Android PullToRefresh上拉和下拉刷新

Github链接:

​​https://github.com/chrisbanes/Android-PullToRefresh​​

GUIDE：

​​https://github.com/chrisbanes/Android-PullToRefresh/wiki/Quick-Start-Guide​​

1. 设置Listview 
layout文件中定义PullToRefreshListView 

Xml代码

1. <com.handmark.pulltorefresh.library.PullToRefreshListView
2. android:id="@+id/list_view"
3. android:layout_width="match_parent"
4. android:layout_height="match_parent" />

2. 设置Mode 

1. PullToRefreshListView mListView = (PullToRefreshListView) findViewById(R.id.list_view);  
2. mListView.setMode(Mode.BOTH);  

可支持的Mode如下：

• Mode.BOTH：同时支持上拉下拉
• Mode.PULL_FROM_START：只支持下拉Pulling Down
• Mode.PULL_FROM_END：只支持上拉Pulling Up

3. 实现监听Listener

如果Mode设置成Mode.BOTH，需要设置监听OnRefreshListener2，并实现onPullDownToRefresh()、onPullUpToRefresh()两个方法。 

如果Mode设置成Mode.PULL_FROM_START或Mode.PULL_FROM_END，需要设置监听OnRefreshListener，同时实现onRefresh()方法。当然也可以设置为OnRefreshListener2，但是Mode.PULL_FROM_START的时候只调用onPullDownToRefresh()方法，Mode.PULL_FROM的时候只调用onPullUpToRefresh()方法。

4. 具体代码如下：

1. public class MainActivity extends
2.       
3. private
4. private
5. private
6.       
7. @Override
8. protected void
9. super.onCreate(savedInstanceState);  
10.         setContentView(R.layout.sample);  
11.           
12. // 设置初期数据
13. new
14. for (int i = 1; i <= 10; i++) {  
15. "Item "
16.         }  
17.   
18. // 设置ListView
19.         mListView = (PullToRefreshListView) findViewById(R.id.list_view);  
20. new
21.         mListView.setAdapter(mAdapter);  
22.           
23. // 设置PullToRefresh
24.         mListView.setMode(Mode.BOTH);  
25. new
26.    
27. // 下拉Pulling Down
28. @Override
29. public void
30. // 下拉的时候数据重置
31. new
32. for (int i = 1; i <= 10; i++) {  
33. "Item "
34.                 }  
35.                 mAdapter.notifyDataSetChanged();  
36.                   
37. new
38.             }  
39.               
40. // 上拉Pulling Up
41. @Override
42. public void
43. // 上拉的时候添加选项
44. int
45. "Item "
46.                 mAdapter.notifyDataSetChanged();  
47.                   
48. new
49.             }  
50.    
51.         });  
52.           
53.     }  
54.       
55. private class SampleListAdapter extends
56.            
57. @Override
58. public int
59. return
60.         }  
61.    
62. @Override
63. public Object getItem(int
64. return
65.         }  
66.    
67. @Override
68. public long getItemId(int
69. return
70.         }  
71.    
72. @Override
73. public View getView(int
74. if(view == null){  
75.                 LayoutInflater inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);  
76. null);  
77.             }  
78.             TextView textView = (TextView)view.findViewById(R.id.listItemText);  
79.             textView.setText(mListItems.get(index));  
80. return
81.         }  
82.     }  
83.    
84. private class FinishRefresh extends
85. @Override
86. protected
87. return null;  
88.         }  
89.    
90. @Override
91. protected void
92.             mListView.onRefreshComplete();  
93.         }  
94.     }  
95. }