RecyclerView Staggered Layout Example in Android

Add Library into build.gradle Using app folder

    compile 'com.android.support:recyclerview-v7:26+'

MainActivity.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:orientation="vertical"
    tools:context="com.example.bhaumik.recyclerviewstaggeredlayout.MainActivity">

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

</LinearLayout>

item_row.xml

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

    <ImageView
        android:id="@+id/image_view"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
</LinearLayout>

MainActivity.java

package com.example.bhaumik.recyclerviewstaggeredlayout;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.StaggeredGridLayoutManager;

public class MainActivity extends AppCompatActivity {

    MyAdapter adapter;

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

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

        recyclerView.setLayoutManager(new StaggeredGridLayoutManager(3,
                StaggeredGridLayoutManager.VERTICAL));

        adapter = new MyAdapter();
        recyclerView.setAdapter(adapter);
    }
}

MyAdapter.java

package com.example.bhaumik.recyclerviewstaggeredlayout;

import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;

/**
 * Created by Bhaumik on 8/29/2017.
 */

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyHolder>{

    int img[] = {R.drawable.m1,R.drawable.m2,R.drawable.m3,R.drawable.m4,R.drawable.m5};


    @Override
    public MyHolder onCreateViewHolder(ViewGroup parent, int viewType) {

        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.item_row,parent,false);

        return new MyHolder(view);
    }

    @Override
    public void onBindViewHolder(MyHolder holder, int position) {

        holder.imageView.setImageResource(img[position]);

    }

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

    public static class MyHolder extends RecyclerView.ViewHolder{

        ImageView imageView;

        public MyHolder(View itemView) {
            super(itemView);

            imageView = itemView.findViewById(R.id.image_view);
        }
    }
}