Android RecyclerView设置分割线 / 下拉加载 / 选项菜单进行增加删除动画

首先看一下我的整个程序:

主类:

package com.example.day02rk;

import android.os.Bundle;
import android.support.v4.content.ContextCompat;
import android.support.v4.widget.SwipeRefreshLayout;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.DefaultItemAnimator;
import android.support.v7.widget.DividerItemDecoration;
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.util.Log;
import android.view.Menu;
import android.view.MenuItem;

import com.example.day02rk.MyAdapter.MyRecyclerView;
import com.example.day02rk.ziyuan.PersonInfo;
import com.google.gson.Gson;

import java.io.IOException;
import java.util.List;

import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.Response;
import okhttp3.ResponseBody;

public class MainActivity extends AppCompatActivity {

    private RecyclerView recyclerView_id;
    private String url = "http://www.qubaobei.com/ios/cf/dish_list.php?stage_id=1&limit=20&page=";
    private int n = 1;
    private MyRecyclerView myRecyclerView;
    private SwipeRefreshLayout swipeRefreshLayout;

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

    }

    //选项菜单
    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.item, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int itemId = item.getItemId();
        switch (itemId) {
            case R.id.add:
                myRecyclerView.addData(2);
                break;
            case R.id.delete:
                myRecyclerView.deleteData(3);
                break;
        }
        return true;
    }

    //使用okhttp进行解析
    public void jx() {
        OkHttpClient okHttpClient = new OkHttpClient();
        Request request = new Request.Builder().get().url(url + n).build();
        okHttpClient.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                Log.e("hh", "失败");
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                ResponseBody body = response.body();
                byte[] bytes = body.bytes();
                String string = new String(bytes);

                Log.e("hh", string);

                //gson解析对象
                Gson gson = new Gson();
                PersonInfo personInfo = gson.fromJson(string, PersonInfo.class);
                List<PersonInfo.DataBean> data = personInfo.getData();

                Log.e("hh", personInfo.toString());
                Log.e("hh", data.toString());

                myRecyclerView = new MyRecyclerView(MainActivity.this, data);
                runOnUiThread(new Runnable() {
                    @Override
                    public void run() {
                        recyclerView_id.setAdapter(myRecyclerView);
                    }
                });

            }
        });
    }

    private void initView() {
        recyclerView_id = (RecyclerView) findViewById(R.id.recyclerView_id);

        //网格布局管理器
        GridLayoutManager gridLayoutManager = new GridLayoutManager(MainActivity.this, 3);
        //线性布局管理器
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
        //瀑布布局管理器
        StaggeredGridLayoutManager staggeredGridLayoutManager = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL);

        recyclerView_id.setLayoutManager(gridLayoutManager);

        //这个就是设置增加或者删除的时候渐变的过程(虽然感觉没什么明显的效果)
        DefaultItemAnimator defaultItemAnimator = new DefaultItemAnimator();
        recyclerView_id.setItemAnimator(defaultItemAnimator);

        //系统默认分割线
//        recyclerView_id.addItemDecoration(new DividerItemDecoration(MainActivity.this,DividerItemDecoration.VERTICAL));

        //网格设置分割线(自定义分割线)
        DividerItemDecoration dividerItemDecoration = new DividerItemDecoration(MainActivity.this, DividerItemDecoration.VERTICAL);
        dividerItemDecoration.setDrawable(ContextCompat.getDrawable(this, R.drawable.fgx));
        recyclerView_id.addItemDecoration(dividerItemDecoration);

        //可以下拉加载更多
        swipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipeRefreshLayout);
        swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                n++;
                jx();
                swipeRefreshLayout.setRefreshing(false);
            }
        });
    }

}

主布局:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">

    <android.support.v4.widget.SwipeRefreshLayout
        android:id="@+id/swipeRefreshLayout"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <android.support.v7.widget.RecyclerView
            android:id="@+id/recyclerView_id"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

