How to add Recyclerview in android

- Add following line in build.gradle

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

- Add following line in main.xml
 <LinearLayout
    android:layout_width="fill_parent"
    android:layout_height="wrap_content">

    <android.support.v7.widget.RecyclerView
       android:id="@+id/recycle_home_work"
       android:layout_width="fill_parent"
       android:layout_height="wrap_content">
    </android.support.v7.widget.RecyclerView>
 </LinearLayout>

- Add following code in MainActivity.class

  RecyclerView recycle_test = (RecyclerView) findViewById(R.id.recycle_test);
  //For Linear Layout Manager for only Listview(Item in List)
  TestAdapter testAdapter = new TestAdapter(TestActivity.this, list_array);
  LinearLayoutManager llm = new LinearLayoutManager(TestActivity.this);
  llm.setOrientation(LinearLayoutManager.VERTICAL);
  recycle_test.setLayoutManager(llm);
  recycle_test.setAdapter(testAdapter);
  testAdapter.notifyDataSetChanged();

  //For Layout Manager for only Gridview(Item in Grid)
  TestAdapter testAdapter = new TestAdapter(TestActivity.this, list_array);
  RecyclerView.LayoutManager mLayoutManager = new GridLayoutManager (TestActivity.this, 2);
  recycle_test.setLayoutManager(mLayoutManager);
  recycle_test.setAdapter(testAdapter);
  testAdapter.notifyDataSetChanged();


//Adapter
public class TestAdapter extends RecyclerView.Adapter<TestAdapter.MyViewHolder> {
        public Context context;
        List<PhotoResponseData> array_list;

        public TestAdapter(Context context, List<PhotoResponseData> array_list) {
            this.context = context;
            this.array_list = array_list;
        }

        @Override
        public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            View itemView = LayoutInflater.from(parent.getContext())
                    .inflate(R.layout.text_photo, parent, false);

            final MyViewHolder holder = new MyViewHolder(itemView);
            return new MyViewHolder(itemView);
        }

        @Override
        public void onBindViewHolder(final MyViewHolder holder, final int position) {
            String image = array_list.get(position).getImagename();
            if (image != null && !image.isEmpty()) {
                Picasso.with(context).load(AppConstant.TAG_Image_Photo + image).placeholder(R.mipmap.ic_launcher).into(holder.image_photo);
            } else {
                holder.image_photo.setImageResource(R.mipmap.ic_launcher);
            }
        }

        @Override
        public int getItemCount() {
            return array_list.size();
        }

        @Override
        public int getItemViewType(int position) {
            return position;
        }

        public class MyViewHolder extends RecyclerView.ViewHolder {
            ImageView image_photo;
            public MyViewHolder(View convertView) {
                super(convertView);
                image_photo = (ImageView) convertView.findViewById(R.id.image_photo);
            }

        }
    }