Need a dummy PDF? Here’s a small method that will do all the heavy lifting. Just add to your test and call it. It’s just that simple.
func createPDF()
{
let html = "<b>Hello <i>World!</i></b> <p>Generate PDF file from HTML in Swift</p>"
let fmt = UIMarkupTextPrintFormatter(markupText: html)
// 2. Assign print formatter to UIPrintPageRenderer
let render = UIPrintPageRenderer()
render.addPrintFormatter(fmt, startingAtPageAt: 0)
// 3. Assign paperRect and printableRect
let page = CGRect(x: 0, y: 0, width: 595.2, height: 841.8) // A4, 72 dpi
let printable = page.insetBy(dx: 0, dy: 0)
render.setValue(NSValue(cgRect: page), forKey: "paperRect")
render.setValue(NSValue(cgRect: printable), forKey: "printableRect")
// 4. Create PDF context and draw
let pdfData = NSMutableData()
UIGraphicsBeginPDFContextToData(pdfData, .zero, nil)
for i in 1...render.numberOfPages {
UIGraphicsBeginPDFPage();
let bounds = UIGraphicsGetPDFContextBounds()
render.drawPage(at: i - 1, in: bounds)
}
UIGraphicsEndPDFContext();
// 5. Save PDF file
let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
pdfData.write(toFile: "\(documentsPath)/file.pdf", atomically: true)
}
Then I loaded it into a WKWebView from the documents directory with this code:
func loadPDF(filename: String)
{
let documentsPath = NSSearchPathForDirectoriesInDomains(.documentDirectory, .userDomainMask, true)[0]
let url = URL(fileURLWithPath: documentsPath, isDirectory: true).appendingPathComponent(filename).appendingPathExtension("pdf")
let urlRequest = URLRequest(url: url)
webView.loadRequest(urlRequest)
}