編輯：關於android開發
項目中上拉刷新和下拉加載一直都是比較常見的；以前一般都是重寫ListView或直接用PullToRefreshListView的框架；最近嘗試用RecyclerView來實現下拉加載上拉刷新也是不錯的。
如圖是Demo的效果圖：
第一個效果圖是用RecyclerView實現加的幾個靜態數據；
第二個是參考別人寫的RefreshRecyclerView來實現上拉刷新下拉加載；我只是把他的靜態數據改成網絡的數據；不過原先那個有點問題我發現在2次以上的刷新加載後布局會混亂刷新的item竟然復制了一份漂浮在界面上方跟著屏幕一起在滑動！感覺蠻好玩的
第三個是用的PullToRefreshListView來實現的數據和第二個一樣都是網絡接數據
demo的下載地址：http://download.csdn.net/detail/qq_29774291/9648634
如下是主要代碼
1 package com.item.my.jiejie.activity;
2
3 import java.util.ArrayList;
4 import java.util.List;
5 import com.item.my.jiejie.R;
6 import com.item.my.jiejie.adpter.MyAdapterThree;
7 import com.item.my.jiejie.adpter.MyAdapterThree.OnItemClickListener;
8 import com.item.my.jiejie.view.DividerItemDecoration;
9 import android.app.Activity;
10 import android.os.Bundle;
11 import android.support.v7.widget.DefaultItemAnimator;
12 import android.support.v7.widget.LinearLayoutManager;
13 import android.support.v7.widget.RecyclerView;
14 import android.widget.Toast;
15
16 /**
17 * 用RecyclerView實現
18 * @author Administrator
19 *
20 */
21 public class MyRecyleActivity extends Activity{
22 private RecyclerView mRecyclerView;
23 private List<String> mDataStrings;
24 private MyAdapterThree adapter;
25 @Override
26 protected void onCreate(Bundle savedInstanceState) {
27 // TODO Auto-generated method stub
28 super.onCreate(savedInstanceState);
29 setContentView(R.layout.activity_myrecyle);
30 initData();
31 mRecyclerView = (RecyclerView)findViewById(R.id.my_recyler);
32 mRecyclerView.setLayoutManager(new LinearLayoutManager(this));
33 adapter = new MyAdapterThree(this, mDataStrings);
34 mRecyclerView.setAdapter(adapter);
35 //即給RecyclerView添加分隔線
36 mRecyclerView.addItemDecoration(new DividerItemDecoration(MyRecyleActivity.this, LinearLayoutManager.VERTICAL));
37 //設置RecyclerView添加或刪除條目的動畫
38 mRecyclerView.setItemAnimator(new DefaultItemAnimator());
39 //給RecyclerView設置點擊事件
40 adapter.setOnItemClickListener(new OnItemClickListener() {
41
42 @Override
43 public void onLongClick(int position) {
44 // TODO Auto-generated method stub
45 Toast.makeText(MyRecyleActivity.this, "onLongClick你點擊了：" + position, Toast.LENGTH_SHORT).show();
46 }
47
48 @Override
49 public void onClick(int position) {
50 // TODO Auto-generated method stub
51 Toast.makeText(MyRecyleActivity.this, "onClick 你點擊了：" + position, Toast.LENGTH_SHORT).show();
52 }
53 });
54 }
55 /**
56 * 添加數據
57 */
58 private void initData() {
59 // TODO Auto-generated method stub
60 mDataStrings = new ArrayList<String>();
61 for (int i = 'A'; i < 'z'; i++)
62 {
63 mDataStrings.add("" + (char) i);
64 }
65 }
66
67 }
重新RecyclerView來實現上拉刷新下拉加載
1 package com.item.my.jiejie.activity;
2
3 import java.util.ArrayList;
4 import java.util.List;
5
6 import org.xutils.x;
7 import org.xutils.common.Callback;
8 import org.xutils.http.RequestParams;
9
10 import com.google.gson.Gson;
11 import com.google.gson.JsonArray;
12 import com.google.gson.JsonElement;
13 import com.google.gson.JsonObject;
14 import com.google.gson.JsonParser;
15 import com.item.my.jiejie.R;
16 import com.item.my.jiejie.adpter.MyAdapterOne;
17 import com.item.my.jiejie.entity.Item;
18 import com.item.my.jiejie.view.RefreshRecyclerView;
19 import com.item.my.jiejie.view.RefreshRecyclerView.OnLoadMoreListener;
20
21 import android.app.Activity;
22 import android.os.Bundle;
23 import android.os.Handler;
24 import android.support.v4.widget.SwipeRefreshLayout;
