_captioned_image, parent, false);
return new ViewHolder(cv);
}
#Override
public void onBindViewHolder(ViewHolder holder, final int position) {
CardView cardView = holder.cardView;
ImageView imageView = (ImageView)cardView.findViewById(R.id.info_image);
Drawable drawable = cardView.getResources().getDrawable(imageIds[position]);
imageView.setImageDrawable(drawable);
imageView.setContentDescription(captions[position]);
TextView textView = (TextView)cardView.findViewById(R.id.info_text);
textView.setText(captions[position]);
cardView.setOnClickListener(new View.OnClickListener(){
#Override
public void onClick(View v){
if(listener!=null){
listener.onClick(position);
}
}
});
}
#Override
public int getItemCount() {
return captions.length;
}
public static interface Listener{
public void onClick(int position);
}
public void setListener(Listener listener){
this.listener=listener;
}
}
Thanks!

Answer 1

The TextView's height in your layout is set to "match_parent". The fragment is set to match_parent as well and since probably the activity is set the same way, this means that your TextView will occupy the whole screen.
I imported your code and with minimal changes to by-pass missing objects, I was able to reproduce the problem.
By changing the height for the TextView to be "wrap_content", you'll be making room for the RecyclerView.