RecyclerViewSample.java

package com.marshalchen.common.demoofui.sampleModules;

import android.app.Activity;
import android.os.Bundle;
import android.support.v4.view.GestureDetectorCompat;
import android.support.v7.widget.DefaultItemAnimator;
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 com.marshalchen.common.demoofui.R;

/**
 * Created by cym on 14-10-20.
 */
public class RecyclerViewSample extends Activity {
    private RecyclerView mRecyclerView;
    private RecyclerView.Adapter mAdapter;
    private RecyclerView.LayoutManager mLayoutManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.recycler_view_sample);
        mRecyclerView = (RecyclerView) findViewById(R.id.recycler_view);

        // use this setting to improve performance if you know that changes
        // in content do not change the layout size of the RecyclerView
        mRecyclerView.setHasFixedSize(true);

        // use a linear layout manager
        mLayoutManager = new LinearLayoutManager(this);
        mRecyclerView.setLayoutManager(mLayoutManager);

        // specify an adapter (see also next example)
        String[] mDataset = new String[4];
        for (int i = 0; i < 4; i++) {
            mDataset[i] = i + "hh";
        }
        mAdapter = new MyAdapter(mDataset);
        mRecyclerView.setAdapter(mAdapter);
        LinearLayoutManager layoutManager = new LinearLayoutManager(this);

        layoutManager.setOrientation(LinearLayoutManager.VERTICAL);

        layoutManager.scrollToPosition(0);

        mRecyclerView.setLayoutManager(layoutManager);
//        RecyclerView.ItemDecoration itemDecoration =
//        new DividerItemDecoration(this, DividerItemDecoration.VERTICAL_LIST);
//        mRecyclerView.addItemDecoration(itemDecoration);

// this is the default;
// this call is actually only necessary with custom ItemAnimators
        mRecyclerView.setItemAnimator(new DefaultItemAnimator());

// onClickDetection is done in this Activity's OnItemTouchListener
// with the help of a GestureDetector;
// Tip by Ian Lake on G+ in a comment to this post:
// https://plus.google.com/+LucasRocha/posts/37U8GWtYxDE
//        mRecyclerView.addOnItemTouchListener(this);
//        gesturedetector =
//        new GestureDetectorCompat(this, new RecyclerViewDemoOnGestureListener());



    }


}

class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
    private String[] mDataset;

    // Provide a reference to the views for each data item
    // Complex data items may need more than one view per item, and
    // you provide access to all the views for a data item in a view holder
    public static class ViewHolder extends RecyclerView.ViewHolder {
        // each data item is just a string in this case
        public TextView mTextView;

        public ViewHolder(View v) {
            super(v);
            mTextView = (TextView) v.findViewById(R.id.list_item_text);
        }
    }

    // Provide a suitable constructor (depends on the kind of dataset)
    public MyAdapter(String[] myDataset) {
        mDataset = myDataset;
    }

    // Create new views (invoked by the layout manager)
    @Override
    public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent,
                                                   int viewType) {
        // create a new view
        View v = LayoutInflater.from(parent.getContext())
                .inflate(R.layout.android_animations_item, parent, false);
        // set the view's size, margins, paddings and layout parameters

        ViewHolder vh = new ViewHolder(v);
        return vh;
    }

    // Replace the contents of a view (invoked by the layout manager)
    @Override
    public void onBindViewHolder(ViewHolder holder, int position) {
        // - get element from your dataset at this position
        // - replace the contents of the view with that element
        holder.mTextView.setText(mDataset[position]);

    }

    // Return the size of your dataset (invoked by the layout manager)
    @Override
    public int getItemCount() {
        return mDataset.length;
    }
}