25 import android.support.v4.widget.SwipeRefreshLayout.OnRefreshListener;
26 import android.support.v7.widget.LinearLayoutManager;
27 import android.widget.Toast;
28
29 /**
30 * 實現
31 * @author Administrator
32 *
33 */
34 public class RecycleActivity extends Activity{
35
36 private RefreshRecyclerView recyclerView;
37 private SwipeRefreshLayout mRefreshLayout;
38 private List<Item> lists = new ArrayList<Item>();
39 private MyAdapterOne adapter;
40 private int page= 0;
41
42 @Override
43 protected void onCreate(Bundle savedInstanceState) {
44 // TODO Auto-generated method stub
45 super.onCreate(savedInstanceState);
46 setContentView(R.layout.activity_recyle);
47 recyclerView = (RefreshRecyclerView)findViewById(R.id.lv_recycler);
48 mRefreshLayout = (SwipeRefreshLayout)findViewById(R.id.swipe_refresh_widget);
49 mRefreshLayout.setColorSchemeResources(android.R.color.holo_red_light,android.R.color.holo_blue_light,android.R.color.holo_green_light);
50 //允許加載更多
51 recyclerView.setLoadMoreEnable(true);
52 //設置腳布局
53 recyclerView.setFooterResource(R.layout.item_footer);
54 final LinearLayoutManager layoutManager = new LinearLayoutManager(this);
55 recyclerView.setLayoutManager(layoutManager);
56 page = 1;
57 //默認加載第一個頁
58 getHttp(page);
59 adapter = new MyAdapterOne(this, lists);
60 recyclerView.setAdapter(adapter);
61 mRefreshLayout.setOnRefreshListener(new OnRefreshListener() {
62
63 @Override
64 public void onRefresh() {
65 // TODO Auto-generated method stub
66 page =1;
67 lists.clear();
68 getHttp(page);
69 mRefreshLayout.setRefreshing(false);
70 }
71 });
72 recyclerView.setOnLoadMoreListener(new OnLoadMoreListener() {
73
74 @Override
75 public void loadMoreListener() {
76 // TODO Auto-generated method stub
77 page++;
78 System.out.println("加載更多" + page);
79 new Handler().postDelayed(new Runnable() {
80
81 @Override
82 public void run() {
83 // TODO Auto-generated method stub
84 getHttp(page);
85 }
86 }, 1000);
87 }
88 });
89 }
90 /**
91 * 網絡請求加載數據
92 * @param page2 頁數
93 */
94 private String urlString = "http://111.39.245.156:8080/ccos/ddzx/getProjectByCom.appDo";
95 private void getHttp(int page){
96 RequestParams params = new RequestParams(urlString);
97 params.addBodyParameter("pageSize", "6");
98 params.addBodyParameter("pageNo", page + "");
99 params.addBodyParameter("pageOn", "" + true);
100 params.addBodyParameter("comId", "13");
101 x.http().post(params, new Callback.CommonCallback<String>() {
102
103 @Override
104 public void onCancelled(CancelledException arg0) {
105 // TODO Auto-generated method stub
106
107 }
108
109 @Override
110 public void onError(Throwable arg0, boolean arg1) {
111 // TODO Auto-generated method stub
112 System.out.println("請求失敗" +arg0);
113 recyclerView.notifyData();
114 }
115
116 @Override
117 public void onFinished() {
118 // TODO Auto-generated method stub
119
120 }
121
122 @Override
123 public void onSuccess(String arg0) {
124 // TODO Auto-generated method stub
125 System.out.println("請求成功" + arg0);
126 //lists.clear();
127 try {
128 JsonParser parser = new JsonParser();
129 JsonElement element = parser.parse(arg0);
130 JsonObject root = element.getAsJsonObject();
131 JsonArray array = root.getAsJsonArray("missionsList");
132 for(JsonElement obj : array){
133 lists.add(new Gson().fromJson(obj, Item.class));
134 //recyclerView.notifyData();
135 }
136
137 if(lists.size()<1){
138 Toast.makeText(RecycleActivity.this, "暫無記錄", Toast.LENGTH_SHORT).show();
139 }
140 } catch (Exception e) {
