Recyclerview spaning in android

Recyclerview provide many functionality  like add diffrent type view and spaning and decoration so in this blog we are learn about recyclerview spaning.


MainActivity.java

package com.samset.recyclerviewspaning;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.support.v7.widget.GridLayoutManager;

import android.support.v7.widget.RecyclerView;

public class MainActivity extends AppCompatActivity {

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recycler_view);

        recyclerView.addItemDecoration(new MarginDecoration(this));

        recyclerView.setHasFixedSize(true);

        // now define span count

        GridLayoutManager manager = new GridLayoutManager(this, 4);

        manager.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {

            @Override

            public int getSpanSize(int position) {

                // you can change span count

                return (4 - position % 4);

            }

        });

        recyclerView.setLayoutManager(manager);

        recyclerView.setAdapter(new ItemAdapter(30));

    }

}

activitymain.xml

<?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"

    tools:context="com.samset.recyclerviewspaning.MainActivity">

    <android.support.v7.widget.RecyclerView

        android:id="@+id/recycler_view"

        android:layout_width="match_parent"

        android:layout_height="match_parent"/>

</android.support.constraint.ConstraintLayout>

Thank you 

FullSorceCodeRecyclerviewSpanning

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