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

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 <UIKit/UIKit.h>

@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

使用源码：

//
//  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 ()<UITableViewDataSource, UITableViewDelegate>

@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:)