//
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// SDCycleScrollView.m
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// SDCycleScrollView
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//
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// Created by aier on 15-3-22.
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// Copyright (c) 2015年 GSD. All rights reserved.
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//
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/*
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*********************************************************************************
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*
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* 🌟🌟🌟 新建SDCycleScrollView交流QQ群：185534916 🌟🌟🌟
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*
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* 在您使用此自动轮播库的过程中如果出现bug请及时以以下任意一种方式联系我们，我们会及时修复bug并
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* 帮您解决问题。
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* 新浪微博:GSD_iOS
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* Email : gsdios@126.com
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* GitHub: https://github.com/gsdios
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*
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* 另（我的自动布局库SDAutoLayout）：
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* 一行代码搞定自动布局！支持Cell和Tableview高度自适应，Label和ScrollView内容自适应，致力于
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* 做最简单易用的AutoLayout库。
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* 视频教程：http://www.letv.com/ptv/vplay/24038772.html
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* 用法示例：https://github.com/gsdios/SDAutoLayout/blob/master/README.md
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* GitHub：https://github.com/gsdios/SDAutoLayout
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*********************************************************************************
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*/
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#import "SDCycleScrollView.h"
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#import "SDCollectionViewCell.h"
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#import "UIView+SDExtension.h"
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#import "TAPageControl.h"
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#import "SDWebImageManager.h"
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#import "UIImageView+WebCache.h"
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#define kCycleScrollViewInitialPageControlDotSize CGSizeMake(10, 10)
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NSString * const ID = @"SDCycleScrollViewCell";
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@interface SDCycleScrollView () <UICollectionViewDataSource, UICollectionViewDelegate>
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@property (nonatomic, weak) UICollectionView *mainView; // 显示图片的collectionView
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@property (nonatomic, weak) UICollectionViewFlowLayout *flowLayout;
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@property (nonatomic, strong) NSArray *imagePathsGroup;
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@property (nonatomic, weak) NSTimer *timer;
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@property (nonatomic, assign) NSInteger totalItemsCount;
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@property (nonatomic, weak) UIControl *pageControl;
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@property (nonatomic, strong) UIImageView *backgroundImageView; // 当imageURLs为空时的背景图
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@end
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@implementation SDCycleScrollView
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- (instancetype)initWithFrame:(CGRect)frame
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{
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if (self = [super initWithFrame:frame]) {
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[self initialization];
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[self setupMainView];
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}
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return self;
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}
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- (void)awakeFromNib
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{
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[super awakeFromNib];
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[self initialization];
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[self setupMainView];
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}
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- (void)initialization
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{
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_pageControlAliment = SDCycleScrollViewPageContolAlimentCenter;
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_autoScrollTimeInterval = 2.0;
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_titleLabelTextColor = [UIColor whiteColor];
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_titleLabelTextFont= [UIFont systemFontOfSize:14];
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_titleLabelBackgroundColor = [UIColor colorWithRed:0 green:0 blue:0 alpha:0.5];
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_titleLabelHeight = 30;
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_titleLabelTextAlignment = NSTextAlignmentLeft;
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_autoScroll = YES;
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_infiniteLoop = YES;
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_showPageControl = YES;
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_pageControlDotSize = kCycleScrollViewInitialPageControlDotSize;
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_pageControlBottomOffset = 0;
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_pageControlRightOffset = 0;
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_pageControlStyle = SDCycleScrollViewPageContolStyleClassic;
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_hidesForSinglePage = YES;
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_currentPageDotColor = [UIColor whiteColor];
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_pageDotColor = [UIColor lightGrayColor];
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_bannerImageViewContentMode = UIViewContentModeScaleToFill;
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self.backgroundColor = [UIColor lightGrayColor];
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}
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+ (instancetype)cycleScrollViewWithFrame:(CGRect)frame imageNamesGroup:(NSArray *)imageNamesGroup
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{
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SDCycleScrollView *cycleScrollView = [[self alloc] initWithFrame:frame];
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cycleScrollView.localizationImageNamesGroup = [NSMutableArray arrayWithArray:imageNamesGroup];
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return cycleScrollView;
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}
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+ (instancetype)cycleScrollViewWithFrame:(CGRect)frame shouldInfiniteLoop:(BOOL)infiniteLoop imageNamesGroup:(NSArray *)imageNamesGroup
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{