        </android.support.v7.widget.RecyclerView>

    </android.support.v4.widget.SwipeRefreshLayout>

</LinearLayout>

MyRecyclerView:

package com.example.day02rk.MyAdapter;


import android.content.Context;
import android.support.annotation.NonNull;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;

import com.example.day02rk.MainActivity;
import com.example.day02rk.R;
import com.example.day02rk.ziyuan.PersonInfo;
import com.squareup.picasso.Picasso;

import java.util.List;

public class MyRecyclerView extends RecyclerView.Adapter<MyViewHolder> {

    private Context context;
    private List<PersonInfo.DataBean> data;

    public MyRecyclerView(Context context, List<PersonInfo.DataBean> data) {
        this.context = context;
        this.data = data;
    }

    public void addData(int position) {
        PersonInfo.DataBean dataBean=new PersonInfo.DataBean();
        dataBean.setPic(data.get(0).getPic());
        dataBean.setTitle("新增加的标题");
        data.add(position,dataBean);
        notifyItemInserted(position);
    }

    public void deleteData(int position) {
        data.remove(position);
        notifyItemRemoved(position);
    }

    //创建视图,并且返回viewholder
    @NonNull
    @Override
    public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(context).inflate(R.layout.shipei, null);
        MyViewHolder myViewHolder = new MyViewHolder(view);
        return myViewHolder;
    }

    //接受返回回来的viewholder
    @Override
    public void onBindViewHolder(@NonNull final MyViewHolder holder, int position) {

        //点击Recyclerview中item,用Toast展示当前item的内容
        holder.textView_shipei.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Toast.makeText(context, holder.textView_shipei.getText(), Toast.LENGTH_SHORT).show();
            }
        });

        Picasso.with(context).load(data.get(position).getPic()).into(holder.imageView_shipei);
        holder.textView_shipei.setText(data.get(position).getTitle());
    }

    //条目个数
    @Override
    public int getItemCount() {
        return data.size();
    }
}

MyViewHolder:

package com.example.day02rk.MyAdapter;

import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;

import com.example.day02rk.R;

class MyViewHolder extends RecyclerView.ViewHolder {
    public ImageView imageView_shipei;
    public TextView textView_shipei;

    public MyViewHolder(View itemView) {
        super(itemView);

        imageView_shipei = itemView.findViewById(R.id.imageView_shipei);
        textView_shipei = itemView.findViewById(R.id.textView_shipei);
    }
}

PersonInfo:

package com.example.day02rk.ziyuan;

import java.util.List;

public class PersonInfo {

    /**
     * ret : 1
     * data : [{"id":"8289","title":"油焖大虾","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/9/8289.jpg","collect_num":"1662","food_str":"大虾 葱 生姜 植物油 料酒","num":1662},{"id":"2127","title":"四川回锅肉","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/3/2127.jpg","collect_num":"1590","food_str":"猪肉 青蒜 青椒 红椒 姜片","num":1590},{"id":"30630","title":"超简单芒果布丁","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/31/30630.jpg","collect_num":"1535","food_str":"QQ糖 牛奶 芒果","num":1535},{"id":"9073","title":"家常红烧鱼","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/10/9073.jpg","collect_num":"1421","food_str":"鲜鱼 姜 葱 蒜 花椒","num":1421},{"id":"10097","title":"家常煎豆腐","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/11/10097.jpg","collect_num":"1414","food_str":"豆腐 新鲜红椒 青椒 葱花 油","num":1414},{"id":"10509","title":"水煮肉片","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/11/10509.jpg","collect_num":"1339","food_str":"瘦猪肉 生菜 豆瓣酱 干辣椒 花椒","num":1339},{"id":"46968","title":"红糖苹果银耳汤","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/47/46968.jpg","collect_num":"1251","food_str":"银耳 苹果 红糖","num":1251},{"id":"10191","title":"麻婆豆腐","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/11/10191.jpg","collect_num":"1217","food_str":"豆腐 肉末 生抽 白糖 芝麻油","num":1217},{"id":"2372","title":"皮蛋瘦肉粥","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/3/2372.jpg","collect_num":"1149","food_str":"大米 皮蛋 猪肉 油条 香葱","num":1149},{"id":"2166","title":"蚂蚁上树","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/3/2166.jpg","collect_num":"1143","food_str":"红薯粉 肉 姜 蒜 花椒","num":1143},{"id":"2262","title":"糖醋肉","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/3/2262.jpg","collect_num":"1076","food_str":"猪肉 红椒 黄椒 洋葱 蛋清","num":1076},{"id":"9971","title":"鱼香豆腐","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/10/9971.jpg","collect_num":"1008","food_str":"豆腐 木耳 胡萝卜 香葱 番茄酱","num":1008},{"id":"10172","title":"干煸四季豆","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/11/10172.jpg","collect_num":"990","food_str":"四季豆 干辣椒 蒜头 酱油 糖","num":990},{"id":"2685","title":"胡萝卜肉末蒸蛋","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/3/2685.jpg","collect_num":"923","food_str":"胡萝卜 肉 蛋 生抽 盐","num":923},{"id":"9972","title":"虎皮青椒","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/10/9972.jpg","collect_num":"891","food_str":"青辣椒 大蒜 香醋 白糖 生抽","num":891},{"id":"10437","title":"叉烧排骨","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/11/10437.jpg","collect_num":"799","food_str":"排骨 李锦记叉烧酱 植物油 清水 油菜","num":799},{"id":"2892","title":"\u201c五行\u201d彩蔬汤","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/3/2892.jpg","collect_num":"758","food_str":"黑木耳 玉米 牛蒡 胡萝卜 西兰花","num":758},{"id":"33783","title":"美人豆浆","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/34/33783.jpg","collect_num":"755","food_str":"黄豆 红豆 绿豆 黑豆 黑米","num":755},{"id":"2348","title":"麻辣肉丝面","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/3/2348.jpg","collect_num":"755","food_str":"面条 肉丝 淀粉 酱油 辣椒","num":755},{"id":"10044","title":"土豆炖翅根","pic":"http://www.qubaobei.com/ios/cf/uploadfile/132/11/10044.jpg","collect_num":"753","food_str":"土豆 翅根 葱 姜 料酒","num":753}]
     */

