Crear listas y tarjetas en Android

El widget RecyclerView es una versión más flexible y avanzada de ListView. Este widget es un contenedor para mostrar grandes conjuntos de datos que se pueden desplazar de manera muy eficiente al mantener una cantidad limitada de vistas. Usa el widget RecyclerView cuando tengas conjuntos de datos cuyos elementos cambien en tiempo de ejecución sobre la base de la acción del usuario o los eventos de la red.

RecyclerView

List example

	public class CustomAdapter extends RecyclerView.Adapter<CustomAdapter.ViewHolder> {
	private String[] data;

	public static class ViewHolder extends RecyclerView.ViewHolder {
	// each data item is just a string in this case
	public TextView title;
	public ViewHolder(View view) {
	super(view);
	title = view.findViewById(R.id.title);
	}
	}

	public CustomAdapter(String[] data) {
	data = data;
	}
	@Override
	public CustomAdapter.ViewHolder onCreateViewHolder(ViewGroup parent,
	int viewType) {
	View view = LayoutInflater.from(parent.getContext())
	.inflate(R.layout.item_custom, parent, false);
	return new ViewHolder(view);
	}

	@Override
	public void onBindViewHolder(ViewHolder holder, int position) {
	holder.title.setText(data[position]);
	}

	@Override
	public int getItemCount() {
	return data.length;
	}
	}

view raw CustomAdapter.java hosted with ❤ by GitHub

	dependencies {
	...
	compile 'com.android.support:cardview-v7:21.0.+'
	compile 'com.android.support:recyclerview-v7:21.0.+'
	...
	}

view raw gradle.build hosted with ❤ by GitHub

	<?xml version="1.0" encoding="utf-8"?>
	<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	xmlns:tools="http://schemas.android.com/tools"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:orientation="vertical" >

	<TextView
	android:id="@+id/title"
	android:layout_width="match_parent"
	android:layout_height="wrap_content" />

	</LinearLayout>

view raw item_custom.xml hosted with ❤ by GitHub

	<?xml version="1.0" encoding="utf-8"?>
	<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	xmlns:tools="http://schemas.android.com/tools"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:orientation="vertical">

	<android.support.v7.widget.RecyclerView
	android:id="@+id/recyclerView"
	android:scrollbars="vertical"
	android:layout_width="match_parent"
	android:layout_height="match_parent"/>

	</LinearLayout>

view raw main_activity.xml hosted with ❤ by GitHub

	public class MainActivity extends Activity {
	private RecyclerView recyclerView;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.main_activity);

	String[] titles = {
	"Paulo",
	"Priscilla",
	"Gricelda",
	};

	recyclerView = (RecyclerView) findViewById(R.id.my_recycler_view);
	recyclerView.setHasFixedSize(true);
	recyclerView.setLayoutManager(new LinearLayoutManager(this));
	mRecyclerView.setAdapter(new CustomAdapter(titles));
	}
	}

view raw MainActivity.java hosted with ❤ by GitHub