IOS控件 Tableview 下拉刷新，加载数据

#import "EGORefreshTableHeaderView.h"  
  
@interface RootViewController : UITableViewController  {  
  
EGORefreshTableHeaderView *_refreshHeaderView;  
  
//  Reloading var should really be your tableviews datasource  
//  Putting it here for demo purposes  
BOOL _reloading;  
}  
  
- (void)reloadTableViewDataSource;  
- (void)doneLoadingTableViewData;  
@end  

 1 - (void)viewDidLoad {  
 2 [super viewDidLoad];  
 3   
 4 if (_refreshHeaderView == nil) {  
 5   
 6 EGORefreshTableHeaderView *view = [[EGORefreshTableHeaderView alloc] initWithFrame:CGRectMake(0.0f, 0.0f - self.tableView.bounds.size.height, self.view.frame.size.width, self.tableView.bounds.size.height)];  
 7 view.delegate = self;  
 8 [self.tableView addSubview:view];  
 9 _refreshHeaderView = view;  
10 [view release];  
11   
12 }  
13   
14 //  update the last update date  
15 [_refreshHeaderView refreshLastUpdatedDate];  
16 }  

 1 #pragma mark -  
 2 #pragma mark Data Source Loading / Reloading Methods  
 3   
 4 - (void)reloadTableViewDataSource{  
 5   
 6 //  should be calling your tableviews data source model to reload  
 7 //  put here just for demo  
 8 _reloading = YES;  
 9   
10 }  
11   
12 - (void)doneLoadingTableViewData{  
13   
14 //  model should call this when its done loading  
15 _reloading = NO;  
16 [_refreshHeaderView egoRefreshScrollViewDataSourceDidFinishedLoading:self.tableView];  
17   
18 }  
19   
20 #pragma mark -  
21 #pragma mark UIScrollViewDelegate Methods  
22   
23 - (void)scrollViewDidScroll:(UIScrollView *)scrollView{  
24   
25 [_refreshHeaderView egoRefreshScrollViewDidScroll:scrollView];  
26   
27 }  
28   
29 - (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{  
30   
31 [_refreshHeaderView egoRefreshScrollViewDidEndDragging:scrollView];  
32   
33 }  
34   
35 #pragma mark -  
36 #pragma mark EGORefreshTableHeaderDelegate Methods  
37   
38 - (void)egoRefreshTableHeaderDidTriggerRefresh:(EGORefreshTableHeaderView*)view{  
39   
40 [self reloadTableViewDataSource];  
41 [self performSelector:@selector(doneLoadingTableViewData) withObject:nil afterDelay:3.0];  
42   
43 }  
44   
45 - (BOOL)egoRefreshTableHeaderDataSourceIsLoading:(EGORefreshTableHeaderView*)view{  
46   
47 return _reloading; // should return if data source model is reloading  
48   
49 }  
50   
51 - (NSDate*)egoRefreshTableHeaderDataSourceLastUpdated:(EGORefreshTableHeaderView*)view{  
52   
53 return [NSDate date]; // should return date data source was last changed  
54   
55 }  

1 - (void)viewDidUnload {  
2 _refreshHeaderView=nil;  
3 }  
4   
5 - (void)dealloc {  
6   
7 _refreshHeaderView = nil;  
8 [super dealloc];  
9 }