RecyclerView-------MainActivity代码

package com.example.administrator.recyclerview;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.DefaultItemAnimator;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.StaggeredGridLayoutManager;
import android.view.View;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity {
    RecyclerView mRecyclerView;
    MyAdapter adapter;
    Dates dates;
    List<Dates> mDate;
    int[] imageId={R.mipmap.love_card_avar,R.mipmap.love_card_img1,
            R.mipmap.love_card_img2,R.mipmap.love_card_img3,R.mipmap.love_card_img4
            ,R.mipmap.love_card_img5
    };
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
//        初始化对象，实现绑定
        mRecyclerView= (RecyclerView) findViewById(R.id.recyclerView);
        initDates();
//        创建数据源
        adapter=new MyAdapter(MainActivity.this,mDate);
//        使用adapter来设置点击事件，由于点击事件是在MyAdapter中定义的所以要由MyAdapter的对象来调用
        adapter.setOnRecyclerViewItemClickListener(new MyAdapter.OnRecyclerViewItemClickListener() {
            @Override
            public void OnItem(View view, int position) {
                Toast.makeText(MainActivity.this, "item点击事件", Toast.LENGTH_SHORT).show();

            }
        });
//        设置适配器
        mRecyclerView.setAdapter(adapter);
//        设置横向滑动的item 用LinearLayoutManager.HORIZONTAL
//        GridLayoutManager(this,2, LinearLayoutManager.HORIZONTAL,false)中
//        GridLayoutManager layoutManager=new GridLayoutManager(this,2, LinearLayoutManager.HORIZONTAL,false);
//        设置垂直滑动的item用LinearLayoutManager.VERTICAL，参数列表含义：本类即上下文，排列行数或者列数，排列类型，false
//        GridLayoutManager layoutManager=new GridLayoutManager(this,3,LinearLayoutManager.VERTICAL,false);
//        LinearLayoutManager效果如同ListView的展示效果单行或者单列，参数列表含义：上下文即本类，排列类型，false
//        LinearLayoutManager layoutManager=new LinearLayoutManager(this,LinearLayoutManager.HORIZONTAL,false);
//        StaggeredGridLayoutManager为瀑布流的布局管理工具，参数列表的含义：列数或者行数，排列类型
        StaggeredGridLayoutManager layoutManager=new StaggeredGridLayoutManager(2,LinearLayoutManager.VERTICAL);

// RecycleView中onCreateViewHolder并没有将item填充到页面中，还需要调用 setLayoutManager（）；方法是将item填充到页面
        mRecyclerView.setLayoutManager(layoutManager);
//        设置增删除item的动画
        mRecyclerView.setItemAnimator(new DefaultItemAnimator());
//        设置线型
        mRecyclerView.addItemDecoration(new DividerItemDecoration(this,DividerItemDecoration.HORIZONTAL_LIST));
        mRecyclerView.addItemDecoration(new DividerItemDecoration(this,DividerItemDecoration.VERTICAL_LIST));

    }
//    设置数据源，用for循环的方法创建集合的数据源
    public void initDates(){
        mDate=new  ArrayList<>();
        for (int i=0;i<6;i++){
            dates=new Dates(imageId[i]);
            mDate.add(dates);
        }
    }
}