Hello,
We have functionality in an existing app, have to generate a pdf and it should be printable in the A4. The PDF is almost 8 to 10 pages
I have applied below solution:
Loading the HTML template on the WKwebview and doing a few operations on the content and converting it into a pdf.
Converting the HTML into a string
Replacing a few data with dynamic content
Issue:
The solutions worked fine in the previous OS(14.5,15.5,16.1), it is not working on the latest os 16.6
The Table background CSS is not Rendering. I have tried both Inline and external CSS loading but still facing the same issue.
Approch1:
func createPDF(formmatter: UIViewPrintFormatter, filename: String) -> String {
let attributedString = NSAttributedString(string: "This is a test", attributes: [NSAttributedString.Key.foregroundColor: UIColor.red])
let printFormatter = UISimpleTextPrintFormatter(attributedText: attributedString)
let render = UIPrintPageRenderer()
render.addPrintFormatter(printFormatter, startingAtPageAt: 0)
// 2. Assign print formatter to UIPrintPageRenderer
//let render = UIPrintPageRenderer()
render.addPrintFormatter(formmatter, 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: 20, dy: 20)
//let printable = page.inset(by: UIEdgeInsets(top: 10, left: 10, bottom: 10, right: 10));
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, CGRect.zero, nil)
for i in 1...render.numberOfPages {
UIGraphicsBeginPDFPage();
let bounds = UIGraphicsGetPDFContextBounds()
render.drawPage(at: i - 1, in: bounds)
}
UIGraphicsEndPDFContext();
// 5. Save PDF file
var dst = self.getDestinationPath(1)
if dst.contains("file://") {
dst = dst.replacingOccurrences(of: "file://", with: "")
}
//let path = "\(NSTemporaryDirectory())\(filename).pdf"
pdfData.write(toFile: dst, atomically: true)
print("open \(dst)")
return dst
}
}
Approach2:
But the pdf is Generating in a single page not multiple and it's not printable using the below solution.
func createPDFMethod(webView: WKWebView, title:String="samplepdf"){
let pdfConfiguration = WKPDFConfiguration()
/// Using `webView.scrollView.frame` allows us to capture the
// entire page, not just the visible portion
pdfConfiguration.rect = CGRect(x: 0, y: 0, width: webView.scrollView.contentSize.width, height: webView.scrollView.contentSize.height)
webView.createPDF(configuration: pdfConfiguration) { result in
switch result {
case .success(let data):
// Creates a path to the downloads directory
DispatchQueue.main.async {
let resourceDocPath = (FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)).last! as URL
let pdfNameFromUrl = "\(title).pdf"
let actualPath = resourceDocPath.appendingPathComponent(pdfNameFromUrl)
do {
try data.write(to: actualPath, options: .atomic)
print("pdf successfully saved!")
} catch {
print("Pdf could not be saved")
}
}
case .failure(let failure):
print(failure.localizedDescription)
}
}
}
It seems the issue is with UIGraphics or WKwebview formaters.
could you please help me to resolve this issue?