How to display pdf on iOS

Question

I want to know if there is any way for a offline build for xcode iOS such that we can display pdf file from local file.

The method I\'m using now is vi

Answer 1

I advise you using the QuickLook framework while handling PDF files.

Answer 2

NSString *path = [[NSBundle mainBundle] pathForResource:@"Yourpdf" ofType:@"pdf"];
NSURL *targetURL = [NSURL fileURLWithPath:path];
NSURLRequest *request = [NSURLRequest requestWithURL:targetURL];
UIWebView *webView=[[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 300, 400)];
[[webView scrollView] setContentOffset:CGPointMake(0,500) animated:YES];
[webView stringByEvaluatingJavaScriptFromString:[NSString stringWithFormat:@"window.scrollTo(0.0, 50.0)"]];
[webView loadRequest:request];
[self.view addSubview:webView];

Answer 3

SWIFT 4.x

UIWebview approach in swift:

    //let url = URL.init(string: "https://www.adobe.com/content/dam/acom/en/devnet/acrobat/pdfs/pdf_open_parameters.pdf")! // for file in web
    let url = Bundle.main.url(forResource: "filename", withExtension: ".pdf")! // for file in bundle
    let webView = UIWebView.init(frame: view.frame)
    webView.autoresizingMask = [.flexibleHeight, .flexibleWidth]
    webView.loadRequest(URLRequest.init(url: url))
    view.addSubview(webView)

Answer 4

There is a new toolkit IOs has introduced. It has many dedicated features related to displaying PDFs. You can use PdfView class in it to display a PDF either from a local file or via a URL.

PDFKit > PDFView

Answer 5

You can also use UIDocumentInteractionController !

let docController = UIDocumentInteractionController(url: URL(fileURLWithPath: path)) documentInteractionController.presentPreview(animated: true)

Answer 6

we are iOS coders, no JS/Web programmer, so stay in swift and Apple APIs. The faster, cleaner, way is to use Quicklook.

I quote calimarkus.

Anyway code is very simple:

//  Copyright © 2019 ing.conti. All rights reserved.
//

import UIKit
import QuickLook


class ViewController: UIViewController, QLPreviewControllerDataSource {

    var previewController:QLPreviewController?

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        self.previewController = QLPreviewController()
        previewController!.dataSource = self
        present(previewController!, animated: true)

    }

    //QL delegate:

    func numberOfPreviewItems(in controller: QLPreviewController) -> Int {
        return 1
    }


    func previewController(_ controller: QLPreviewController, previewItemAt index: Int) -> QLPreviewItem {

        guard let url = Bundle.main.url(forResource: "SAMPLE", withExtension: "pdf") else {
            fatalError("Could not load pdf")
        }

        return url as QLPreviewItem 
    }
}