EGORefreshTableHeaderView学习 沧海一粟

1、下载EGORefreshTableHeaderView开源框架。

2、往应用中添加EGORefreshTableHeaderView.h文件、EGORefreshTableHeaderView.m文件、Resource目录，并且导入QuartzCore.framework

3、添加代码

 往tableview对应的类的头文件中添加如下代码 EGORefreshTableHeaderView *_refreshHeaderView;

        BOOL _reloading;  
      
    - (void)reloadTableViewDataSource;  
    - (void)doneLoadingTableViewData;  

 

 往viewDidLoad函数里添加如下代码

    if (_refreshHeaderView == nil) {  
              
            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)];  
            view.delegate = self;  
            [self.tableView addSubview:view];  
            _refreshHeaderView = view;  
            [view release];  
              
        }  
          
        //  update the last update date  
        [_refreshHeaderView refreshLastUpdatedDate];  

  再添加一些事件函数

    #pragma mark -  
    #pragma mark Data Source Loading / Reloading Methods  
      
    - (void)reloadTableViewDataSource{  
          
        //  should be calling your tableviews data source model to reload  
        //  put here just for demo  
        _reloading = YES;  
          
    }  
      
    - (void)doneLoadingTableViewData{  
          
        //  model should call this when its done loading  
        _reloading = NO;  
        [_refreshHeaderView egoRefreshScrollViewDataSourceDidFinishedLoading:self.tableView];  
          
    }  
      
    #pragma mark -  
    #pragma mark UIScrollViewDelegate Methods  
      
    - (void)scrollViewDidScroll:(UIScrollView *)scrollView{  
          
        [_refreshHeaderView egoRefreshScrollViewDidScroll:scrollView];  
          
    }  
      
    - (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{  
          
        [_refreshHeaderView egoRefreshScrollViewDidEndDragging:scrollView];  
          
    }  
      
    #pragma mark -  
    #pragma mark EGORefreshTableHeaderDelegate Methods  
      
    - (void)egoRefreshTableHeaderDidTriggerRefresh:(EGORefreshTableHeaderView*)view{  
          
        [self reloadTableViewDataSource];  
        [self performSelector:@selector(doneLoadingTableViewData) withObject:nil afterDelay:3.0];  
          
    }  
      
    - (BOOL)egoRefreshTableHeaderDataSourceIsLoading:(EGORefreshTableHeaderView*)view{  
          
        return _reloading; // should return if data source model is reloading  
          
    }  
      
    - (NSDate*)egoRefreshTableHeaderDataSourceLastUpdated:(EGORefreshTableHeaderView*)view{  
          
        return [NSDate date]; // should return date data source was last changed  
          
    }  

 最后，自己配置数据源进行测试。