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How to prevent WKWebView to repeatedly ask for permission to access location?
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| <!DOCTYPE html> | |
| <html> | |
| <body> | |
| <h1>Click the button to get your coordinates.</h1> | |
| <button style="font-size: 60px;" onclick="getUserLocation()">Try It</button> | |
| <p id="demo"></p> | |
| <script> | |
| var x = document.getElementById("demo"); | |
| function getUserLocation() { | |
| if (navigator.geolocation) { | |
| navigator.geolocation.getCurrentPosition(showPosition); | |
| } else { | |
| x.innerHTML = "Geolocation is not supported by this browser."; | |
| } | |
| } | |
| function showPosition(position) { | |
| getLocation(position.coords.latitude,position.coords.longitude); | |
| } | |
| function getLocation(lat,lng) { | |
| x.innerHTML = "Lat: " + lat+ | |
| "<br>Lng: " + lng; | |
| } | |
| </script> | |
| </body> | |
| </html> |
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| import UIKit | |
| import WebKit | |
| import CoreLocation | |
| class ViewController: UIViewController , CLLocationManagerDelegate, WKScriptMessageHandler{ | |
| var webView: WKWebView? | |
| var manager: CLLocationManager! | |
| override func viewDidLoad() { | |
| super.viewDidLoad() | |
| manager = CLLocationManager() | |
| manager.delegate = self | |
| manager.desiredAccuracy = kCLLocationAccuracyBest | |
| manager.requestAlwaysAuthorization() | |
| manager.startUpdatingLocation() | |
| let contentController = WKUserContentController() | |
| contentController.add(self, name: "locationHandler") | |
| let config = WKWebViewConfiguration() | |
| config.userContentController = contentController | |
| let scriptSource = "navigator.geolocation.getCurrentPosition = function(success, error, options) {window.webkit.messageHandlers.locationHandler.postMessage('getCurrentPosition');};" | |
| let script = WKUserScript(source: scriptSource, injectionTime: .atDocumentEnd, forMainFrameOnly: true) | |
| contentController.addUserScript(script) | |
| self.webView = WKWebView(frame: self.view.bounds, configuration: config) | |
| view.addSubview(webView!) | |
| webView?.uiDelegate = self | |
| webView?.navigationDelegate = self | |
| webView?.scrollView.delegate = self | |
| webView?.scrollView.bounces = false | |
| webView?.scrollView.bouncesZoom = false | |
| let url = Bundle.main.url(forResource: "index", withExtension:"html") | |
| let request = URLRequest(url: url!) | |
| webView?.load(request) | |
| } | |
| func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) { | |
| if message.name == "locationHandler",let messageBody = message.body as? String { | |
| if messageBody == "getCurrentPosition"{ | |
| let script = | |
| "getLocation(\(manager.location?.coordinate.latitude ?? 0) ,\(manager.location?.coordinate.longitude ?? 0))" | |
| webView?.evaluateJavaScript(script) | |
| } | |
| } | |
| } | |
| } |
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