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.example.administrator.mydemo.PullActivity">
7 <android.support.v4.widget.SwipeRefreshLayout
8 android:id="@+id/mpull"
9 android:layout_height="match_parent"
10 android:layout_width="match_parent"
11 >
12 <ListView
13 android:id="@+id/mlist"
14 android:layout_width="match_parent"
15 android:layout_height="match_parent">
16 </ListView>
17
18 </android.support.v4.widget.SwipeRefreshLayout>
19
20
21 </RelativeLayout>
1 import android.os.Handler;
2 import android.os.Message;
3 import android.support.v4.widget.SwipeRefreshLayout;
4 import android.support.v7.app.AppCompatActivity;
5 import android.os.Bundle;
6 import android.widget.ListView;
7 import android.widget.SimpleAdapter;
8 import android.widget.Toast;
9
10 import java.util.ArrayList;
11 import java.util.HashMap;
12 import java.util.List;
13 import java.util.Map;
14
15 public class PullActivity extends AppCompatActivity {
16 private SwipeRefreshLayout swipeRefreshLayout;
17 private ListView listView;
18 private List list;
19 private SimpleAdapter simpleAdapter;
20
21 @Override
22 protected void onCreate(Bundle savedInstanceState) {
23 super.onCreate(savedInstanceState);
24 setContentView(R.layout.activity_pull);
25 initView();
26 setList();
27 }
28
29 private void initView(){
30 swipeRefreshLayout= (SwipeRefreshLayout) findViewById(R.id.mpull);
31 swipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
32 @Override
33 public void onRefresh() {
34 //
35 new Handler().postDelayed(new Thread(new Runnable() {
36 @Override
37 public void run() {
38 swipeRefreshLayout.setRefreshing(false);
39
40 //刷新之后发送message
41 Message msg=new Message();
42 msg.what=1;
43 mhandle.sendMessage(msg);
44
45 }
46 }),3000);
47 }
48 });
49 listView= (ListView) findViewById(R.id.mlist);
50 }
51 private Handler mhandle=new Handler(){
52 @Override
53 public void handleMessage(Message msg) {
54 super.handleMessage(msg);
55 if (msg.what==1){
56 Toast.makeText(getApplicationContext(),"刷新成功！",Toast.LENGTH_SHORT).show();
57 //下拉之后需要加载的数据
58 List mlist=new ArrayList();
59 for (int i=0;i<20;i++){
60 Map map=new HashMap();
61 map.put("img",R.drawable.img);
62 map.put("text","下拉数据"+i);
63 mlist.add(map);
64 }
65 list.addAll(mlist);
66 simpleAdapter.notifyDataSetChanged();
67 }
68 }
69 };
70 private void setList(){
71 list=new ArrayList();
72 for (int i=0;i<20;i++){
73 Map map=new HashMap();
74 map.put("img",R.drawable.img);
75 map.put("text","新数据"+i);
76 list.add(map);
77 }
78 simpleAdapter=new SimpleAdapter(this,list,R.layout.list_item,new String[]{"img","text"},new int[]{R.id.my_img,R.id.my_item});
79 listView.setAdapter(simpleAdapter);
80 }
81 }
