URL Request about ios-pdf-reader HOT 4 CLOSED

private func downloadAndDisplayPDF() {
    let url = NSURL(string: "http://images.apple.com/environment/pdf/products/watch/AppleWatch_PER_sept2015.pdf")!
    let data = NSData(contentsOfURL: url)
    let cachesDirectory = NSFileManager.defaultManager().URLsForDirectory(.CachesDirectory, inDomains: .UserDomainMask).first!

    do {
        let documentsFolder = cachesDirectory.URLByAppendingPathComponent("documents")
        try NSFileManager.defaultManager().createDirectoryAtURL(documentsFolder, withIntermediateDirectories: true, attributes: nil)

        let tempFileURL = documentsFolder.URLByAppendingPathComponent("example").URLByAppendingPathExtension("pdf")
        try data?.writeToURL(tempFileURL, options: .AtomicWrite)

        let document = PDFDocument(fileURL: tempFileURL)
        showDocument(document)
    } catch {
        print("Failed")
    }
}