SDWebImage加載圖像錯誤

Question

當我嘗試使用SDWebImage加載圖像時，顯示如下錯誤

<'UIImage'的無可見@interface聲明選擇器'sd_setImageWithURL：placeholderImage：'>

我試圖像這樣在tableview單元中的imageview中加載圖像：

[newsImage.image sd_setImageWithURL:[NSURL URLWithString:[jsonResult[indexPath.row] objectForKey:@"image"]]
                      placeholderImage:[UIImage imageNamed:@"tab.png"]];

Answer 1

更改

[newsImage.image sd_setImageWithURL:[NSURL URLWithString:[jsonResult[indexPath.row] objectForKey:@"image"]]
                  placeholderImage:[UIImage imageNamed:@"tab.png"]];

至

[newsImage sd_setImageWithURL:[NSURL URLWithString:[jsonResult[indexPath.row] objectForKey:@"image"]]
                  placeholderImage:[UIImage imageNamed:@"tab.png"]];

Answer 2

如果newsImage是您的UIImageView則代碼應如下所示。

[newsImage sd_setImageWithURL:[NSURL URLWithString:[jsonResult[indexPath.row] objectForKey:@"image"]]
                  placeholderImage:[UIImage imageNamed:@"tab.png"]];

-（void）sd_setImageWithURL：（NSURL *）url placeholderImage：（UIImage *）placeholder

上面的方法是針對UIImageView ，您將此方法應用於UIimage因此可能會崩潰。

Answer 3

在imageView而不是imageView.image上應用此方法

使用此代碼：

[newsImage sd_setImageWithURL:[NSURL URLWithString:[jsonResult[indexPath.row] objectForKey:@"image"]] placeholderImage:[UIImage imageNamed:@"tab.png"]];

也別忘了導入

#import <SDWebImage/UIImageView+WebCache.h>

Answer 4

請嘗試以下代碼-

在您的ViewController中添加- #import <SDWebImage/UIImageView+WebCache.h>

[newsImage  sd_setImageWithURL:[NSURL URLWithString:[jsonResult[indexPath.row]
                 placeholderImage:[UIImage imageNamed:@"tab.png"]
                          options:SDWebImageRefreshCached];