setBackgroundimage in UIButton using SDWebimage

问题

I want to set the UIButton background image using SDWebImage.

Code :-

[btn.imageView setImageWithURL:[NSURL URLWithString:@"image url here"]
                           placeholderImage:[UIImage imageNamed:@"placeholder"]];

Thanks

回答1:

There are method for this in SDWebImage : SDWebImage / SDWebImage / UIButton+WebCache.h

Import this file in your class:

#import <SDWebImage/UIButton+WebCache.h>

Use any of this method:

- (void)sd_setBackgroundImageWithURL:(NSURL *)url forState:(UIControlState)state;
- (void)sd_setBackgroundImageWithURL:(NSURL *)url forState:(UIControlState)state placeholderImage:(UIImage *)placeholder;
- (void)sd_setBackgroundImageWithURL:(NSURL *)url forState:(UIControlState)state placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options;
- (void)sd_setBackgroundImageWithURL:(NSURL *)url forState:(UIControlState)state completed:(SDWebImageCompletionBlock)completedBlock;
- (void)sd_setBackgroundImageWithURL:(NSURL *)url forState:(UIControlState)state placeholderImage:(UIImage *)placeholder completed:(SDWebImageCompletionBlock)completedBlock;
- (void)sd_setBackgroundImageWithURL:(NSURL *)url forState:(UIControlState)state placeholderImage:(UIImage *)placeholder options:(SDWebImageOptions)options completed:(SDWebImageCompletionBlock)completedBlock;

回答2:

You can directly set image to UIButton using SDWebImage

#import <SDWebImage/UIButton+WebCache.h>

 [btnProfilePic sd_setImageWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"IMAGE_URL_HERE"]]] forState:UIControlStateNormal];

Or using block

[btnProfilePic sd_setImageWithURL:[NSURL URLWithString:[NSString stringWithFormat:@"IMAGE_URL_HERE"]]] forState:UIControlStateNormal placeholderImage:UIImage imageNamed:@"placeholderImage.png"] completed:
    ^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {

    }];

回答3:

I totally agree with @CRDave, but if you have to make use of the UIImageView methods for something like setImageWithPreviousCachedImageWithURL (which as of writing isn't part of the UIButton category) then don't set the button background in the completion block otherwise your placeholder or progressive loading won't work. Rather set it like this:

    UIImageView *temp = [[UIImageView alloc] init];
    [temp sd_setImageWithPreviousCachedImageWithURL:[NSURL URLWithString:stringUrl] andPlaceholderImage:[UIImage imageNamed:@"loading.png"] options:SDWebImageRetryFailed progress:^(NSInteger receivedSize, NSInteger expectedSize) {
        //Nothing.
    } completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, NSURL *imageURL) {
        //Nothing.
    }];
    [btnTheButton setBackgroundImage:temp.image forState:UIControlStateNormal];

回答4:

UIImageView *imageViewb;
[imageViewb setImageWithURL:[NSURL URLWithString:@"image url here"]
                               placeholderImage:[UIImage imageNamed:@"placeholder"] completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType) {
                [button setImage: imageViewb.image forState:UIControlStateNormal];       
            }];

回答5:

if #import <SDWebImage/UIButton+WebCache.h> is not found then i think you have to use #import "UIButton+WebCache.h" instead of #import <SDWebImage/UIButton+WebCache.h>

This will work fine for me

回答6:

I have answered this here but for sake of ease I am reposting the answer: https://stackoverflow.com/a/56616298/3904109

cell.bProfileImage.sd_setBackgroundImage(with: URL(string:
individualChatsListArray[indexPath.row].profile_image), for:
UIControl.State.normal, placeholderImage: UIImage(named:
"default_profile"), options: SDWebImageOptions(rawValue: 0)) { (image,
error, cache, url) in

}

来源：https://stackoverflow.com/questions/19704334/setbackgroundimage-in-uibutton-using-sdwebimage

标签

ios

sdwebimage