单击按钮时打开PDF文档 [英] Opening a PDF document when clicking a button
问题描述
我正试图为我的家庭餐馆快速创建一个应用程序.我目前有一个单击的按钮,它也使您进入菜单的webviewer页面.我想在应用程序中使用菜单,因此它不会重定向到Safari.
I am trying to create an app for my family restaurant in swift. I currently have a button that you click on that takes you too a webviewer page of our menu. I want to make the menu with in the app so it does not redirect to safari.
基本上我想做的是单击一个按钮,它会在应用程序中打开pdf菜单,而不是使用safari.
Basically what I want to do is click a button and it opens the menu pdf within the app instead safari.
我使用的代码也在浏览器中打开PDF:
The code that I use too open the PDF in a browser:
@IBAction func menu(sender: AnyObject) {
if let url = NSURL(string:"http://nebula.wsimg.com/db5e994c02db104ea89bdf6e59550490?AccessKeyId=895454CA4A1E296ED3E3&disposition=0&alloworigin=1") {
UIApplication.sharedApplication().openURL(url)
}
推荐答案
您可以使用QLPreviewController预览pdf,但是它必须是本地资源,或者需要从Web上下载才能进行预览:
You can use QLPreviewController to preview your pdf but it needs to be a local resource or downloaded from the web prior to previewing:
迅速3或更高版本
import UIKit
import QuickLook
class ViewController: UIViewController, QLPreviewControllerDataSource {
let preview = QLPreviewController()
func numberOfPreviewItems(in controller: QLPreviewController) -> Int {
return 1
}
func previewController(_ controller: QLPreviewController, previewItemAt index: Int) -> QLPreviewItem {
return Bundle.main.url(forResource: "menu", withExtension: "pdf")!
as QLPreviewItem
}
override func viewDidLoad() {
super.viewDidLoad()
// set preview data source
preview.dataSource = self
// set current item index (only one = 0)
preview.currentPreviewItemIndex = 0
}
@IBAction func showMenu(sender: UIButton) {
present(preview, animated: true) {
// code
}
}
}
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