DYMRollingBanner

DYMRollingBanner is a clean and easy-to-use banner rolling control for your app's homepage screen which need to show some rolling banners.

Why

Why do I write this ? Well...actually, I've been searching for a scrolling banner view at github for a while, but no luck since some of the code I found are too old to support Autolayout, others don't scrolls infinitely... none of them satisfied me. Then, I decided to do it myself, to write a good one...and here you go...

Features

• Infinite scrolling, which mean it shows banners/images in a infinite loop.
• Can scroll automatically, the intervals and the direction of the scrolling is configurable.
• Supports both local and remote images.
• Placeholder image is customizable, Remote image fetch method is also cusomizable.
• Paused on dragging and resumes on releasing when it's auto rolling.
• Have a memory cache which makes it lightning fast and less memory consuming.
• Block based event handling.
• 100% compatible with AutoLayout.
• Writen with clean code and very easy to use.

Installation

(from CocoaPods)

CocoaPods is a dependency manager for Objective-C, which automates and simplifies the process of using 3rd-party libraries like DYMRollingBanner in your projects. Simply add the following line to your Podfile:

pod 'DYMRollingBanner', '~> 2.1.7'

(direct installation)

Just copy these source files into you project:

• DYMRollingBannerVC.h
• DYMRollingBannerVC.m
• DYMBannerVC.h
• DYMBannerVC.m
• DYMBannerPool.h
• DYMBannerPool.m

Usage

Unlike many other banner scrolling controls, DYMRollingBanner doesn't use UIScrollingView or its subclasses UITableview or UICollectionView, instead it take full advantage of UIPageViewController which is natually an INFINITE controller.

To integrate DYMRollingBanner, firstly, you need to copy the assciated files into your project, and import DYMRollingBannerVC.h file:

#import <DYMRollingBanner/DYMRollingBannerVC.h>

Secondly, Create a DYMRollingBannerVC object.

DYMRollingBannerVC      *_rollingBannerVC;

_rollingBannerVC = [DYMRollingBannerVC new];

Then, add the DYMRollingBannerVC object as the child view controller of the host controller.

[self addChildViewController:_rollingBannerVC];
[self.view addSubview:_rollingBannerVC.view];
    
    // The code below lays out the _rollingBannerVC's view using Masonry
    [_rollingBannerVC.view mas_makeConstraints:^(MASConstraintMaker *make) {
        make.leading.top.and.right.equalTo(self.view);
        make.height.equalTo(@200);
    }];
    
 [_rollingBannerVC didMoveToParentViewController:self];

Finally, feed it with you image URLs or UIImage object:

        // setup the rolling images
        _rollingBannerVC.rollingImages = @[@"http://easyread.ph.126.net/G8GtEi-zmPQzvS5w7ScxmQ==/7806606224489671909.jpg"
                             , @"https://c2.staticflickr.com/4/3345/5832660048_55f8b0935b.jpg"
                             , @"http://epaper.syd.com.cn/sywb/res/1/20080108/42241199752656275.jpg"
                             , [UIImage imageNamed:@"001"]
                             , [UIImage imageNamed:@"002"]
                             ];
                             
        // Start auto rolling (optional, default does not auto roll)
        [_rollingBannerVC startRolling];

And you are good to go!

You can also do many customizations to it (they are optional):

        // Set the inteval for rolling (optional, the default value is 1 sec)
        _rollingBannerVC.rollingInterval = 5;
        
        // Set the placeholder image (optional, the default place holder is nil)
        _rollingBannerVC.placeHolderImage = [UIImage imageNamed:@"default"];
        
        // Define the way how you load the image from a remote url
        [_rollingBannerVC setRemoteImageLoadingBlock:^(UIImageView *imageView, NSString *imageUrlStr, UIImage *placeHolderImage) {
            [imageView sd_cancelCurrentImageLoad];
            [imageView sd_setImageWithURL:[NSURL URLWithString:imageUrlStr] placeholderImage:placeHolderImage options:SDWebImageProgressiveDownload];
        }];
        
        // Add a handler when a tap event occours (optional, default do noting)
        [_rollingBannerVC addBannerTapHandler:^(NSInteger whichIndex) {
            NSLog(@"banner tapped, index = %@", @(whichIndex));
        }];
        
        // If 'YES', the auto scrolling will scroll to the right
        vc.isAutoScrollingBackward = YES;

Associated Classes

• DYMRollingBannerVC is the view controller which rolls a group of banner images.
• DYMBannerVC is the host view controller of each image, it's internally used by the DYMRollingBannerVC.
• DYMBannerPool is the memory pool from which you dequeue a banner from, it's internally used by the DYMRollingBannerVC.

Contributing to this project

If you have feature requests or bug reports, feel free to help out by sending pull requests, or contact dymx101@hotmail.com.

Credits

DYMRollingBanner is brought to you by Yiming Dong.
Follow me or ask questions or just say Hi! at Twitter : @dymx101