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ODRefreshControl is a “pull down to refresh” control for UIScrollView, like the one Apple introduced in iOS6, but available to anyone from iOS4 and up.

• Drag theODRefreshControl/ODRefreshControl folder into your project.
• Add theQuartzCore framework to your project.
• #import "ODRefreshControl.h"

Important note if your project doesn’t useARC: you must add the-fobjc-arc compiler flag toODRefreshControl.m in Target Settings > Build Phases > Compile Sources.

(see sample Xcode project in/Demo)

ODRefreshControl *refreshControl = [[ODRefreshControl alloc] initInScrollView:self.scrollView];

To know when the refresh operation has started, add an action method to the UIControlEventValueChanged event of the control

[refreshControl addTarget:self action:@selector(dropViewDidBeginRefreshing:) forControlEvents:UIControlEventValueChanged];

If you’d like to programmatically start the refresh operation, use

[refreshControl beginRefreshing];

Remember to tell the control when the refresh operation has ended

[refreshControl endRefreshing];

TheODRefreshControl can be customized using the following properties:

@property (nonatomic, strong) UIColor *tintColor;@property (nonatomic, assign) UIActivityIndicatorViewStyle activityIndicatorViewStyle;@property (nonatomic, strong) UIColor *activityIndicatorViewColor; // iOS5 or more

ODRefreshControl is brought to you byFabio Ritrovato andcontributors to the project. If you have feature suggestions or bug reports, feel free to help out by sending pull requests or bycreating new issues. If you’re using ODRefreshControl in your project, attribution would be nice.