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SDCycleScrollView *cycleScrollView = [[self alloc] initWithFrame:frame];
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cycleScrollView.infiniteLoop = infiniteLoop;
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cycleScrollView.localizationImageNamesGroup = [NSMutableArray arrayWithArray:imageNamesGroup];
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return cycleScrollView;
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}
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+ (instancetype)cycleScrollViewWithFrame:(CGRect)frame imageURLStringsGroup:(NSArray *)imageURLsGroup
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{
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SDCycleScrollView *cycleScrollView = [[self alloc] initWithFrame:frame];
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cycleScrollView.imageURLStringsGroup = [NSMutableArray arrayWithArray:imageURLsGroup];
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return cycleScrollView;
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}
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+ (instancetype)cycleScrollViewWithFrame:(CGRect)frame delegate:(id<SDCycleScrollViewDelegate>)delegate placeholderImage:(UIImage *)placeholderImage
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{
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SDCycleScrollView *cycleScrollView = [[self alloc] initWithFrame:frame];
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cycleScrollView.delegate = delegate;
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cycleScrollView.placeholderImage = placeholderImage;
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return cycleScrollView;
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}
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// 设置显示图片的collectionView
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- (void)setupMainView
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{
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UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc] init];
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flowLayout.minimumLineSpacing = 0;
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flowLayout.scrollDirection = UICollectionViewScrollDirectionHorizontal;
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_flowLayout = flowLayout;
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UICollectionView *mainView = [[UICollectionView alloc] initWithFrame:self.bounds collectionViewLayout:flowLayout];
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mainView.backgroundColor = [UIColor clearColor];
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mainView.pagingEnabled = YES;
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mainView.showsHorizontalScrollIndicator = NO;
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mainView.showsVerticalScrollIndicator = NO;
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[mainView registerClass:[SDCollectionViewCell class] forCellWithReuseIdentifier:ID];
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mainView.dataSource = self;
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mainView.delegate = self;
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mainView.scrollsToTop = NO;
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[self addSubview:mainView];
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_mainView = mainView;
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}
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#pragma mark - properties
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- (void)setDelegate:(id<SDCycleScrollViewDelegate>)delegate
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{
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_delegate = delegate;
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if ([self.delegate respondsToSelector:@selector(customCollectionViewCellClassForCycleScrollView:)] && [self.delegate customCollectionViewCellClassForCycleScrollView:self]) {
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[self.mainView registerClass:[self.delegate customCollectionViewCellClassForCycleScrollView:self] forCellWithReuseIdentifier:ID];
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}else if ([self.delegate respondsToSelector:@selector(customCollectionViewCellNibForCycleScrollView:)] && [self.delegate customCollectionViewCellNibForCycleScrollView:self]) {
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[self.mainView registerNib:[self.delegate customCollectionViewCellNibForCycleScrollView:self] forCellWithReuseIdentifier:ID];
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}
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}
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- (void)setPlaceholderImage:(UIImage *)placeholderImage
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{
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_placeholderImage = placeholderImage;
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if (!self.backgroundImageView) {
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UIImageView *bgImageView = [UIImageView new];
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bgImageView.contentMode = UIViewContentModeScaleAspectFit;
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[self insertSubview:bgImageView belowSubview:self.mainView];
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self.backgroundImageView = bgImageView;
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}
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self.backgroundImageView.image = placeholderImage;
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}
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- (void)setPageControlDotSize:(CGSize)pageControlDotSize
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{
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_pageControlDotSize = pageControlDotSize;
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[self setupPageControl];
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if ([self.pageControl isKindOfClass:[TAPageControl class]]) {
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TAPageControl *pageContol = (TAPageControl *)_pageControl;
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pageContol.dotSize = pageControlDotSize;
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}
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}
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- (void)setShowPageControl:(BOOL)showPageControl
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{
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_showPageControl = showPageControl;
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_pageControl.hidden = !showPageControl;
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}
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- (void)setCurrentPageDotColor:(UIColor *)currentPageDotColor
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{
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_currentPageDotColor = currentPageDotColor;
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if ([self.pageControl isKindOfClass:[TAPageControl class]]) {
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TAPageControl *pageControl = (TAPageControl *)_pageControl;
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pageControl.dotColor = currentPageDotColor;
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} else {
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UIPageControl *pageControl = (UIPageControl *)_pageControl;
