SwipeRefreshLayout实现上拉下拉刷新

1:在布局中添加SwipeRefreshLayout和Listview组件

[html] view
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1. <?xml version="1.0" encoding="utf-8"?>
2. <RelativeLayout
3. style="@style/BaseStyle.White"
4. xmlns:android="http://schemas.android.com/apk/res/android">
5. <!--下拉刷新-->
6. <android.support.v4.widget.SwipeRefreshLayout
7. android:id="@+id/srl_refresh"
8. style="@style/BaseStyle">
9. <!--上拉更多-->
10. <ListView
11. android:id="@+id/lv_person_goods"
12. style="@style/BaseStyle"
13. android:gravity="center"
14. android:horizontalSpacing="@dimen/margin_standard"
15. android:numColumns="2"
16. android:scrollbarStyle="outsideOverlay"
17. android:verticalSpacing="@dimen/margin_standard"/>
18. </android.support.v4.widget.SwipeRefreshLayout>
19. <!--数据为空时显示的View-->
20. <TextView
21. android:id="@+id/tv_no_data"
22. style="@style/BaseStyle.FullWrap"
23. android:layout_marginTop="@dimen/textview_width_small"
24. android:gravity="center_horizontal"
25. android:text="暂无数据"
26. android:textColor="@color/text_title_standard"
27. android:textSize="@dimen/font_size_small"
28. android:visibility="gone"/>
29. </RelativeLayout>

2:在主页面使用

[java] view
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1. /**
2. * Created by pengkv on 2014/12/5.
3. * 我的宝贝列表页面,用于选择添加到拍卖场
4. */
5. public class MySaleGoodsListViewActivity extends VolleyActivity implements IInit, IResponseHandler, IPagination, SwipeRefreshLayout.OnRefreshListener {
6. private int auctionID;
7. private GoodsInfoViewModel mViewModel;
8. private TextView mEmptyTV;//空白视图
9. private ListView mListView;//专场列表
10. private PersonGoodsListAdapter mAdapter;//适配器
11. private SwipeRefreshLayout mSwipeRefreshLayout;//下拉刷新布局
12. @Override
13. protected void onCreate(Bundle savedInstanceState) {
14. super.onCreate(savedInstanceState);
15. setContentView(R.layout.activity_me_auction_goods_list);
16. init();
17. }
18. @Override
19. public void init() {
20. ActionBarUtil.setup(this, "我店铺的宝贝");
21. auctionID = getIntent().getIntExtra(EnumIntentKey.AUCTION_ID.toString(), 0);
22. mListView = (ListView) findViewById(R.id.lv_person_goods);
23. mEmptyTV = (TextView) findViewById(R.id.tv_no_data);
24. mSwipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.srl_refresh);//下拉刷新组件
25. mSwipeRefreshLayout.setOnRefreshListener(this);//设置刷新监听器
26. mSwipeRefreshLayout.setColorSchemeResources(R.color.background_blue_standard, R.color.white, R.color.background_blue_standard, R.color.white);//设置下拉刷新组件的颜色
27. mViewModel = new GoodsInfoViewModel();
28. fetchData(FIRST);//得到喜欢列表数据
29. }
30. @Override
31. public void fetchData(int tag) {
32. GetGoodsListForSellParam param = new GetGoodsListForSellParam(Data.getUserID(), 1, mViewModel.getPageIndex(), Data.PAGE_SIZE_MEDIUM);
33. SquareApi.getGoodsListForSell(this, param, tag);
34. }
35. /**
36. * 更新适配器
37. */
38. @Override
39. protected void onRestart() {
40. super.onRestart();
41. mViewModel.reset();
42. fetchData(FIRST);//得到喜欢列表数据
43. }
44. @Override
45. public void updateUI(Object response, final int tag) {
46. if (response == null) return;
47. if (tag == FIRST) {
48. //得到喜欢列表数据
49. mViewModel.inflate(response);
50. //通过判断喜欢列表适配器mAdapter是否为空来做分页处理
51. if (mAdapter == null) {
52. //当适配器为空
53. mSwipeRefreshLayout.setRefreshing(false);//下拉刷新组件停止刷新
54. mAdapter = new PersonGoodsListAdapter(this, mViewModel.getList());
55. mListView.setAdapter(mAdapter);//ListView绑定喜欢适配器
56. /**
57. *  上拉更多
58. */
59. mListView.setOnScrollListener(new AbsListView.OnScrollListener() {
60. @Override
61. public void onScrollStateChanged(AbsListView view, int scrollState) {
62. switch (scrollState) {
63. case SCROLL_STATE_IDLE:
64. if (mListView.getLastVisiblePosition() == mViewModel.getList().size() - 1) {
65. if (!mViewModel.isComplete()) {
66. fetchNewData(FIRST);
67. }
68. }
69. break;
70. }
71. }
72. @Override
73. public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
74. }
75. });
76. mListView.setEmptyView(mEmptyTV);//将此图片绑定到喜欢列表ListView
77. } else {
78. mAdapter.notifyDataSetChanged();//适配器更新数据
79. }
80. mListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
81. @Override
82. public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
83. Intent i = new Intent();
84. if (getIntent().getBooleanExtra(EnumIntentKey.IS_SELECT_LINK.toString(), false)) { // 选择发送链接
85. i.putExtra(EnumIntentKey.GOODS_ID.toString(), mViewModel.getList().get(position).getGoodsID());
86. i.putExtra(EnumIntentKey.GOODS_NAME.toString(), mViewModel.getList().get(position).getGoodsName());
87. setResult(RESULT_OK, i);
88. } else {  // 添加到专场
89. i.setClass(MySaleGoodsListViewActivity.this, AddAuctionGoodsActivity.class);
90. i.putExtra(EnumIntentKey.AUCTION_GOODS_ID.toString(), mViewModel.getList().get(position).getGoodsID());
91. i.putExtra(EnumIntentKey.IS_DO.toString(), true);
92. i.putExtra(EnumIntentKey.AUCTION_ID.toString(), auctionID);
93. startActivity(i);
94. }
95. finish();
96. }
97. });
98. }
99. }
100. @Override
101. public void fetchNewData(int tag) {
102. mViewModel.increasePageIndex();
103. fetchData(FIRST);//得到喜欢的拍品列表数据
104. }
105. @Override
106. public void onRefresh() {
107. mViewModel.reset();//重置页索引和完成状态
108. mAdapter = null;//清空适配器
109. fetchData(FIRST);//得到喜欢的拍品列表数据
110. }
111. }

解析:

(下拉刷新)主页面需要实现SwipeRefreshLayout.OnRefreshListener接口,然后在

[java] view
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1. @Override
2. public void onRefresh() {
3. }

方法中实现更新

(上拉更多)上拉更多需要监听setOnScrollListener()方法

[java] view
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1. mListView.setOnScrollListener(new AbsListView.OnScrollListener() {
2. @Override
3. public void onScrollStateChanged(AbsListView view, int scrollState) {
4. switch (scrollState) {
5. case SCROLL_STATE_IDLE:
6. if (mListView.getLastVisiblePosition() == mViewModel.getList().size() - 1) {
7. if (!mViewModel.isComplete()) {
8. fetchNewData(FIRST);
9. }
10. }
11. break;
12. }
13. }
14. @Override
15. public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
16. }
17. });