    private int ret;
    private List<DataBean> data;

    @Override
    public String toString() {
        return "Foods{" +
                "ret=" + ret +
                ", data=" + data +
                '}';
    }

    public int getRet() {
        return ret;
    }

    public void setRet(int ret) {
        this.ret = ret;
    }

    public List<DataBean> getData() {
        return data;
    }

    public void setData(List<DataBean> data) {
        this.data = data;
    }

    public static class DataBean {
        /**
         * id : 8289
         * title : 油焖大虾
         * pic : http://www.qubaobei.com/ios/cf/uploadfile/132/9/8289.jpg
         * collect_num : 1662
         * food_str : 大虾 葱 生姜 植物油 料酒
         * num : 1662
         */

        private String id;
        private String title;
        private String pic;
        private String collect_num;
        private String food_str;
        private int num;

        @Override
        public String toString() {
            return "DataBean{" +
                    "id='" + id + '\'' +
                    ", title='" + title + '\'' +
                    ", pic='" + pic + '\'' +
                    ", collect_num='" + collect_num + '\'' +
                    ", food_str='" + food_str + '\'' +
                    ", num=" + num +
                    '}';
        }

        public String getId() {
            return id;
        }

        public void setId(String id) {
            this.id = id;
        }

        public String getTitle() {
            return title;
        }

        public void setTitle(String title) {
            this.title = title;
        }

        public String getPic() {
            return pic;
        }

        public void setPic(String pic) {
            this.pic = pic;
        }

        public String getCollect_num() {
            return collect_num;
        }

        public void setCollect_num(String collect_num) {
            this.collect_num = collect_num;
        }

        public String getFood_str() {
            return food_str;
        }

        public void setFood_str(String food_str) {
            this.food_str = food_str;
        }

        public int getNum() {
            return num;
        }

        public void setNum(int num) {
            this.num = num;
        }
    }
}

shipei:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    android:orientation="vertical"
    xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:id="@+id/imageView_shipei"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
    <TextView
        android:id="@+id/textView_shipei"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content" />
</LinearLayout>

menu->item:

<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
    <item
        android:id="@+id/add"
        android:title="增加动画">

    </item>
    <item
        android:id="@+id/delete"
        android:title="删除动画">

    </item>
</menu>

fgx:

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">

    <gradient
        android:centerColor="@color/colorPrimary"
        android:endColor="@color/colorPrimaryDark"
        android:startColor="@color/colorAccent">

    </gradient>
    <size android:height="6dp">

    </size>
</shape>

                                                                                     整个程序完毕.

   设置分割线:

下拉加载更多:

选项菜单增加删除动画: