Pull to Refresh (ios)

I recently implemented pull to re开发者_JS百科fresh here: https://github.com/leah/PullToRefresh. It kind of works however it gets stuck with a spinning activity indicator. Their is also no text to the right of the arrow. What am I doing wrong? Thanks!

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Without code there's not much anyone can say, but maybe try a different implementation of Pull To Refresh, like the enormego (EGO) version, the code is at github, here

It's used in the Facebook app so it definitely works.

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Apple has introduced UIRefreshControl in iOS6. You can integrate it in your UITableViewController using

- (void)viewDidLoad {
    [super viewDidLoad];
    // Initialize Refresh Control
    UIRefreshControl *refreshControl = [[UIRefreshControl alloc] init];
    // Configure Refresh Control
    [refreshControl addTarget:self action:@selector(refresh:) forControlEvents:UIControlEventValueChanged];
    // Configure View Controller
    [self setRefreshControl:refreshControl];
}

the refresh: method will trigger the update and you can stop it in your API callback using:

 [(UIRefreshControl *)sender endRefreshing];

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I am new to iOS development and I was trying to implement the pull to refresh in iOS 6. Well looking for a solution, I stumbled across this blog post and found it to be very helpful, http://www.intertech.com/Blog/Post/iOS-6-Pull-to-Refresh-(UIRefreshControl).aspx. It lays out the steps to implementing pull to refresh in a way that is easy to follow. Anyone looking to do this themselves in iOS 6 should check out the blog.

The UIRefreshControl is only useable with a Table View currently. There are a few steps to follow to successfully add a refresh control:

1. Create a callback method to handle your refresh logic. The callback method should be invoked when a user pulls down on the table view. The signarture of the method should take one parameter: a pointer to the UIRefreshControl.

Note: Steps 2-4 are all done within the Table View Controller’s viewDidLoad method.

2. Instantiate the UIRefreshControl with a basic "alloc/init".

3. Connect an action to the refresh control to invoke your callback method when the ValueChange event is fired.

4. Add the refresh control to the Table View Controller's "refreshControl" property.

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I prefer the EGO implementation than the leah one because it does not require a subclass of your view controller. The original EGO one in github is a bit of a mess with no .gitnore file and lots of .DS_Store files added unnecessarily. Take a look at some of the many forks and pick one.

The "emreberge" fork looks like a good version, better file organisation and documentation too!

https://github.com/emreberge/EGOTableViewPullRefresh

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I found this library very useful, fancy and up-to-date: https://github.com/Yalantis/Pull-to-Refresh.Rentals-iOS

(Recommendations from other answers seem old and not maintained)

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Now, with newer versions of iOS than the above stated iOS 5 you can use: UIRefreshControl.

There is a really good tutorial on creating your own custom pull to refresh for your iOS Application: http://ios-blog.co.uk/tutorials/how-to-add-a-custom-pull-to-refresh-in-your-ios-application/

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You can use : https://github.com/ngocbinh02/httablekit

Support iOS 5.0 or later

Pull to refresh tableview

    import <HTTableKit/TableKit>

....

//like UIRefreshControll

[tableview setPullToRefreshControlType:UITableViewRefreshControlTypeSystem]; 

[tableview  setPullToRefreshModeEnable:YES beginHandler:^{

      // to do here when pulling to refresh
}];

Dismiss pull to refresh tableview

    import <HTTableKit/TableKit>

....

[tableview  dismissPullToRefreshEndHandler:^{

      // to do here when dismissing     
}];

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Here's our tutorial on Custom Pull-to-Refresh controls, with code for Objective-C and Swift: http://www.jackrabbitmobile.com/design/ios-custom-pull-to-refresh-control/

To add additional text or images, as you mentioned, add them into self.refreshLoadingView in the setupRefreshControl or scrollViewDidScroll methods (from the tutorial).

Let me know if that helps!