placeholderImage not show

[wangpeng1]

if the image url is exist,and not have image ; for example :people.avatarbig http://ws.loc.sh/images/515b9f54e4b04a5a481030f9

if(![GlobalVariable isBlankString:people.avatarbig]){

       [cell.headImage setImageWithURL:[NSURL URLWithString:people.avatarbig]
                    placeholderImage:[UIImage imageNamed:@"default_user.png"]];

    }else{
        cell.headImage.image=[UIImage imageNamed:@"default_user.png"];
    }

my cell.headImage not show the default_user.png ,and show nothing

[wangpeng1]

i think this is a bug ,and should modify the UIImage *SDScaledImageForPath(NSString *path, NSObject *imageOrData) method: if (image &&[[UIScreen mainScreen] respondsToSelector:@selector(scale)]) not if ( [[UIScreen mainScreen] respondsToSelector:@selector(scale)])