233 lines
10 KiB
Objective-C
233 lines
10 KiB
Objective-C
//
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// YYWebImageExample.m
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// YYKitExample
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//
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// Created by ibireme on 15/7/19.
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// Copyright (c) 2015 ibireme. All rights reserved.
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//
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#import "YYWebImageExample.h"
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#import <YYKit/YYKit.h>
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#define kCellHeight ceil((kScreenWidth) * 3.0 / 4.0)
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@interface YYWebImageExampleCell : UITableViewCell
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@property (nonatomic, strong) YYAnimatedImageView *webImageView;
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@property (nonatomic, strong) UIActivityIndicatorView *indicator;
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@property (nonatomic, strong) CAShapeLayer *progressLayer;
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@property (nonatomic, strong) UILabel *label;
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@end
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@implementation YYWebImageExampleCell
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- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier {
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self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
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self.backgroundColor = [UIColor clearColor];
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self.contentView.backgroundColor = [UIColor clearColor];
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self.size = CGSizeMake(kScreenWidth, kCellHeight);
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self.contentView.size = self.size;
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_webImageView = [YYAnimatedImageView new];
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_webImageView.size = self.size;
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_webImageView.clipsToBounds = YES;
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_webImageView.contentMode = UIViewContentModeScaleAspectFill;
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_webImageView.backgroundColor = [UIColor whiteColor];
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[self.contentView addSubview:_webImageView];
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_indicator = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];
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_indicator.center = CGPointMake(self.width / 2, self.height / 2);
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_indicator.hidden = YES;
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//[self.contentView addSubview:_indicator]; //use progress bar instead..
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_label = [UILabel new];
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_label.size = self.size;
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_label.textAlignment = NSTextAlignmentCenter;
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_label.text = @"Load fail, tap to reload.";
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_label.textColor = [UIColor colorWithWhite:0.7 alpha:1.0];
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_label.hidden = YES;
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_label.userInteractionEnabled = YES;
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[self.contentView addSubview:_label];
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CGFloat lineHeight = 4;
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_progressLayer = [CAShapeLayer layer];
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_progressLayer.size = CGSizeMake(_webImageView.width, lineHeight);
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UIBezierPath *path = [UIBezierPath bezierPath];
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[path moveToPoint:CGPointMake(0, _progressLayer.height / 2)];
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[path addLineToPoint:CGPointMake(_webImageView.width, _progressLayer.height / 2)];
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_progressLayer.lineWidth = lineHeight;
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_progressLayer.path = path.CGPath;
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_progressLayer.strokeColor = [UIColor colorWithRed:0.000 green:0.640 blue:1.000 alpha:0.720].CGColor;
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_progressLayer.lineCap = kCALineCapButt;
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_progressLayer.strokeStart = 0;
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_progressLayer.strokeEnd = 0;
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[_webImageView.layer addSublayer:_progressLayer];
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__weak typeof(self) _self = self;
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UITapGestureRecognizer *g = [[UITapGestureRecognizer alloc] initWithActionBlock:^(id sender) {
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[_self setImageURL:_self.webImageView.imageURL];
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}];
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[_label addGestureRecognizer:g];
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return self;
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}
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- (void)setImageURL:(NSURL *)url {
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_label.hidden = YES;
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_indicator.hidden = NO;
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[_indicator startAnimating];
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__weak typeof(self) _self = self;
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[CATransaction begin];
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[CATransaction setDisableActions: YES];
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self.progressLayer.hidden = YES;
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self.progressLayer.strokeEnd = 0;
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[CATransaction commit];
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[_webImageView setImageWithURL:url
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placeholder:nil
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options:YYWebImageOptionProgressiveBlur | YYWebImageOptionShowNetworkActivity | YYWebImageOptionSetImageWithFadeAnimation
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progress:^(NSInteger receivedSize, NSInteger expectedSize) {
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if (expectedSize > 0 && receivedSize > 0) {
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CGFloat progress = (CGFloat)receivedSize / expectedSize;
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progress = progress < 0 ? 0 : progress > 1 ? 1 : progress;
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if (_self.progressLayer.hidden) _self.progressLayer.hidden = NO;
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_self.progressLayer.strokeEnd = progress;
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}
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} transform:nil
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completion:^(UIImage *image, NSURL *url, YYWebImageFromType from, YYWebImageStage stage, NSError *error) {
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if (stage == YYWebImageStageFinished) {
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_self.progressLayer.hidden = YES;
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[_self.indicator stopAnimating];
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_self.indicator.hidden = YES;
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if (!image) _self.label.hidden = NO;
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}
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}];
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}
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- (void)prepareForReuse {
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//nothing
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}
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@end
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@implementation YYWebImageExample {
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NSArray *_imageLinks;
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}
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- (void)viewDidLoad {
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[super viewDidLoad];
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self.tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
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self.view.backgroundColor = [UIColor whiteColor];
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UIBarButtonItem *button = [[UIBarButtonItem alloc] initWithTitle:@"Reload" style:UIBarButtonItemStylePlain target:self action:@selector(reload)];
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self.navigationItem.rightBarButtonItem = button;
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self.view.backgroundColor = [UIColor colorWithWhite:0.217 alpha:1.000];
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NSArray *links = @[
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/*
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You can add your image url here.
