DPImageCache 是 Swift 寫成的 UIImageView 的擴展，能夠異步加載圖片然后緩存至本地文件。

Features

• Load image asynchronously.
• Cache local file-based.

How to use

• Import DPImageCache.swift

• Set default cache directory like this:

let dirName = "cache"
func createCacheDirectory() {
        var fileMan = NSFileManager.defaultManager()
        var cacheDir = (NSSearchPathForDirectoriesInDomains(
            .DocumentDirectory,
            .UserDomainMask, true)[0] as! NSString)
            .stringByAppendingPathComponent(dirName)
        if !fileMan.fileExistsAtPath(cacheDir) {
            fileMan.createDirectoryAtPath(
                cacheDir,
                withIntermediateDirectories: false,
                attributes: nil,
                error: nil)
        }
    }

• Simple code like this:

    var imgAddress = "http://blabla.com/blabla.png"
    imgView.setImageCacheWithAddress(
            imgAddress,
            placeHolderImage: UIImage(named: "placeHolderImage")!,
            cacheDirName: dirName)

項目主頁：http://www.baiduhome.net/lib/view/home/1435374152138