IOS 精选源码之 下拉刷新 已封装好，更新到xcode4.5

// // RefreshView.h // TestRefreshView // // Created by Jason Liu on 12-1-10. // Copyright 2012年 Yulong. All rights reserved. // // Refresh view controller show label #define REFRESH_LOADING_STATUS @"加载中..." #define REFRESH_PULL_DOWN_STATUS @"下拉可以刷新..." #define REFRESH_RELEASED_STATUS @"松开即刷新..." #define REFRESH_UPDATE_TIME_PREFIX @"最后更新: " #define REFRESH_HEADER_HEIGHT 60 #import <UIKit/UIKit.h> @protocol RefreshViewDelegate; @interface RefreshView : UIView { // UI UIImageView *refreshArrowImageView; UIActivityIndicatorView *refreshIndicator; UILabel *refreshStatusLabel; UILabel *refreshLastUpdatedTimeLabel; // 安装到哪个UIScrollView中 UIScrollView *owner; // control BOOL isLoading; BOOL isDragging; // 触发有效事件后的delegate id<RefreshViewDelegate>__weak delegate; } @property (nonatomic, strong) IBOutlet UIActivityIndicatorView *refreshIndicator; @property (nonatomic, strong) IBOutlet UILabel *refreshStatusLabel; @property (nonatomic, strong) IBOutlet UILabel *refreshLastUpdatedTimeLabel; @property (nonatomic, strong) IBOutlet UIImageView *refreshArrowImageView; @property (nonatomic, assign) BOOL isLoading; @property (nonatomic, assign) BOOL isDragging; @property (nonatomic, strong) UIScrollView *owner; @property (nonatomic, weak) id<RefreshViewDelegate>delegate; // 安装refreshView - (void)setupWithOwner:(UIScrollView *)owner delegate:(id)delegate; // 开始加载和结束加载动画 - (void)startLoading; - (void)stopLoading; // 拖动过程中 - (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView; - (void)scrollViewDidScroll:(UIScrollView *)scrollView; - (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate; @end @protocol RefreshViewDelegate <NSObject> // 只有向下拉时，有效的触发事件对外才是真正有用的 - (void)refreshViewDidCallBack; @end