基于SDWebImage 缓存图片 针对ImageView和Button
/*********************************************************************************************
* __ __ _ _________ _ _ _ _________ __ _ __ *
* \ \ / / | | | _______| | | \ | | | ______ | \ \ / \ / / *
* \ \ / / | | | | | |\ \ | | | | | | \ \ / \ \ / / *
* \ \/ / | | | |______ | | \ \ | | | | | | \ \ / / \ \ / / *
* /\/\/\ | | |_______ | | | \ \| | | | | | \ \ / / \ \ / / *
* / / \ \ | |______ ______| | | | \ \ | | |_____| | \ \ / \ \ / *
* /_/ \_\ |________| |________| |_| \__| |_________| \_/ \_/ *
* *
*********************************************************************************************/
#import "XLImageURLCacher.h"
#import "UIImageView+WebCache.h"
#import "UIButton+WebCache.h"
#import "SDImageCache.h"
@interface XLImageURLCacher ()
@end
@implementation XLImageURLCacher
/**************************************************************************************************/
static XLImageURLCacher *instance = nil;
+ (XLImageURLCacher *)sharedImageURLCacher {
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
instance = [[self alloc] init];
});
return instance;
}
/**************************************************************************************************/
- (void)xl_setCacheWithImageView:(UIImageView *)imageView imageURL:(NSString *)imageURL imageKey:(NSString *)imageKey {
[imageView setShowActivityIndicatorView:YES];
[imageView setIndicatorStyle:UIActivityIndicatorViewStyleGray];//显示加载
imageView.contentMode = UIViewContentModeScaleAspectFill;
[imageView sd_setImageWithURL:[NSURL URLWithString:imageURL] placeholderImage:nil];
[[SDWebImageManager sharedManager].imageDownloader downloadImageWithURL:[NSURL URLWithString:imageURL] options:SDWebImageDownloaderContinueInBackground progress:^(NSInteger receivedSize, NSInteger expectedSize) {
} completed:^(UIImage *image, NSData *data, NSError *error, BOOL finished) {
[[SDWebImageManager sharedManager].imageCache storeImage:image forKey:imageKey toDisk:YES];// 缓存图片
}];
// 从缓存取图片并显示
UIImage *cacheImage = [[SDWebImageManager sharedManager].imageCache imageFromDiskCacheForKey:imageKey];
[imageView setImage:cacheImage];
}
/**************************************************************************************************/
- (void)xl_setCacheWithImageButton:(UIButton *)imageButton imageURL:(NSString *)imageURL imageKey:(NSString *)imageKey {
[imageButton sd_setImageWithURL:[NSURL URLWithString:imageURL] forState:(UIControlStateNormal) placeholderImage:nil];
[[SDWebImageManager sharedManager].imageDownloader downloadImageWithURL:[NSURL URLWithString:imageURL] options:SDWebImageDownloaderContinueInBackground progress:^(NSInteger receivedSize, NSInteger expectedSize) {
} completed:^(UIImage *image, NSData *data, NSError *error, BOOL finished) {
[[SDWebImageManager sharedManager].imageCache storeImage:image forKey:imageKey toDisk:YES];//缓存图片
}];
// 从缓存取图片并显示
UIImage *cacheImage = [[SDWebImageManager sharedManager].imageCache imageFromDiskCacheForKey:imageKey];
[imageButton setImage:cacheImage forState:(UIControlStateNormal)];
}
@end