SDWebImage Unrecognised Selector

Question

I am getting the following crash while displaying the image in cell. UIImageView sd_setImageWithURL:placeholderImage:completed:]: unrecognized selector sent to instance 0x7fbce1521e70" I followed all the instruction provided but still not able to get anything, I set the other linker flagto-Objc` but still getting the same error.

reference image of cell My Code:

 UIImageView *img = (UIImageView *)[cell.contentView viewWithTag:1];
    NSLog(@"%@",[NSString stringWithFormat:@"%@thumb_%@",kImageUrl,[dict objectForKey:@"student_photo"]]);


    [img sd_setImageWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@thumb_%@",kImageUrl,[dict objectForKey:@"student_photo"]]]
                      placeholderImage:[UIImage imageNamed:@"not_found.png"]];

Are you sure `[cell.contentView viewWithTag:1]` really is an `UIImageView`? — Gereon, Nov 02 '18 at 08:16
I dint use pod I copied the source file and it is the latest version — Rahul, Nov 02 '18 at 08:17
`img` is not an image for sure, check if `[cell.contentView viewWithTag:1]` really an `UIImageView` — Satish, Nov 02 '18 at 08:18
the cell is created by storyboard , it is like the cell contains a content view and the content view have UIimage and UILabel — Rahul, Nov 02 '18 at 09:10
post the code from cell which contains label and image view. — Mahendra, Nov 02 '18 at 09:42
also add screenshot of cell view hierarchy from story board. — Mahendra, Nov 02 '18 at 09:43

score 0 · Answer 1 · answered Nov 02 '18 at 08:31

0

You can check the type of the view that you get to avoid crash.

UIImageView *img = (UIImageView *)[cell.contentView viewWithTag:1];
if ([img isKindOfClass:[UIImageView class]]) { //it will true if img is kind of UIImageView

    [img sd_setImageWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"%@thumb_%@",kImageUrl,[dict objectForKey:@"student_photo"]]]
           placeholderImage:[UIImage imageNamed:@"not_found.png"]];
} else {
   NSLog(@"It is not an image view.")
}

You need to set 'tag = 1' to your image view in `cell otherwise your image will never fill with an image.

answered Nov 02 '18 at 08:31

Mahendra

8,448
3
33
56

In the custom cell I need to set tag? – Rahul Nov 02 '18 at 09:20
Yes, in cell you need to set like `cell.yourImageView.tag = 1;` – Mahendra Nov 02 '18 at 09:29

score 0 · Answer 2 · answered Nov 02 '18 at 09:07

Based on your crash log and code below

UIImageView *img = (UIImageView *)[cell.contentView viewWithTag:1];

The variable img might be nil or some other view. Double check your imageView's tag.

If everything is correct, check your cell xib(there should not be any error or warning in IBOutlet connection), if you've created a custom cell using xib.

score -1 · Answer 3 · answered Nov 02 '18 at 09:38

-1

Please try to set "other linker flag" to "-ObjC" instead of "_Objc"

It worked for me.

answered Nov 02 '18 at 09:38

kanhaiya choudhary

47
6

I have set to -Objc only – Rahul Nov 02 '18 at 09:39

SDWebImage Unrecognised Selector

3 Answers3