练习使用XRecyclerView，可上拉下拉刷新。

 1 package com.lixu.testxrecyclerview;
 2 import android.support.v7.app.AppCompatActivity;
 3 import android.os.Bundle;
 4 import android.support.v7.widget.StaggeredGridLayoutManager;
 5 import android.view.LayoutInflater;
 6 import android.view.View;
 7 import android.view.ViewGroup;
 8 import android.widget.Toast;
 9 import com.jcodecraeer.xrecyclerview.XRecyclerView;
10
11 public class MainActivity extends AppCompatActivity {
12     private XRecyclerView mXRecyclerView;
13
14     @Override
15     protected void onCreate(Bundle savedInstanceState) {
16         super.onCreate(savedInstanceState);
17         setContentView(R.layout.activity_main);
18
19         int[] imgs = {R.drawable.img1, R.drawable.img2, R.drawable.img3, R.drawable.img4, R.drawable.img5, R.drawable.img6, R.drawable.img7, R.drawable.img8, R.drawable.img9, R.drawable.img10,
20                 R.drawable.img11, R.drawable.img12, R.drawable.img13, R.drawable.img14, R.drawable.img15, R.drawable.img16, R.drawable.img17, R.drawable.img18, R.drawable.img19, R.drawable.img20,
21                 R.drawable.meinv1, R.drawable.meinv2, R.drawable.meinv3, R.drawable.meinv4, R.drawable.meinv5, R.drawable.meinv6, R.drawable.meinv7, R.drawable.meinv8, R.drawable.meinv9, R.drawable.meinv10,
22                 R.drawable.meinv11, R.drawable.meinv12, R.drawable.meinv13, R.drawable.meinv14, R.drawable.meinv15, R.drawable.meinv16, R.drawable.meinv17, R.drawable.meinv18, R.drawable.meinv19, R.drawable.meinv20,
23         };
24
25         mXRecyclerView = (XRecyclerView) findViewById(R.id.xrecyclerview);
26         //新建瀑布流的布局
27         StaggeredGridLayoutManager sgm = new StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL);
28         //设置滑动方向
29         sgm.setOrientation(StaggeredGridLayoutManager.HORIZONTAL);
30         //设置布局
31         mXRecyclerView.setLayoutManager(sgm);
32         mXRecyclerView.setPullRefreshEnabled(true);
33         MyAdapter myAdapter= new MyAdapter(imgs,this);
34         mXRecyclerView.setAdapter(myAdapter);
35         //设置点击事件
36         myAdapter.setOnItemClickLitener(new MyAdapter.OnItemClickLitener() {
37             @Override
38             public void onitemclick(View view, int pos) {
39                 Toast.makeText(getApplicationContext(),"第"+pos+"被点击",Toast.LENGTH_SHORT).show();
40             }
41
42             @Override
43             public void onitemlongclick(View view, int pos) {
44                 Toast.makeText(getApplicationContext(),"第"+pos+"被长按",Toast.LENGTH_SHORT).show();
45             }
46         });
47         //添加头部
48         View header = LayoutInflater.from(this).inflate(R.layout.header, (ViewGroup) findViewById(android.R.id.content), false);
49         mXRecyclerView.addHeaderView(header);
50         //设置 上拉下拉刷新监听器
51         mXRecyclerView.setLoadingListener(new XRecyclerView.LoadingListener() {
52
53             @Override
54             public void onRefresh() {
55                 mXRecyclerView.refreshComplete();
56             }
57
58             @Override
59             public void onLoadMore() {
60                 mXRecyclerView.loadMoreComplete();
61             }
62         });
63
64     }
65
66
67
68 }

 1 package com.lixu.testxrecyclerview;
 2
 3 import android.content.Context;
 4 import android.graphics.BitmapFactory;
 5 import android.support.v7.widget.RecyclerView;
 6 import android.view.View;
 7 import android.view.ViewGroup;
 8 import android.widget.ImageView;
 9
10 import com.jcodecraeer.xrecyclerview.XRecyclerView;
11
12 /**
13  * Created by lixu on 2016/3/19.
14  */
15 class MyAdapter extends XRecyclerView.Adapter<MyAdapter.Myholder> {
16     private int[] data;
17     private Context context;
18     private BitmapFactory.Options otp;
19
20
21     public MyAdapter(int[] imgs, Context c) {
22         context = c;
23         data = imgs;
24         otp = new BitmapFactory.Options();
25     }
26
27     @Override
28     public Myholder onCreateViewHolder(ViewGroup parent, int viewType) {
29
30         View view = View.inflate(context, R.layout.item_list, null);
31
32         return new Myholder(view);
33     }
34
35     //设置回调接口
36     interface OnItemClickLitener {
37
38         void onitemclick(View view, int pos);
39
40         void onitemlongclick(View view, int pos);
41
42     }
43
44     private OnItemClickLitener onItemClickLitener;
45
46
47     public void setOnItemClickLitener(OnItemClickLitener onItemClickLitener) {
48         this.onItemClickLitener = onItemClickLitener;
49     }
50
51
52     @Override
53     public void onBindViewHolder(final Myholder holder, int position) {
54         //将本地图片改成bitmap图片
55         holder.iv.setImageBitmap(BitmapFactory.decodeStream(context.getResources().openRawResource(data[position]), null, otp));
56         // holder.iv.setImageResource(data[position]);
57         //设置点击事件
58         holder.iv.setOnClickListener(new View.OnClickListener() {
59             @Override
60             public void onClick(View v) {
61                 int pos = holder.getLayoutPosition();
62                 onItemClickLitener.onitemclick(holder.iv, pos);
63             }
64         });
65         //设置长按点击事件
66         holder.iv.setOnLongClickListener(new View.OnLongClickListener() {
67             @Override
68             public boolean onLongClick(View v) {
69                 int pos = holder.getLayoutPosition();
70                 onItemClickLitener.onitemlongclick(holder.iv, pos);
71                 return false;
72             }
73         });
74
75     }
76
77
78     @Override
79     public int getItemCount() {
80
81         return data.length;
82     }
83
84     public class Myholder extends RecyclerView.ViewHolder {
85         private ImageView iv;
86
87         public Myholder(View itemView) {
88             super(itemView);
89             iv = (ImageView) itemView.findViewById(R.id.iv);
90         }
91     }
92 }

xml：

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     xmlns:tools="http://schemas.android.com/tools"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent"
 6     tools:context="com.lixu.testxrecyclerview.MainActivity">
 7
 8    <com.jcodecraeer.xrecyclerview.XRecyclerView
 9        android:id="@+id/xrecyclerview"
10        android:layout_width="match_parent"
11        android:layout_height="match_parent"></com.jcodecraeer.xrecyclerview.XRecyclerView>
12 </RelativeLayout>

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent">
 5
 6     <ImageView
 7         android:id="@+id/header"
 8         android:layout_width="match_parent"
 9         android:layout_height="match_parent"
10         android:src="@drawable/meinv5"/>
11 </LinearLayout>

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     xmlns:cardview="http://schemas.android.com/apk/res-auto"
 6     android:orientation="vertical"
 7     android:padding="5dp">
 8
 9     <android.support.v7.widget.CardView
10         android:layout_width="match_parent"
11         android:layout_height="wrap_content"
12         cardview:cardElevation="3dp">
13
14         <ImageView
15             android:id="@+id/iv"
16             android:layout_width="match_parent"
17             android:layout_height="wrap_content"
18             android:padding="2dp"
19             android:src="@mipmap/ic_launcher" />
20
21     </android.support.v7.widget.CardView>
22
23 </LinearLayout>