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pageControl.currentPageIndicatorTintColor = currentPageDotColor;
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}
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}
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- (void)setPageDotColor:(UIColor *)pageDotColor
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{
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_pageDotColor = pageDotColor;
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if ([self.pageControl isKindOfClass:[UIPageControl class]]) {
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UIPageControl *pageControl = (UIPageControl *)_pageControl;
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pageControl.pageIndicatorTintColor = pageDotColor;
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}
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}
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- (void)setCurrentPageDotImage:(UIImage *)currentPageDotImage
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{
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_currentPageDotImage = currentPageDotImage;
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if (self.pageControlStyle != SDCycleScrollViewPageContolStyleAnimated) {
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self.pageControlStyle = SDCycleScrollViewPageContolStyleAnimated;
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}
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[self setCustomPageControlDotImage:currentPageDotImage isCurrentPageDot:YES];
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}
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- (void)setPageDotImage:(UIImage *)pageDotImage
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{
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_pageDotImage = pageDotImage;
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if (self.pageControlStyle != SDCycleScrollViewPageContolStyleAnimated) {
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self.pageControlStyle = SDCycleScrollViewPageContolStyleAnimated;
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}
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[self setCustomPageControlDotImage:pageDotImage isCurrentPageDot:NO];
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}
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- (void)setCustomPageControlDotImage:(UIImage *)image isCurrentPageDot:(BOOL)isCurrentPageDot
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{
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if (!image || !self.pageControl) return;
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if ([self.pageControl isKindOfClass:[TAPageControl class]]) {
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TAPageControl *pageControl = (TAPageControl *)_pageControl;
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if (isCurrentPageDot) {
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pageControl.currentDotImage = image;
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} else {
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pageControl.dotImage = image;
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}
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}
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}
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- (void)setInfiniteLoop:(BOOL)infiniteLoop
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{
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_infiniteLoop = infiniteLoop;
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if (self.imagePathsGroup.count) {
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self.imagePathsGroup = self.imagePathsGroup;
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}
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}
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-(void)setAutoScroll:(BOOL)autoScroll{
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_autoScroll = autoScroll;
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[self invalidateTimer];
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if (_autoScroll) {
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[self setupTimer];
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}
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}
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- (void)setScrollDirection:(UICollectionViewScrollDirection)scrollDirection
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{
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_scrollDirection = scrollDirection;
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_flowLayout.scrollDirection = scrollDirection;
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}
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- (void)setAutoScrollTimeInterval:(CGFloat)autoScrollTimeInterval
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{
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_autoScrollTimeInterval = autoScrollTimeInterval;
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[self setAutoScroll:self.autoScroll];
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}
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- (void)setPageControlStyle:(SDCycleScrollViewPageContolStyle)pageControlStyle
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{
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_pageControlStyle = pageControlStyle;
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[self setupPageControl];
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}
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- (void)setImagePathsGroup:(NSArray *)imagePathsGroup
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{
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[self invalidateTimer];
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_imagePathsGroup = imagePathsGroup;
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_totalItemsCount = self.infiniteLoop ? self.imagePathsGroup.count * 100 : self.imagePathsGroup.count;
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if (imagePathsGroup.count > 1) { // 由于 !=1 包含count == 0等情况
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self.mainView.scrollEnabled = YES;
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[self setAutoScroll:self.autoScroll];
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} else {
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self.mainView.scrollEnabled = NO;
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[self invalidateTimer];
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}
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[self setupPageControl];
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[self.mainView reloadData];
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}
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- (void)setImageURLStringsGroup:(NSArray *)imageURLStringsGroup
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{
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_imageURLStringsGroup = imageURLStringsGroup;
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NSMutableArray *temp = [NSMutableArray new];
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[_imageURLStringsGroup enumerateObjectsUsingBlock:^(NSString * obj, NSUInteger idx, BOOL * stop) {
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NSString *urlString;
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if ([obj isKindOfClass:[NSString class]]) {
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urlString = obj;
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} else if ([obj isKindOfClass:[NSURL class]]) {
