iphone - 如何在 SDWebImage 中显示事件指示器

Question

目前我正在通过以下方式将 SDWebImage 集成到我的项目中

1)#import "UIButton+WebCache.h"

2)[按钮 setImageWithURL:url placeholderImage:[UIImage imageNamed:@"no_photo.png"]];

因此它将在相应按钮上方显示 URL 中存在的图像列表。

但是现在我想在下载图像时在按钮上方显示事件指示器，那么我该怎么做？

Answer 1

对我来说就像一个魅力:

swift 3:

imgView.setShowActivityIndicator(true)
imgView.setIndicatorStyle(.gray)
imgView.sd_setImage(with: URL(string: urlString), placeholderImage: UIImage(named: "placeholder"))

Swift 4:(编辑:更新)

imgView.sd_setShowActivityIndicatorView(true)
imgView.sd_setIndicatorStyle(.gray)
imgView.sd_setImage(with: URL(string: urlString), placeholderImage: UIImage(named: "placeholder"))

Swift 5:SDWebImage (5.x.x)

imgView.sd_imageIndicator = SDWebImageActivityIndicator.gray
imgView.sd_setImage(with: URL(string: urlString), placeholderImage: UIImage(named: "placeholder"))

更新:对于 UIButton 使用此

yourButton.sd_setImage(with: URL(string: urlString), for: .normal)