Place RecyclerView in layout XML

Last example show RecyclerView by calling setContentView() using Java code. Here show how to place RecyclerView in layout XML.


Modify layout XML, layout/activity_main.xml, to place <android.support.v7.widget.RecyclerView>

<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="match_parent"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    tools:context=".MainActivity"
    android:orientation="vertical">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center_horizontal"
        android:autoLink="web"
        android:text="http://android-er.blogspot.com/"
        android:textStyle="bold" />

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

</LinearLayout>

Modify com.example.androidrecyclerview.MainActivity.java to call setContentView(R.layout.activity_main) and load myRecyclerView = (RecyclerView)findViewById(R.id.myrecyclerview).

package com.example.androidrecyclerview;

import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity implements RecyclerViewAdapter.OnItemClickListener{

    private RecyclerView myRecyclerView;
    private LinearLayoutManager linearLayoutManager;
    private RecyclerViewAdapter myRecyclerViewAdapter;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        myRecyclerView = (RecyclerView)findViewById(R.id.myrecyclerview);

        linearLayoutManager =
                new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false);
        /*
        linearLayoutManager =
                new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false);
        */

        myRecyclerViewAdapter = new RecyclerViewAdapter(this);
        myRecyclerViewAdapter.setOnItemClickListener(this);
        myRecyclerView.setAdapter(myRecyclerViewAdapter);
        myRecyclerView.setLayoutManager(linearLayoutManager);

        //insert dummy items
        myRecyclerViewAdapter.add(0, "Eric");
        myRecyclerViewAdapter.add(1, "Android");
        myRecyclerViewAdapter.add(0, "Android-er");
        myRecyclerViewAdapter.add(2, "Google");
        myRecyclerViewAdapter.add(3, "android dev");
        myRecyclerViewAdapter.add(0, "android-er.blogspot.com");
        myRecyclerViewAdapter.add(4, "Peter");
        myRecyclerViewAdapter.add(4, "Paul");
        myRecyclerViewAdapter.add(4, "Mary");
        myRecyclerViewAdapter.add(4, "May");
        myRecyclerViewAdapter.add(4, "Divid");
        myRecyclerViewAdapter.add(4, "Frankie");
    }

    @Override
    public void onItemClick(RecyclerViewAdapter.ItemHolder item, int position) {
        Toast.makeText(this,
                position + " : " + item.getItemName(),
                Toast.LENGTH_SHORT).show();
    }
}

Other files, RecyclerViewAdapter.java and layout_item.xml, refer last exercise of Simple RecyclerView example.

Next:
- Add and remove items to RecyclerView, with default animation