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NSURL *url = (NSURL *)obj;
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urlString = [url absoluteString];
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}
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if (urlString) {
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[temp addObject:urlString];
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}
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}];
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self.imagePathsGroup = [temp copy];
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}
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- (void)setLocalizationImageNamesGroup:(NSArray *)localizationImageNamesGroup
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{
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_localizationImageNamesGroup = localizationImageNamesGroup;
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self.imagePathsGroup = [localizationImageNamesGroup copy];
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}
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- (void)setTitlesGroup:(NSArray *)titlesGroup
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{
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_titlesGroup = titlesGroup;
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if (self.onlyDisplayText) {
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NSMutableArray *temp = [NSMutableArray new];
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for (int i = 0; i < _titlesGroup.count; i++) {
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[temp addObject:@""];
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}
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self.backgroundColor = [UIColor clearColor];
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self.imageURLStringsGroup = [temp copy];
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}
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}
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- (void)disableScrollGesture {
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self.mainView.canCancelContentTouches = NO;
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for (UIGestureRecognizer *gesture in self.mainView.gestureRecognizers) {
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if ([gesture isKindOfClass:[UIPanGestureRecognizer class]]) {
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[self.mainView removeGestureRecognizer:gesture];
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}
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}
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}
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#pragma mark - actions
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- (void)setupTimer
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{
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[self invalidateTimer]; // 创建定时器前先停止定时器，不然会出现僵尸定时器，导致轮播频率错误
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NSTimer *timer = [NSTimer scheduledTimerWithTimeInterval:self.autoScrollTimeInterval target:self selector:@selector(automaticScroll) userInfo:nil repeats:YES];
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_timer = timer;
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[[NSRunLoop mainRunLoop] addTimer:timer forMode:NSRunLoopCommonModes];
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}
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- (void)invalidateTimer
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{
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[_timer invalidate];
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_timer = nil;
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}
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- (void)setupPageControl
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{
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if (_pageControl) [_pageControl removeFromSuperview]; // 重新加载数据时调整
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if (self.imagePathsGroup.count == 0 || self.onlyDisplayText) return;
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if ((self.imagePathsGroup.count == 1) && self.hidesForSinglePage) return;
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int indexOnPageControl = [self pageControlIndexWithCurrentCellIndex:[self currentIndex]];
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switch (self.pageControlStyle) {
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case SDCycleScrollViewPageContolStyleAnimated:
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{
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TAPageControl *pageControl = [[TAPageControl alloc] init];
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pageControl.numberOfPages = self.imagePathsGroup.count;
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pageControl.dotColor = self.currentPageDotColor;
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pageControl.userInteractionEnabled = NO;
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pageControl.currentPage = indexOnPageControl;
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[self addSubview:pageControl];
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_pageControl = pageControl;
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}
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break;
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case SDCycleScrollViewPageContolStyleClassic:
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{
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UIPageControl *pageControl = [[UIPageControl alloc] init];
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pageControl.numberOfPages = self.imagePathsGroup.count;
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pageControl.currentPageIndicatorTintColor = self.currentPageDotColor;
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pageControl.pageIndicatorTintColor = self.pageDotColor;
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pageControl.userInteractionEnabled = NO;
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pageControl.currentPage = indexOnPageControl;
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[self addSubview:pageControl];
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_pageControl = pageControl;
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}
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break;
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default:
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break;
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}
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// 重设pagecontroldot图片
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if (self.currentPageDotImage) {
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self.currentPageDotImage = self.currentPageDotImage;
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}
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if (self.pageDotImage) {
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self.pageDotImage = self.pageDotImage;
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}
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}
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- (void)automaticScroll
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{
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if (0 == _totalItemsCount) return;
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int currentIndex = [self currentIndex];
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int targetIndex = currentIndex + 1;
