objective-c - SDWebImage - setImageWithURL加载完成后执行任务的方法

Question

正如标题所说。鉴于:

[imageView setImageWithURL:[NSURL URLWithString:imageurl]];

图像加载(或从缓存中提取)并显示后执行任务的最佳方式是什么？

Answer 1

setImageWithURL API 是一种非常方便的方法，但您需要更多的控制，所以我建议您自己加载图像(很大程度上受到 https://github.com/rs/SDWebImage/blob/master/README.md 的启发):

SDWebImageManager *manager = [SDWebImageManager sharedManager];
UIImage *cachedImage = [manager imageWithURL:url];

if (cachedImage) {
    [imageView setImage:cachedImage];
    [self doMyOtherCustomStuff];
} else {
    [manager downloadWithURL:url delegate:self];
}

...

- (void)webImageManager:(SDWebImageManager *)imageManager didFinishWithImage:(UIImage *)image
{
    [imageView setImage:image];
    [self doMyOtherCustomStuff];
}

祝你好运!