141 // TODO Auto-generated catch block
142 e.printStackTrace();
143 }finally{
144 recyclerView.notifyData();
145 }
146 }
147 });
148 }
149 }
用PullToRefreshListView 來實現上拉刷新下拉加載更多
1 package com.item.my.jiejie.activity;
2
3 import java.util.ArrayList;
4 import java.util.List;
5 import org.xutils.x;
6 import org.xutils.common.Callback;
7 import org.xutils.http.RequestParams;
8 import com.google.gson.Gson;
9 import com.google.gson.JsonArray;
10 import com.google.gson.JsonElement;
11 import com.google.gson.JsonObject;
12 import com.google.gson.JsonParser;
13 import com.handmark.pulltorefresh.library.PullToRefreshBase;
14 import com.handmark.pulltorefresh.library.PullToRefreshBase.Mode;
15 import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener2;
16 import com.handmark.pulltorefresh.library.PullToRefreshListView;
17 import com.item.my.jiejie.R;
18 import com.item.my.jiejie.adpter.MyAdapterTwo;
19 import com.item.my.jiejie.entity.Item;
20 import android.app.Activity;
21 import android.os.Bundle;
22 import android.widget.ListView;
23 import android.widget.Toast;
24
25 /**
26 * PullToRefreshListView 來實現上拉刷新下拉加載更多
27 * @author Administrator
28 *
29 */
30 public class PulltoActivity extends Activity{
31
32 private PullToRefreshListView mListView;
33 private int page = 0;
34 private List<Item> lists = new ArrayList<Item>();
35 private MyAdapterTwo adapter;
36
37 @Override
38 protected void onCreate(Bundle savedInstanceState) {
39 // TODO Auto-generated method stub
40 super.onCreate(savedInstanceState);
41 setContentView(R.layout.activity_pullto);
42 setView();
43 }
44
45 private void setView() {
46 // TODO Auto-generated method stub
47 mListView = (PullToRefreshListView)findViewById(R.id.lv_listviewtwo);
48 mListView.setMode(Mode.BOTH);
49 ListView listView = mListView.getRefreshableView();
50 page = 1;
51 getHttp(page);
52 OnRefreshListener2<ListView> mListener2 = new OnRefreshListener2<ListView>() {
53
54 @Override
55 public void onPullDownToRefresh(
56 PullToRefreshBase<ListView> refreshView) {
57 // TODO Auto-generated method stub
58 lists.clear();
59 adapter.notifyDataSetChanged();
60 page = 1;
61 getHttp(page);
62 }
63
64 @Override
65 public void onPullUpToRefresh(
66 PullToRefreshBase<ListView> refreshView) {
67 // TODO Auto-generated method stub
68 page++;
69 getHttp(page);
70 }
71 };
72 mListView.setOnRefreshListener(mListener2);
73 adapter = new MyAdapterTwo(PulltoActivity.this,lists);
74 listView.setAdapter(adapter);
75 }
76 /**
77 * 網絡請求加載數據
78 * @param page2 頁數
79 */
80 private String urlString = "http://111.39.245.156:8080/ccos/ddzx/getProjectByCom.appDo";
81 private void getHttp(int page2) {
82 // TODO Auto-generated method stub
83 RequestParams params = new RequestParams(urlString);
84 params.addBodyParameter("pageSize", "6");
85 params.addBodyParameter("pageNo", page2 + "");
86 params.addBodyParameter("pageOn", "" + true);
87 params.addBodyParameter("comId", "13");
88 x.http().post(params, new Callback.CommonCallback<String>() {
89
90 @Override
91 public void onCancelled(CancelledException arg0) {
92 // TODO Auto-generated method stub
93
94 }
95
96 @Override
97 public void onError(Throwable arg0, boolean arg1) {
98 // TODO Auto-generated method stub
99 System.out.println(arg0 + "請求失敗");
100 adapter.notifyDataSetChanged();
101 mListView.postDelayed(new Runnable() {
102
103 @Override
104 public void run() {
105 // TODO Auto-generated method stub
