SY Refresh Table

简单易用的上拉加载、下拉刷新组件，可自定义头部和底部视图，可单独实现下拉刷新，上拉加载更多。

Latest：Swift实现，只实现了下拉刷新，还没有实现上拉加载更多

用法：(具体请查看DEMO)

/** SEE SYRefreshTable (https://github.com/reesun1130/SYRefreshTable) for instructions.
* USE SYRefreshTable LIKE:
* @interface ViewController : SYTableViewController
* OVERRIDE refresh、loadMore、scrollViewDidScroll
*/

////////// 只需实现这三个方法 即可实现下拉刷新，上拉加载更多 #Pull to Refresh

*  - (BOOL)refresh
   {
      if (![super refresh])
         return NO;
      
      self.pageCount = 1;
      
      [lockLoadData lock];
      [self performSelector:@selector(loadItemData) withObject:nil afterDelay:0.01];
      [lockLoadData unlock];
      
      return YES;
   }

#Load More

*  - (BOOL)loadMore
   {
       if (![super loadMore])
          return NO;
       
       self.pageCount ++;

       [lockLoadData lock];
       [self performSelector:@selector(loadItemData) withObject:nil afterDelay:0.01];
       [lockLoadData unlock];

       return YES;
   }

#UIScrollViewDelegate Method

*  - (void)scrollViewDidScroll:(UIScrollView *)scrollView
   {
      [super scrollViewDidScroll:scrollView];
   }

////////// 只需实现这三个方法 即可实现下拉刷新，上拉加载更多

效果如下：