SDWebImage设置UIImageView/UIButton的图片尺寸

注意：SDWebImage下载下来的网络图片默认展现图片自己的大小尺寸，所以要想改变图片的尺寸，必须在下面的方法中进行：

1 改变UIButton的图片尺寸: _iconBtn是已经有固定尺寸的button

[_iconBtn sd_setBackgroundImageWithURL:[NSURL URLWithString:categoryProductModel.ImageURL] forState:UIControlStateNormal completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {

        image = [image stretchableImageWithLeftCapWidth:0.5 topCapHeight:0.5];

        [_iconBtn setBackgroundImage:image forState:UIControlStateNormal];

    }];

 

2 改变UIImageView的图片尺寸：_iconView为已经有固定尺寸的UIImageView

   [_iconView sd_setImageWithURL:[NSURL URLWithString:pointProductModel.ImageURL]  placeholderImage:[UIImage imageNamed:@"X-storeLoding"] completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {

        image = [image stretchableImageWithLeftCapWidth:0.5 topCapHeight:0.5];

        _iconView.image = image;

    }];