ExpandableActivity.java

package com.lzx.demo.multitype;

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

import com.github.jdsjlzx.ItemDecoration.DividerDecoration;
import com.github.jdsjlzx.recyclerview.LRecyclerView;
import com.github.jdsjlzx.recyclerview.LRecyclerViewAdapter;
import com.lzx.demo.R;
import com.lzx.demo.adapter.ExpandableItemAdapter;
import com.lzx.demo.bean.Level0Item;
import com.lzx.demo.bean.Level1Item;
import com.lzx.demo.bean.MultiItemEntity;
import com.lzx.demo.bean.Person;
import com.lzx.demo.view.SampleHeader;

import java.util.ArrayList;
import java.util.Random;

/**
 *
 * 带HeaderView、FooterView的LinearLayout RecyclerView
 */
public class ExpandableActivity extends AppCompatActivity {

    private LRecyclerView mRecyclerView = null;

    private ExpandableItemAdapter mDataAdapter = null;

    private LRecyclerViewAdapter mLRecyclerViewAdapter = null;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.sample_ll_activity);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        mRecyclerView = (LRecyclerView) findViewById(R.id.list);


        mDataAdapter = new ExpandableItemAdapter(this);
        mDataAdapter.setDataList(generateData());

        mLRecyclerViewAdapter = new LRecyclerViewAdapter(mDataAdapter);
        mRecyclerView.setAdapter(mLRecyclerViewAdapter);

        DividerDecoration divider = new DividerDecoration.Builder(this)
                .setHeight(R.dimen.default_divider_height)
                .setPadding(R.dimen.default_divider_padding)
                .setColorResource(R.color.split)
                .build();
        //mRecyclerView.setHasFixedSize(true);
        mRecyclerView.addItemDecoration(divider);

        mRecyclerView.setLayoutManager(new LinearLayoutManager(this));

        //add a HeaderView
        View header = LayoutInflater.from(this).inflate(R.layout.sample_header,(ViewGroup)findViewById(android.R.id.content), false);

        mLRecyclerViewAdapter.addHeaderView(header);
        mLRecyclerViewAdapter.addHeaderView(new SampleHeader(this));

        //禁用下拉刷新功能
        mRecyclerView.setPullRefreshEnabled(false);

        //禁用自动加载更多功能
        //mRecyclerView.setLoadMoreEnabled(false);

        //add a FooterView
        //mLRecyclerViewAdapter.addFooterView(sampleFooter);

    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (item.getItemId() == android.R.id.home) {
            finish();
        }
        return true;
    }

    private ArrayList<MultiItemEntity> generateData() {
        int lv0Count = 9;
        int lv1Count = 3;
        int personCount = 5;

        String[] nameList = {"Bob", "Andy", "Lily", "Brown", "Bruce"};
        Random random = new Random();

        ArrayList<MultiItemEntity> res = new ArrayList<>();
        for (int i = 0; i < lv0Count; i++) {
            Level0Item lv0 = new Level0Item("This is " + i + "th item in Level 0", "subtitle of " + i);
            for (int j = 0; j < lv1Count; j++) {
                Level1Item lv1 = new Level1Item("Level 1 item: " + j, "(no animation)");
                for (int k = 0; k < personCount; k++) {
                    lv1.addSubItem(new Person(nameList[k], random.nextInt(40)));
                }
                lv0.addSubItem(lv1);
            }
            res.add(lv0);
        }
        return res;
    }

}