测试SDWebImage淡入淡出效果在UITableView中的重用显示问题

这个是在上一篇教程的基础上所添加的测试环节！

效果图（从效果图中看是没有任何重用问题的）：

源码：

ImageCell.h 与 ImageCell.m

////  ImageCell.h//  SDWebImageFade////  Created by YouXianMing on 14-10-5.//  Copyright (c) 2014年 YouXianMing. All rights reserved.//#import 
    
     @interface ImageCell : UITableViewCell@property (nonatomic, strong) UIImageView *bigImageView;@end
    

////  ImageCell.m//  SDWebImageFade////  Created by YouXianMing on 14-10-5.//  Copyright (c) 2014年 YouXianMing. All rights reserved.//#import "ImageCell.h"@implementation ImageCell- (instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{    self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];    if (self) {        _bigImageView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 0, 250, 400)];        [self addSubview:_bigImageView];    }    return self;}- (void)setSelected:(BOOL)selected animated:(BOOL)animated {    [super setSelected:selected animated:animated];    // Configure the view for the selected state}@end

////  ViewController.m//  SDWebImageFade////  Created by YouXianMing on 14-10-5.//  Copyright (c) 2014年 YouXianMing. All rights reserved.//#import "ViewController.h"#import "UIImageView+WebCache.h"#import "ImageCell.h"@interface ViewController ()
    
     @property (nonatomic, strong) UITableView  *tableView;@property (nonatomic, strong) NSArray      *dataArray;@end@implementation ViewController- (void)viewDidLoad {    [super viewDidLoad];        NSLog(@"%@", NSHomeDirectory());        _dataArray = @[@"http://fc04.deviantart.net/fs70/f/2014/277/d/d/swan_song_by_lilyas-d81jjz1.jpg",                   @"http://fc08.deviantart.net/fs71/f/2013/103/8/d/8ddafeb73b9e146eef84cc0d45b4fe32-d61mj0f.jpg",                   @"http://fc08.deviantart.net/fs70/f/2013/120/8/1/pulsatilla_vulgaris_600_by_lilyas-d63la7p.jpg",                   @"http://fc01.deviantart.net/fs71/f/2012/160/c/0/c0690c165b549cc08b006943fcbcb542-d52u5nk.jpg",                   @"http://fc03.deviantart.net/fs71/f/2012/199/5/9/5978d4f115b1a70ed0cf6da4dc0cd164-d57qdzg.jpg",                   @"http://fc05.deviantart.net/fs70/f/2013/292/c/e/evening_star_by_lilyas-d6r3698.png",                   @"http://fc08.deviantart.net/fs70/i/2014/112/6/b/late_night_rose_by_lilyas-d63iu9y.jpg"];        _tableView = [[UITableView alloc] initWithFrame:self.view.bounds                                              style:UITableViewStylePlain];    _tableView.delegate   = self;    _tableView.dataSource = self;    [self.view addSubview:_tableView];}- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    return [_dataArray count];}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{    static NSString *flag = @"YouXianMing";    ImageCell *cell = [tableView dequeueReusableCellWithIdentifier:flag];    if (cell == nil) {        cell = [[ImageCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:flag];        cell.selectionStyle = UITableViewCellSelectionStyleNone;    }        NSString *urlStr = _dataArray[indexPath.row];    [cell.bigImageView setImageWithURL:[NSURL URLWithString:urlStr]                      placeholderImage:nil                               options:SDWebImageCacheMemoryOnly];        return cell;}- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{    return 400;}@end
    

核心源码地方：

以下是测试的地方：

结论：

不会引起重用问题:)