标签:des style c class blog code
GMCPagingScrollView
https://github.com/GalacticMegacorp/GMCPagingScrollView
GMCPagingScrollView is a UIView containing a horizontally scrolling paging UIScrollView that supports page preloading, page dequeueing, and infinite scrolling.
GMCPagingScrollView是一个UIView,包含了一个水平方向翻页滚动的UIScrollView,支持预加载,重用以及无线滚动.
demo中提供的源码:
#import "DemoViewController.h" #import "GMCPagingScrollView.h" static NSString * const kPageIdentifier = @"Page"; @interface DemoViewController () <GMCPagingScrollViewDataSource, GMCPagingScrollViewDelegate> @property (nonatomic, strong) GMCPagingScrollView *pagingScrollView; @end @implementation DemoViewController - (void)viewDidLoad { [super viewDidLoad]; self.pagingScrollView = [[GMCPagingScrollView alloc] initWithFrame:CGRectMake(0, 0, 100, 100)]; self.pagingScrollView.center = self.view.center; self.pagingScrollView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; self.pagingScrollView.dataSource = self; self.pagingScrollView.delegate = self; self.pagingScrollView.infiniteScroll = YES; self.pagingScrollView.interpageSpacing = 0; [self.view addSubview:self.pagingScrollView]; [self.pagingScrollView registerClass:[UIView class] forReuseIdentifier:kPageIdentifier]; [self.pagingScrollView reloadData]; } #pragma mark - GMCPagingScrollViewDataSource - (NSUInteger)numberOfPagesInPagingScrollView:(GMCPagingScrollView *)pagingScrollView { return 3; } - (UIView *)pagingScrollView:(GMCPagingScrollView *)pagingScrollView pageForIndex:(NSUInteger)index { UIView *page = [pagingScrollView dequeueReusablePageWithIdentifier:kPageIdentifier]; switch (index) { case 0: page.backgroundColor = [UIColor redColor]; break; case 1: page.backgroundColor = [UIColor greenColor]; break; case 2: page.backgroundColor = [UIColor blueColor]; break; } return page; } - (void)pagingScrollViewDidScroll:(GMCPagingScrollView *)pagingScrollView { NSLog(@"x = %f", pagingScrollView.scrollView.contentOffset.x); } @end
效果:
修改一下并使用SDWebImage来测试:
#import "DemoViewController.h" #import "GMCPagingScrollView.h" #import "SDWebImage.h" static NSString * const kPageIdentifier = @"Page"; @interface DemoViewController () <GMCPagingScrollViewDataSource, GMCPagingScrollViewDelegate> @property (nonatomic, strong) GMCPagingScrollView *pagingScrollView; @property (nonatomic, strong) NSArray *dataArray; @end @implementation DemoViewController - (void)viewDidLoad { [super viewDidLoad]; self.view.backgroundColor = [UIColor blackColor]; _dataArray = @[@"http://img4.duitang.com/uploads/item/201307/29/20130729153409_YCfU2.thumb.200_0.jpeg", @"http://cdn.duitang.com/uploads/item/201212/08/20121208141407_3YGMi.thumb.200_0.jpeg", @"http://cdn.duitang.com/uploads/item/201308/26/20130826211332_WZ4is.thumb.200_0.jpeg", @"http://img4.duitang.com/uploads/item/201301/21/20130121223918_aFk4h.thumb.200_0.jpeg", @"http://img4.duitang.com/uploads/item/201309/15/20130915114846_nsy2A.thumb.200_0.jpeg", @"http://cdn.duitang.com/uploads/item/201306/20/20130620142009_X3fv3.thumb.200_0.jpeg", @"http://img4.duitang.com/uploads/item/201306/17/20130617202501_Z2ZNP.thumb.200_0.jpeg", @"http://img4.duitang.com/uploads/item/201201/23/20120123181139_EvHrc.thumb.200_0.jpg", @"http://img4.duitang.com/uploads/item/201108/24/20110824232929_T85Zt.thumb.200_0.jpg", @"http://cdn.duitang.com/uploads/blog/201308/06/20130806213223_Q2Jfj.thumb.200_0.jpeg", @"http://cdn.duitang.com/uploads/item/201311/10/20131110141543_UMV24.thumb.200_0.jpeg", @"http://cdn.duitang.com/uploads/item/201307/18/20130718225516_RBMnr.thumb.200_0.jpeg", @"http://img4.duitang.com/uploads/item/201202/05/20120205163116_x2F4E.thumb.200_0.jpg", @"http://img4.duitang.com/uploads/item/201202/19/20120219150016_r48NA.thumb.200_0.jpg",]; self.pagingScrollView = [[GMCPagingScrollView alloc] initWithFrame:self.view.bounds]; self.pagingScrollView.dataSource = self; self.pagingScrollView.delegate = self; self.pagingScrollView.infiniteScroll = YES; self.pagingScrollView.interpageSpacing = 0; [self.view addSubview:self.pagingScrollView]; [self.pagingScrollView registerClass:[UIImageView class] forReuseIdentifier:kPageIdentifier]; [self.pagingScrollView reloadData]; } #pragma mark - GMCPagingScrollViewDataSource - (NSUInteger)numberOfPagesInPagingScrollView:(GMCPagingScrollView *)pagingScrollView { return [_dataArray count]; } - (UIView *)pagingScrollView:(GMCPagingScrollView *)pagingScrollView pageForIndex:(NSUInteger)index { UIImageView *page = [pagingScrollView dequeueReusablePageWithIdentifier:kPageIdentifier]; [page setImageWithURL:[NSURL URLWithString:_dataArray[index]]]; page.contentMode = UIViewContentModeScaleAspectFit; page.layer.masksToBounds = YES; return page; } - (void)pagingScrollViewDidScroll:(GMCPagingScrollView *)pagingScrollView { NSLog(@"x = %f", pagingScrollView.scrollView.contentOffset.x); } @end
[翻译] GMCPagingScrollView,布布扣,bubuko.com
标签:des style c class blog code
原文地址:http://www.cnblogs.com/YouXianMing/p/3746970.html