package com.xeronith.temp;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import java.util.Locale;

public class MainActivity extends AppCompatActivity {

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

        final RecyclerView recyclerView = findViewById(R.id.recycler_view);
        recyclerView.setLayoutManager(new LinearLayoutManager(this));
        recyclerView.setAdapter(new SampleAdapter());
        recyclerView.scrollToPosition(10);
    }

    class SampleAdapter extends RecyclerView.Adapter<SampleAdapter.ViewHolder> {

        @Override
        public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
            LayoutInflater inflater = LayoutInflater.from(parent.getContext());
            View view = inflater.inflate(R.layout.recycler_view_item, parent, false);
            return new ViewHolder(view);
        }

        @Override
        public void onBindViewHolder(ViewHolder viewHolder, int position) {
            viewHolder.setItem(String.format(Locale.US, "Item %d", position + 1));
        }

        @Override
        public int getItemCount() {
            return 50;
        }

        class ViewHolder extends RecyclerView.ViewHolder {
            private TextView textView;

            ViewHolder(View view) {
                super(view);
                textView = (TextView) view;
            }

            void setItem(String item) {
                textView.setText(item);
            }
        }
    }
}