ios - 使用SDWebImage 加载网络图片时，unrecognized selector sent to instance 。

Question

headImg = (UIImageView *)[cell.contentView viewWithTag:5];
NSURL *ImgURL = [NSURL URLWithString:cellData[@"avatar"]];
[headImg sd_setImageWithURL:ImgURL placeholderImage:[UIImage imageNamed:@"1.jpg"]];

Answer 1

Looking at it this way, there are two possibilities:
1.[UIImage imageNamed:@"1.jpg"] does not exist
2. Your ImgURL is not the correct URL format

Answer 2

In UIImageView, the method sd_setImageWithURL cannot be found.

Answer 3

The sd_setImageWithURL series of methods are in UIImageView+WebCache.h in SDWebImage. You need to import this header file

Answer 4

How did you install SDWebImageView? If it is Cocoapods, there should be no problem. The main problem is that the Category is not loaded successfully. You need to add the _ObjC tag. See its official documentation for details.

Answer 5

project --> build settings --> Other Linker Flags Add -Objc

Answer 6

After adding -ObjC, it still looks like this...

Answer 7

When dragging files in, for the second added folder, select the first one “creat groups!” Do not select the second one “creat folder references”