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[self scrollToIndex:targetIndex];
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}
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- (void)scrollToIndex:(int)targetIndex
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{
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if (targetIndex >= _totalItemsCount) {
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if (self.infiniteLoop) {
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targetIndex = _totalItemsCount * 0.5;
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[_mainView scrollToItemAtIndexPath:[NSIndexPath indexPathForItem:targetIndex inSection:0] atScrollPosition:UICollectionViewScrollPositionNone animated:NO];
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}
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return;
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}
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[_mainView scrollToItemAtIndexPath:[NSIndexPath indexPathForItem:targetIndex inSection:0] atScrollPosition:UICollectionViewScrollPositionNone animated:YES];
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}
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- (int)currentIndex
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{
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if (_mainView.sd_width == 0 || _mainView.sd_height == 0) {
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return 0;
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}
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int index = 0;
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if (_flowLayout.scrollDirection == UICollectionViewScrollDirectionHorizontal) {
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index = (_mainView.contentOffset.x + _flowLayout.itemSize.width * 0.5) / _flowLayout.itemSize.width;
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} else {
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index = (_mainView.contentOffset.y + _flowLayout.itemSize.height * 0.5) / _flowLayout.itemSize.height;
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}
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return MAX(0, index);
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}
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- (int)pageControlIndexWithCurrentCellIndex:(NSInteger)index
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{
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return (int)index % self.imagePathsGroup.count;
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}
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- (void)clearCache
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{
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[[self class] clearImagesCache];
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}
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+ (void)clearImagesCache
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{
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[[[SDWebImageManager sharedManager] imageCache] clearDiskOnCompletion:nil];
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}
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#pragma mark - life circles
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- (void)layoutSubviews
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{
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self.delegate = self.delegate;
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[super layoutSubviews];
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_flowLayout.itemSize = self.frame.size;
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_mainView.frame = self.bounds;
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if (_mainView.contentOffset.x == 0 && _totalItemsCount) {
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int targetIndex = 0;
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if (self.infiniteLoop) {
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targetIndex = _totalItemsCount * 0.5;
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}else{
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targetIndex = 0;
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}
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[_mainView scrollToItemAtIndexPath:[NSIndexPath indexPathForItem:targetIndex inSection:0] atScrollPosition:UICollectionViewScrollPositionNone animated:NO];
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}
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CGSize size = CGSizeZero;
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if ([self.pageControl isKindOfClass:[TAPageControl class]]) {
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TAPageControl *pageControl = (TAPageControl *)_pageControl;
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if (!(self.pageDotImage && self.currentPageDotImage && CGSizeEqualToSize(kCycleScrollViewInitialPageControlDotSize, self.pageControlDotSize))) {
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pageControl.dotSize = self.pageControlDotSize;
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}
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size = [pageControl sizeForNumberOfPages:self.imagePathsGroup.count];
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} else {
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size = CGSizeMake(self.imagePathsGroup.count * self.pageControlDotSize.width * 1.5, self.pageControlDotSize.height);
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}
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CGFloat x = (self.sd_width - size.width) * 0.5;
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if (self.pageControlAliment == SDCycleScrollViewPageContolAlimentRight) {
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x = self.mainView.sd_width - size.width - 10;
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}
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CGFloat y = self.mainView.sd_height - size.height - 10;
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if ([self.pageControl isKindOfClass:[TAPageControl class]]) {
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TAPageControl *pageControl = (TAPageControl *)_pageControl;
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[pageControl sizeToFit];
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}
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CGRect pageControlFrame = CGRectMake(x, y, size.width, size.height);
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pageControlFrame.origin.y -= self.pageControlBottomOffset;
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pageControlFrame.origin.x -= self.pageControlRightOffset;
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self.pageControl.frame = pageControlFrame;
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self.pageControl.hidden = !_showPageControl;
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if (self.backgroundImageView) {
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self.backgroundImageView.frame = self.bounds;
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}
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}
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//解决当父View释放时，当前视图因为被Timer强引用而不能释放的问题
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- (void)willMoveToSuperview:(UIView *)newSuperview
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{
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if (!newSuperview) {
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[self invalidateTimer];
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}
