將 SDWebImageManager.m 文件中的 downloadImageWithURL 方法中的 ( 代碼在176行 )
if (image && options & SDWebImageRefreshCached) {
// force progressive off if image already cached but forced refreshing
downloaderOptions &= ~SDWebImageDownloaderProgressiveDownload;
// ignore image read from NSURLCache if image if cached but force refreshing
downloaderOptions |= SDWebImageDownloaderIgnoreCachedResponse;
}
替換成
if (image && options & SDWebImageRefreshCached) {
// force progressive off if image already cached but forced refreshing
downloaderOptions &= ~SDWebImageDownloaderProgressiveDownload;
// remove SDWebImageDownloaderUseNSURLCache flag
downloaderOptions &= ~SDWebImageDownloaderUseNSURLCache;
// ignore image read from NSURLCache if image is cached but force refreshing
downloaderOptions |= SDWebImageDownloaderIgnoreCachedResponse;
}
之后在工程中使用如下方法:
[self.imageView sd_setImageWithURL:[NSURL URLWithString:url] placeholderImage:[UIImage new] options:SDWebImageRefreshCached];
