I'm trying to convert a view (ScrollView) to PDF, on my physical device iPhone 7 with iOS 15.8 it works perfectly, but on my friends' iPhone 11 and iPhone 13 both with iOS 17+ the application crashes at the time of conversion, it also crashes in the xCode preview and in the Simulators without showing errors.
I call the function like this:
Button(action: {
if included && !saving {
if signatureImage != nil {
exportPDF(name: "ToR-(patient.name)-(patient.id)") {
self
} completion: { status, url in
if let url = url, status {
self.PDFUrl = url
self.showActionSheet.toggle()
print("URL => (url) - Status (status)")
} else {
print("Failed")
}
}
} else {
self.scrollToBottom = true
}
}
}) {
if saving {
ProgressView()
.tint(Color("MainColor"))
.scaleEffect(1.5)
} else {
Text(NSLocalizedString("Save", comment: ""))
}
}
And the function is this:
import SwiftUI
import UIKit
extension View {
func convertToScrollView<Content: View>(@ViewBuilder content: @escaping () -> Content) -> UIScrollView {
let scrollView = UIScrollView()
let hostingController = UIHostingController(rootView: content()).view!
hostingController.translatesAutoresizingMaskIntoConstraints = false
let constraints = [
hostingController.leadingAnchor.constraint(equalTo: scrollView.leadingAnchor),
hostingController.trailingAnchor.constraint(equalTo: scrollView.trailingAnchor),
hostingController.topAnchor.constraint(equalTo: scrollView.topAnchor),
hostingController.bottomAnchor.constraint(equalTo: scrollView.bottomAnchor),
hostingController.widthAnchor.constraint(equalToConstant: screenBounds().width)
]
scrollView.addSubview(hostingController)
scrollView.addConstraints(constraints)
scrollView.layoutIfNeeded()
return scrollView
}
func exportPDF<Content: View>(name: String, @ViewBuilder content: @escaping () -> Content, completion: @escaping (Bool, URL?) -> ()) {
let documentDirectory = FileManager.default.urls(for: .cachesDirectory, in: .userDomainMask).first!
let outputFileURL = documentDirectory.appendingPathComponent("\(name).pdf")
let pdfView = convertToScrollView {
content()
}
pdfView.tag = 1009
let size = pdfView.contentSize
pdfView.frame = CGRect(x: 0, y: getSafeArea().top, width: size.width, height: size.height)
getRootController().view.insertSubview(pdfView, at: 0)
let renderer = UIGraphicsPDFRenderer(bounds: CGRect(x: 0, y: 0, width: size.width, height: size.height))
do {
try renderer.writePDF(to: outputFileURL, withActions: { context in
context.beginPage()
pdfView.layer.render(in: context.cgContext)
})
completion(true, outputFileURL)
}
catch {
completion(false, nil)
print(error.localizedDescription)
}
getRootController().view.subviews.forEach { view in
if view.tag == 1009 {
view.removeFromSuperview()
}
}
//pdfView.removeFromSuperview()
}
func screenBounds() -> CGRect {
return UIScreen.main.bounds
}
func getRootController() -> UIViewController {
guard let screen = UIApplication.shared.connectedScenes.first as? UIWindowScene else {
return .init()
}
guard let root = screen.windows.first?.rootViewController else {
return .init()
}
return root
}
func getSafeArea() -> UIEdgeInsets {
guard let screen = UIApplication.shared.connectedScenes.first as? UIWindowScene else {
return .zero
}
guard let safeArea = screen.windows.first?.safeAreaInsets else {
return .zero
}
return safeArea
}
}
