https://github.com/kittenyang/kyjellypulltorefresh

A shape changing & physical ball pull-to-refresh.
https://github.com/kittenyang/kyjellypulltorefresh

Last synced: about 2 months ago
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A shape changing & physical ball pull-to-refresh.

• Host: GitHub
• URL: https://github.com/kittenyang/kyjellypulltorefresh
• Owner: KittenYang
• License: mit
• Created: 2015-02-07T17:35:30.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2015-06-06T03:12:55.000Z (almost 10 years ago)
• Last Synced: 2025-03-30T08:08:17.998Z (2 months ago)
• Language: Objective-C
• Homepage:
• Size: 3.9 MB
• Stars: 557
• Watchers: 35
• Forks: 65
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        



  



![CocoaPods Version](https://img.shields.io/badge/pod-v1.1.0-brightgreen.svg)

![License](https://img.shields.io/badge/license-MIT-blue.svg)

![Platform](https://img.shields.io/badge/platform-iOS-red.svg)

![](ball.gif)

##Usage

`pod 'KYJellyPullToRefresh', '~> 1.1.0'`

##How To Use

Firstly,in your ViewController or TableViewController,initiate the Jellview and the "displayLink"  in the `- (void)scrollViewDidScroll:(UIScrollView *)scrollView`  method:

Like this:

```objective-c

- (void)scrollViewDidScroll:(UIScrollView *)scrollView

{

    if (self.displayLink == nil && (-scrollView.contentOffset.y - 64.5) > 0) {

        self.jellyView = [[JellyView alloc]initWithFrame:CGRectMake(0, -jellyHeaderHeight , [UIScreen mainScreen].bounds.size.width, jellyHeaderHeight)];

        self.jellyView.backgroundColor = [UIColor clearColor];

        [self.view insertSubview:self.jellyView aboveSubview:self.tableView];

        self.displayLink = [CADisplayLink displayLinkWithTarget:self selector:@selector(displayLinkAction:)];

        [self.displayLink addToRunLoop:[NSRunLoop mainRunLoop] forMode:NSRunLoopCommonModes];

    }

}

```

Then you should change the controlPoint of the Bezier Path

```objective-c

-(void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{

    CGFloat offset = -scrollView.contentOffset.y - 64.5;

    if (offset >= 130) {

        self.jellyView.isLoading = YES;

        [UIView animateWithDuration:0.3 delay:0.0f usingSpringWithDamping:0.4f initialSpringVelocity:0.0f options:UIViewAnimationOptionCurveEaseInOut animations:^{

            

            self.jellyView.controlPoint.center = CGPointMake(self.jellyView.userFrame.size.width / 2, jellyHeaderHeight);

            NSLog(@"self.jellyView.controlPoint.center:%@",NSStringFromCGPoint(self.jellyView.controlPoint.center));

            self.tableView.contentInset = UIEdgeInsetsMake(130+64.5, 0, 0, 0);

        } completion:^(BOOL finished) {

            [self performSelector:@selector(backToTop) withObject:nil afterDelay:2.0f];

        }];

    }

}

```

Lastest,remove everything:

```objective-c

//动画结束，删除一切

-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{

    if (self.jellyView.isLoading == NO) {

        [self.jellyView removeFromSuperview];

        self.jellyView = nil;

        [self.displayLink invalidate];

        self.displayLink = nil;

    }

}

```

Intro:  [http://kittenyang.com/cadisplaylinkanduibezierpath/](http://kittenyang.com/cadisplaylinkanduibezierpath/)

##License

This project is under MIT License. See LICENSE file for more information.