how to download pdf file in iOS? - swift

Question

I am converting base64 to pdf file in local.
func saveBase64StringToPDF(_ base64String: String)
{
guard
var documentsURL = (FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)).last,
let convertedData = Data(base64Encoded: base64String)
else {
//handle error when getting documents URL
return
}
documentsURL.appendPathComponent("yourFileName.pdf")
do {
try convertedData.write(to: documentsURL)
} catch {
//handle write error here
}
print(documentsURL)
}
From above method I am getting a path pdf file
file:///Users/captivatesoft/Library/Developer/CoreSimulator/Devices/63D1814B-1010-4694-883E-D2EE75C386DD/data/Containers/Data/Application/1F39B567-F470-4B7E-9A9C-4723ADFDC428/Documents/yourFileName.pdf
Is there any way to download this pdf file or to show pdf in safari?

Answer 1

var pdfURL = (FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)).last! as URL
pdfURL = pdfURL.appendingPathComponent( "example.pdf") as URL
let data = try! Data(contentsOf: pdfURL)
let webView = WKWebView(frame: CGRect(x:20,y:20,width:view.frame.size.width-40, height:view.frame.size.height-40))
webView.load(data, mimeType: "application/pdf", characterEncodingName:"", baseURL: pdfURL.deletingLastPathComponent())
view.addSubview(webView)

Answer 2

To open the PDF in Safari you could just do
UIApplication.shared.openURL(URL(string: <the link for the PDF>))
Now to download a PDF or anything from a URL, you could just do
let pdfData = try? Data(contentsOf: URL(string: <the link for the PDF>))
NOTE: try Data(contentsOf: url) will block the thread, so you might want to do it on a different thread like this :
DispatchQueue.global.async { [weak self] in
if let pdfData = try? Data(contentsOf: url) {
// Now you can do anything with the data
}
}

Answer 3

First, you can not download pdf file in iOS, it means you cannot save pdf file in iBook or Album.
You can fetch pdf file data from file URL then you can do follows:
Open in Safari browser from the app.
You can show pdf file in WKWebView within the app.
You can use "QuickLook" framework to show the pdf file.
Using WebView:
if let url = URL(string:string) {
webView.load(URLRequest(url: url))
}