I'm trying to create a simple pdf with CGPDFContextCreateWithURL, but when I show the pdf it's blank. My code:
override func viewDidLoad() {
super.viewDidLoad()
drawSuperPDF("test4.pdf")
showPDFFile()
}
My drawSuperPDF() function
func drawSuperPDF(filename: String) {
let documentsURL = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0]
let pdfFileName = documentsURL.URLByAppendingPathComponent(filename)
let fullPath = pdfFileName.path!
let url = NSURL(fileURLWithPath: fullPath)
var mediaBox:CGRect = CGRectMake(0, 0, 612, 792)
let myPDFContext = CGPDFContextCreateWithURL(url, &mediaBox, nil)
drawHeaders()
CGPDFContextEndPage(myPDFContext)
}
My drawHeaders() and drawHeaderText() functions
func drawHeaders() {
drawHeaderText(CGPoint(x: 30, y: 10), headerText: "Hello World:", underline: true)
drawHeaderText(CGPoint(x: 30, y: 25), headerText: "Hello World:", underline: true)
drawHeaderText(CGPoint(x: 30, y: 40), headerText: "Hello World:", underline: true)
drawHeaderText(CGPoint(x: 30, y: 70), headerText: "Hello World:", underline: true)
}
func drawHeaderText(point: CGPoint, headerText: String, underline: Bool) {
let drawingPoint = CGPoint(x: point.x, y: point.y)
if underline {
var multipleAttributes = [String : NSObject]()
multipleAttributes[NSFontAttributeName] = UIFont.boldSystemFontOfSize(12)
multipleAttributes[NSUnderlineStyleAttributeName] = NSUnderlineStyle.StyleSingle.rawValue
headerText.drawAtPoint(drawingPoint,
withAttributes: multipleAttributes)
} else {
let font = UIFont.systemFontOfSize(12)
headerText.drawAtPoint(drawingPoint,
withAttributes: [NSFontAttributeName : font])}
}
And finally, my showPDFFile()
func showPDFFile() {
let fileName = "test4.pdf"
let documentsURL = NSFileManager.defaultManager().URLsForDirectory(.DocumentDirectory, inDomains: .UserDomainMask)[0]
let pdfFileName = documentsURL.URLByAppendingPathComponent(fileName)
let fullPath = pdfFileName.path!
let webView : UIWebView = UIWebView(frame: CGRectMake(0, 0, self.view.frame.width, self.view.frame.height))
let url : NSURL = NSURL(fileURLWithPath: fullPath)
let request : NSURLRequest = NSURLRequest(URL: url)
webView.scalesPageToFit = true
webView.loadRequest(request)
self.view.addSubview(webView)
}
Before you start drawing on a PDF page, you need to "start" the page by calling CGPDFContextBeginPage. Calls to begin page and end page need to be balanced out by the way.