How to Load Local PDF in Uiwebview in Swift

How to Load Local PDF in UIWebView in Swift

Here you go:

if let pdf = NSBundle.mainBundle().URLForResource("myPDF", withExtension: "pdf", subdirectory: nil, localization: nil)  {
            let req = NSURLRequest(URL: pdf)
            let webView = UIWebView(frame: CGRectMake(20,20,self.view.frame.size.width-40,self.view.frame.size.height-40))
            webView.loadRequest(req)
            self.view.addSubview(webView)
        }

Edit

The alternative is via NSData:

if let pdfURL = NSBundle.mainBundle().URLForResource("myPDF", withExtension: "pdf", subdirectory: nil, localization: nil),data = NSData(contentsOfURL: pdfURL), baseURL = pdfURL.URLByDeletingLastPathComponent  {
    let webView = UIWebView(frame: CGRectMake(20,20,self.view.frame.size.width-40,self.view.frame.size.height-40))
    webView.loadData(data, MIMEType: "application/pdf", textEncodingName:"", baseURL: baseURL)
    self.view.addSubview(webView)
}

Apple make a point of advising you to not use .loadRequest for local HTML files, while not clearly extending this to other data types. So I've provided the NSData route above. If you wish to specify a textEncodingName it can be "utf-8", "utf-16", etc.

Edit: Swift 3

Here's a Swift 3 version of the code using, as Apple advise, WKWebView in place of UIWebView.

import UIKit
import WebKit

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

        if let pdfURL = Bundle.main.url(forResource: "myPDF", withExtension: "pdf", subdirectory: nil, localization: nil)  {
            do {
                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)

            }
            catch {
                // catch errors here
            }

        }
    }

}

Accessing the PDF from Asset.xcassets (Swift 4)

if let asset = NSDataAsset(name: "myPDF") {
            let url = Bundle.main.bundleURL
            let webView = WKWebView(frame: CGRect(x:20,y:20,width:view.frame.size.width-40, height:view.frame.size.height-40))
            webView.load(asset.data, mimeType: "application/pdf", characterEncodingName:"", baseURL:url)
            view.addSubview(webView)
       }

Open PDF file using swift

If you simply want to view a PDF file you can load it into a UIWebView.

let url : NSURL! = NSURL(string: "http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UIWebView_Class/UIWebView_Class.pdf")
webView.loadRequest(NSURLRequest(URL: url))

Swift 4.1 :

let url: URL! = URL(string: "http://developer.apple.com/iphone/library/documentation/UIKit/Reference/UIWebView_Class/UIWebView_Class.pdf")
webView.loadRequest(URLRequest(url: url))

If you'd like to achieve more, a good framework is PSPDFKit.

Can we open pdf file using UIWebView on iOS?

Yes, this can be done with the UIWebView.

If you are trying to display a PDF file residing on a server somewhere, you can simply load it in your web view directly:

Objective-C

UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(10, 10, 200, 200)];

NSURL *targetURL = [NSURL URLWithString:@"https://www.example.com/document.pdf"];
NSURLRequest *request = [NSURLRequest requestWithURL:targetURL];
[webView loadRequest:request];

[self.view addSubview:webView];

Swift

let webView = UIWebView(frame: CGRect(x: 10, y: 10, width: 200, height: 200))

let targetURL = NSURL(string: "https://www.example.com/document.pdf")! // This value is force-unwrapped for the sake of a compact example, do not do this in your code
let request = NSURLRequest(URL: targetURL)
webView.loadRequest(request)

view.addSubview(webView)

Or if you have a PDF file bundled with your application (in this example named "document.pdf"):

Objective-C

UIWebView *webView = [[UIWebView alloc] initWithFrame:CGRectMake(10, 10, 200, 200)];

NSURL *targetURL = [[NSBundle mainBundle] URLForResource:@"document" withExtension:@"pdf"];
NSURLRequest *request = [NSURLRequest requestWithURL:targetURL];
[webView loadRequest:request];

[self.view addSubview:webView];

Swift

let webView = UIWebView(frame: CGRect(x: 10, y: 10, width: 200, height: 200))

let targetURL = NSBundle.mainBundle().URLForResource("document", withExtension: "pdf")! // This value is force-unwrapped for the sake of a compact example, do not do this in your code
let request = NSURLRequest(URL: targetURL)
webView.loadRequest(request)

view.addSubview(webView)

You can find more information here: Technical QA1630: Using UIWebView to display select document types.

How to display PDF files from remote location on UIWebView using Swift?

If the file is not in your app you should not use NSBundle.

let pdfUrl = NSURL(string: website)
let req = NSURLRequest(URL: pdfUrl)

I'm also not sure why you are adding the webView subview to the view. Shouldn't that be done somewhere else? Shouldn't you push a controller with the webview instead?

How to load the html file with pdf on iOS WKWebView

Let me answer my own question.

I have used WKWebViewLocal library for creating a localhost server.
Now, this will create access the local files via host name. Using this approach apps' memory utilization has been optimized a lot (Only because of WKWebView).

NSString *filePath = [[NSBundle mainBundle] pathForResource:@"swift_tutorial" ofType:@"pdf"];    
NSString *htmlPath = [[NSBundle mainBundle] pathForResource:@"viewer" ofType:@"html" inDirectory:@"PDFJS/web"];
NSString *finalPath = [NSString stringWithFormat:@"http://localhost:8080%@?file=%@#page=1",htmlPath, filePath];
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:finalPath]];
[self.webView loadRequest:request];

now, the finalpath will be

http://localhost:8080/~~~~~~~/PDFJS/web/viewer.html?file=/Users/~~~~~~/swift_tutorial.pdf#page=1

IOS: How to load local files in UIWebview eg: .png, .doc, .pdf, etc

To load file from your bundle:

  NSString * html = [[NSString alloc] initWithFormat:@"<img src=\"file://%@\"/>", filename];

 [self.webView loadHTMLString:newhtml  baseURL:[NSURL fileURLWithPath:[[NSBundle mainBundle] resourcePath]]];

To load from your document directory:

NSArray *paths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory, NSUserDomainMask ,YES );
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *path = [documentsDirectory stringByAppendingPathComponent:@"index.pdf"];
[webView loadRequest:[NSURLRequest requestWithURL:[NSURL fileURLWithPath:path]]]

---

Related Topics