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}
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//解决当timer释放后 回调scrollViewDidScroll时访问野指针导致崩溃
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- (void)dealloc {
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_mainView.delegate = nil;
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_mainView.dataSource = nil;
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}
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#pragma mark - public actions
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- (void)adjustWhenControllerViewWillAppera
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{
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long targetIndex = [self currentIndex];
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if (targetIndex < _totalItemsCount) {
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[_mainView scrollToItemAtIndexPath:[NSIndexPath indexPathForItem:targetIndex inSection:0] atScrollPosition:UICollectionViewScrollPositionNone animated:NO];
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}
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}
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#pragma mark - UICollectionViewDataSource
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- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
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{
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return _totalItemsCount;
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}
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- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
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{
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SDCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:ID forIndexPath:indexPath];
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long itemIndex = [self pageControlIndexWithCurrentCellIndex:indexPath.item];
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if ([self.delegate respondsToSelector:@selector(setupCustomCell:forIndex:cycleScrollView:)] &&
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[self.delegate respondsToSelector:@selector(customCollectionViewCellClassForCycleScrollView:)] && [self.delegate customCollectionViewCellClassForCycleScrollView:self]) {
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[self.delegate setupCustomCell:cell forIndex:itemIndex cycleScrollView:self];
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return cell;
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}else if ([self.delegate respondsToSelector:@selector(setupCustomCell:forIndex:cycleScrollView:)] &&
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[self.delegate respondsToSelector:@selector(customCollectionViewCellNibForCycleScrollView:)] && [self.delegate customCollectionViewCellNibForCycleScrollView:self]) {
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[self.delegate setupCustomCell:cell forIndex:itemIndex cycleScrollView:self];
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return cell;
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}
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NSString *imagePath = self.imagePathsGroup[itemIndex];
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if (!self.onlyDisplayText && [imagePath isKindOfClass:[NSString class]]) {
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if ([imagePath hasPrefix:@"http"]) {
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[cell.imageView sd_setImageWithURL:[NSURL URLWithString:imagePath] placeholderImage:self.placeholderImage];
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} else {
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UIImage *image = [UIImage imageNamed:imagePath];
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if (!image) {
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image = [UIImage imageWithContentsOfFile:imagePath];
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}
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cell.imageView.image = image;
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}
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} else if (!self.onlyDisplayText && [imagePath isKindOfClass:[UIImage class]]) {
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cell.imageView.image = (UIImage *)imagePath;
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}
|
|
if (_titlesGroup.count && itemIndex < _titlesGroup.count) {
|
cell.title = _titlesGroup[itemIndex];
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}
|
|
if (!cell.hasConfigured) {
|
cell.titleLabelBackgroundColor = self.titleLabelBackgroundColor;
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cell.titleLabelHeight = self.titleLabelHeight;
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cell.titleLabelTextAlignment = self.titleLabelTextAlignment;
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cell.titleLabelTextColor = self.titleLabelTextColor;
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cell.titleLabelTextFont = self.titleLabelTextFont;
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cell.hasConfigured = YES;
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cell.imageView.contentMode = self.bannerImageViewContentMode;
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cell.clipsToBounds = YES;
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cell.onlyDisplayText = self.onlyDisplayText;
|
}
|
|
return cell;
|
}
|
|
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
|
{
|
if ([self.delegate respondsToSelector:@selector(cycleScrollView:didSelectItemAtIndex:)]) {
|
[self.delegate cycleScrollView:self didSelectItemAtIndex:[self pageControlIndexWithCurrentCellIndex:indexPath.item]];
|
}
|
if (self.clickItemOperationBlock) {
|
self.clickItemOperationBlock([self pageControlIndexWithCurrentCellIndex:indexPath.item]);
|
}
|
}
|
|
|
#pragma mark - UIScrollViewDelegate
|
|
- (void)scrollViewDidScroll:(UIScrollView *)scrollView
|
{
|
if (!self.imagePathsGroup.count) return; // 解决清除timer时偶尔会出现的问题
|
int itemIndex = [self currentIndex];
|
int indexOnPageControl = [self pageControlIndexWithCurrentCellIndex:itemIndex];
|
|
if ([self.pageControl isKindOfClass:[TAPageControl class]]) {
|
TAPageControl *pageControl = (TAPageControl *)_pageControl;
|
pageControl.currentPage = indexOnPageControl;
|
} else {
|
UIPageControl *pageControl = (UIPageControl *)_pageControl;
|
pageControl.currentPage = indexOnPageControl;
|
}
|
}
|
|
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView
|
{
|
if (self.autoScroll) {
|
[self invalidateTimer];
|
}
|
}
|
|
- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate
|
{
|
if (self.autoScroll) {
|
[self setupTimer];
|
}
|
}
|
|
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
|
{
|
[self scrollViewDidEndScrollingAnimation:self.mainView];
|
}
|
|
- (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView
|
{
|
if (!self.imagePathsGroup.count) return; // 解决清除timer时偶尔会出现的问题
|
int itemIndex = [self currentIndex];
|
int indexOnPageControl = [self pageControlIndexWithCurrentCellIndex:itemIndex];
|
|
if ([self.delegate respondsToSelector:@selector(cycleScrollView:didScrollToIndex:)]) {
|
[self.delegate cycleScrollView:self didScrollToIndex:indexOnPageControl];
|
} else if (self.itemDidScrollOperationBlock) {
|
self.itemDidScrollOperationBlock(indexOnPageControl);
|
}
|
}
|
|
- (void)makeScrollViewScrollToIndex:(NSInteger)index{
|
if (self.autoScroll) {
|
[self invalidateTimer];
|
}
|
if (0 == _totalItemsCount) return;
|
|
[self scrollToIndex:(int)(_totalItemsCount * 0.5 + index)];
|
|
if (self.autoScroll) {
|
[self setupTimer];
|
}
|
}
|
|
@end
|