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*/
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// progressive jpeg
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@"https://s-media-cache-ak0.pinimg.com/1200x/2e/0c/c5/2e0cc5d86e7b7cd42af225c29f21c37f.jpg",
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// animated gif: http://cinemagraphs.com/
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@"http://i.imgur.com/uoBwCLj.gif",
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@"http://i.imgur.com/8KHKhxI.gif",
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@"http://i.imgur.com/WXJaqof.gif",
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// animated gif: https://dribbble.com/markpear
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@"https://d13yacurqjgara.cloudfront.net/users/345826/screenshots/1780193/dots18.gif",
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@"https://d13yacurqjgara.cloudfront.net/users/345826/screenshots/1809343/dots17.1.gif",
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@"https://d13yacurqjgara.cloudfront.net/users/345826/screenshots/1845612/dots22.gif",
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@"https://d13yacurqjgara.cloudfront.net/users/345826/screenshots/1820014/big-hero-6.gif",
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@"https://d13yacurqjgara.cloudfront.net/users/345826/screenshots/1819006/dots11.0.gif",
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@"https://d13yacurqjgara.cloudfront.net/users/345826/screenshots/1799885/dots21.gif",
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// animaged gif: https://dribbble.com/jonadinges
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@"https://d13yacurqjgara.cloudfront.net/users/288987/screenshots/2025999/batman-beyond-the-rain.gif",
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@"https://d13yacurqjgara.cloudfront.net/users/288987/screenshots/1855350/r_nin.gif",
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@"https://d13yacurqjgara.cloudfront.net/users/288987/screenshots/1963497/way-back-home.gif",
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@"https://d13yacurqjgara.cloudfront.net/users/288987/screenshots/1913272/depressed-slurp-cycle.gif",
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// jpg: https://dribbble.com/snootyfox
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@"https://d13yacurqjgara.cloudfront.net/users/26059/screenshots/2047158/beerhenge.jpg",
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@"https://d13yacurqjgara.cloudfront.net/users/26059/screenshots/2016158/avalanche.jpg",
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@"https://d13yacurqjgara.cloudfront.net/users/26059/screenshots/1839353/pilsner.jpg",
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@"https://d13yacurqjgara.cloudfront.net/users/26059/screenshots/1833469/porter.jpg",
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@"https://d13yacurqjgara.cloudfront.net/users/26059/screenshots/1521183/farmers.jpg",
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@"https://d13yacurqjgara.cloudfront.net/users/26059/screenshots/1391053/tents.jpg",
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@"https://d13yacurqjgara.cloudfront.net/users/26059/screenshots/1399501/imperial_beer.jpg",
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@"https://d13yacurqjgara.cloudfront.net/users/26059/screenshots/1488711/fishin.jpg",
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@"https://d13yacurqjgara.cloudfront.net/users/26059/screenshots/1466318/getaway.jpg",
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// animated webp and apng: http://littlesvr.ca/apng/gif_apng_webp.html
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@"http://littlesvr.ca/apng/images/BladeRunner.png",
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@"http://littlesvr.ca/apng/images/Contact.webp",
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];
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_imageLinks = links;
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[self.tableView reloadData];
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[self scrollViewDidScroll:self.tableView];
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}
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- (void)viewDidAppear:(BOOL)animated {
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[super viewDidAppear:animated];
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if (kiOS7Later) {
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self.navigationController.navigationBar.barStyle = UIBarStyleBlack;
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self.navigationController.navigationBar.tintColor = [UIColor whiteColor];
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}
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[UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleLightContent;
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}
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- (void)viewWillDisappear:(BOOL)animated {
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[super viewWillDisappear:animated];
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if (kiOS7Later) {
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self.navigationController.navigationBar.barStyle = UIBarStyleDefault;
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self.navigationController.navigationBar.tintColor = nil;
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}
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[UIApplication sharedApplication].statusBarStyle = UIStatusBarStyleDefault;
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}
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- (void)reload {
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[[YYImageCache sharedCache].memoryCache removeAllObjects];
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[[YYImageCache sharedCache].diskCache removeAllObjectsWithBlock:nil];
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[self.tableView performSelector:@selector(reloadData) afterDelay:0.1];
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}
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- (BOOL)tableView:(UITableView *)tableView shouldHighlightRowAtIndexPath:(NSIndexPath *)indexPath {
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return NO;
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}
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- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
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return _imageLinks.count * 4;
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}
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- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath {
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return kCellHeight;
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}
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- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
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YYWebImageExampleCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
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if (!cell) cell = [[YYWebImageExampleCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"cell"];
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[cell setImageURL:[NSURL URLWithString:_imageLinks[indexPath.row % _imageLinks.count]]];
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return cell;
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}
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- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
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CGFloat viewHeight = scrollView.height + scrollView.contentInset.top;
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for (YYWebImageExampleCell *cell in [self.tableView visibleCells]) {
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CGFloat y = cell.centerY - scrollView.contentOffset.y;
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CGFloat p = y - viewHeight / 2;
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CGFloat scale = cos(p / viewHeight * 0.8) * 0.95;
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if (kiOS8Later) {
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[UIView animateWithDuration:0.15 delay:0 options:UIViewAnimationOptionCurveEaseInOut | UIViewAnimationOptionAllowUserInteraction | UIViewAnimationOptionBeginFromCurrentState animations:^{
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cell.webImageView.transform = CGAffineTransformMakeScale(scale, scale);
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} completion:NULL];
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} else {
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cell.webImageView.transform = CGAffineTransformMakeScale(scale, scale);
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}
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}
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}
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@end
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