how to make UIImage as NULL in objective-c

问题

I have used the code :
UIImage *selectedImage;

then,

for (int j = 1 ; j <=b ; j++){
        id subView = [self.view viewWithTag:j];

        if ([subView isKindOfClass:[UIImageView class]]){
            ((UIImageView *)subView).image = selectedImage;

then how to make the UIImage as null value.

回答1:

Instead of making UIImage NULL set the Image as Empty Image

[UIImage imageNamed:@""]

回答2:

If you want to simply set your image to null, just do :

yourImage = nil;

If I missunderstood the question or if I'm wrong do not hesitate to let me know. :)

来源：https://stackoverflow.com/questions/46440627/how-to-make-uiimage-as-null-in-objective-c