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UIScrollView category with custom timing function for animation of setContentOffset
Objective-C
branch: master

Another typo fix in Readme

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Jonathan Lott authored
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README.md
UIScrollView+ScrollAnimation.h
UIScrollView+ScrollAnimation.m

README.md

UIScrollView-ScrollAnimation

UIScrollView category with custom timing function for animation of setContentOffset

Background

This work was inspired by this project here: https://github.com/plancalculus/MOScrollView

Features

Provides methods

- (void)setContentOffset:(CGPoint)contentOffset 
      withTimingFunction:(CAMediaTimingFunction *)timingFunction

and

- (void)setContentOffset:(CGPoint)contentOffset 
      withTimingFunction:(CAMediaTimingFunction *)timingFunction
                duration:(CFTimeInterval)duration

Usage

Import UIScrollView+ScrollAnimation.h and UIScrollView+ScrollAnimation.m into your project. The implementation uses a CADisplayLink, therefore, you have to add the QuartzCore library to your project. As the class uses automatic refernce counting either your project has to use automatic reference counting as well.

Exmaple:

#import "UIScrollView+ScrollAnimation.h"

@interface MyCollectionViewController : UIViewController
@property (nonatomic, strong) UICollectionView* collectionView;
@end

@implementation MyCollectionViewController

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];

    // call method to slowly scroll up or down, left or right
    [self.collectionView setContentOffset:offsetPoint 
                       withTimingFunction:[CAMediaTimingFunction functionWithName:kCAMediaTimingFunctionEaseInEaseOut] 
                       duration:animationDuration];
}

@end

Requirements

XCode 4.2 or later and iOS 4 or later as the module uses automatic reference counting.

License

Permission is hereby granted, free of charge, to any person obtaining a copy of
 this software and associated documentation files (the "Software"), to deal in
 the Software without restriction, including without limitation the rights to
 use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
 of the Software, and to permit persons to whom the Software is furnished to do
 so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.

 If you happen to meet one of the copyright holders in a bar you are obligated
 to buy them one pint of beer.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.


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