Create and store PDF document programmatically using Swift for iOS

Question

I have an app that can view a PDF that is already stored within the project. I want to be able to create a new PDF document and store it in the app directory to later view

Answer 1

For Swift 3:

createPdf() {
    // 1. Create Print Formatter with input text.

    let formatter = UIMarkupTextPrintFormatter(markupText: textView.text)

    // 2. Add formatter with pageRender

    let render = UIPrintPageRenderer()
    render.addPrintFormatter(formatter, 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 rect = CGRect.zero

    let pdfData = NSMutableData()
    UIGraphicsBeginPDFContextToData(pdfData, rect, 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)/new.pdf", atomically: true)

    print("saved success")
}