106 mListView.onRefreshComplete();
107 }
108 }, 800);
109 }
110
111 @Override
112 public void onFinished() {
113 // TODO Auto-generated method stub
114
115 }
116
117 @Override
118 public void onSuccess(String arg0) {
119 // TODO Auto-generated method stub
120 System.out.println("請求成功 " + arg0);
121 try {
122 JsonParser parser = new JsonParser();
123 JsonElement element = parser.parse(arg0);
124 JsonObject root = element.getAsJsonObject();
125 JsonArray array = root.getAsJsonArray("missionsList");
126 for(JsonElement obj : array){
127 lists.add(new Gson().fromJson(obj, Item.class));
128 }
129 if(lists.size()<1){
130 Toast.makeText(PulltoActivity.this, "暫無記錄", Toast.LENGTH_SHORT).show();
131 }
132 } catch (Exception e) {
133 // TODO Auto-generated catch block
134 e.printStackTrace();
135 }finally{
136 adapter.notifyDataSetChanged();
137 mListView.postDelayed(new Runnable() {
138
139 @Override
140 public void run() {
141 // TODO Auto-generated method stub
142 mListView.onRefreshComplete();
143 }
144 }, 800);
145 }
146
147 }
148 });
149 }
150 }
1 package com.item.my.jiejie.adpter;
2
3 import java.text.DateFormat;
4 import java.text.SimpleDateFormat;
5 import java.util.Date;
6 import java.util.List;
7 import java.util.Locale;
8 import com.item.my.jiejie.R;
9 import com.item.my.jiejie.entity.Item;
10 import android.content.Context;
11 import android.text.TextUtils;
12 import android.view.View;
13 import android.view.ViewGroup;
14 import android.widget.BaseAdapter;
15 import android.widget.TextView;
16
17 /**
18 * 第二個的適配器
19 *
20 * @author Administrator
21 *
22 */
23 public class MyAdapterTwo extends BaseAdapter {
24 private Context context;
25 private List<Item> list;
26
27 public MyAdapterTwo(Context context, List<Item> list) {
28 this.context = context;
29 this.list = list;
30 }
31
32 @Override
33 public int getCount() {
34 // TODO Auto-generated method stub
35 if (list != null) {
36 return list.size();
37 } else {
38 return 0;
39 }
40 }
41
42 @Override
43 public Object getItem(int arg0) {
44 // TODO Auto-generated method stub
45 return null;
46 }
47
48 @Override
49 public long getItemId(int arg0) {
50 // TODO Auto-generated method stub
51 return 0;
52 }
53
54 @Override
55 public View getView(int arg0, View arg1, ViewGroup arg2) {
56 // TODO Auto-generated method stub
57 ViewHolder holder = null;
58 if (arg1 == null) {
59 holder = new ViewHolder();
60 arg1 = View.inflate(context, R.layout.item_mytwo, null);
61 holder.tv_place = (TextView) arg1.findViewById(R.id.item_place);
62 holder.tv_code = (TextView) arg1.findViewById(R.id.item_code);
63 holder.tv_time = (TextView) arg1.findViewById(R.id.item_time);
64 arg1.setTag(holder);
65 } else {
66 holder = (ViewHolder) arg1.getTag();
67 }
68 Date time = new Date(list.get(arg0).getRequireDtime());
69 DateFormat df = new SimpleDateFormat("yy-MM-dd HH:mm",Locale.getDefault());
70 String resultTime = df.format(time);
71 String misName = list.get(arg0).getMisName();
72 if(!TextUtils.isEmpty(misName)){
73 holder.tv_place.setText(misName + "");
74 }else {
75 holder.tv_place.setText("該地點暫無名稱");
76 }
77 holder.tv_code.setText(list.get(arg0).getCurLoad() + "/"
78 + list.get(arg0).getRequireAmount());
79 holder.tv_time.setText(resultTime);
80 return arg1;
81 }
82
83 static class ViewHolder {
84 private TextView tv_place;
85 private TextView tv_code;
86 private TextView tv_time;
87 }
88 }
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