[英]WKWebView Request permission for DeviceMotion and DeviceOrientation is called every time app launches
[英]DeviceMotion and DeviceOrientation in WKWebView iOS 13
我想在 iOS 13+ 的WKWebView
中使用DeviceMotion
和DeviceOrientation
事件。 我正在使用下面的代碼
<html>
<style>
#container{
margin: 20px;
padding: 20px
}
#deviceType{
text-align: center;
font-family: Arial, Helvetica, sans-serif;
font-size: 3rem;
font-weight: bold;
color: #08f
}
#permission{
padding: 2rem 5rem;
background: #08f;
color: white;
margin-top: 30;
font-family: Arial, Helvetica, sans-serif;
font-size: 3rem;
border: none;
border-radius: 1rem
}
#permissionStatus{
text-align: center;
font-family: Arial, Helvetica, sans-serif;
font-size: 2.5rem;
font-weight: 600;
color: red;
margin-top: 30px
}
</style>
<body>
<div id="container">
<div id="deviceType"></div>
<div style="text-align: center">
<button id="permission">Ask for permission</button>
</div>
<div id="permissionStatus">Pending</div>
</div>
</body>
<script>
if (typeof DeviceMotionEvent.requestPermission === 'function') {
document.getElementById('deviceType').innerText = 'iOS 13'
document.getElementById('permission').addEventListener('click', function () {
console.log('button clicked')
DeviceMotionEvent.requestPermission().then(response => {
// This is showing "denied" without showing any permission popup
console.log(response)
document.getElementById('permissionStatus').innerText = response
}).catch(console.error)
});
} else {
// ignore this case for processing
console.log('non iOS 13')
document.getElementById('deviceType').innerText = 'non iOS 13'
}
</script>
</html>
該網頁在 safari 和 chrome 中都可以使用,並要求允許使用設備動作,如下所示
圖片:
狀態將根據我單擊允許或取消更新
但是在我的應用程序里面我正在使用WKWebView
並且當我按下詢問權限按鈕時,它沒有顯示任何詢問權限的警報,它直接將狀態設置為Denied 。 (如下所示)。
如果我做錯了什么或WKWebView
方面需要任何額外的東西,請指導我。 這是我的 iOS WKWebView
代碼。 我不知道是否需要更改WKUserContentController
或WKWebViewConfiguration
。
self.webView = WKWebView(frame: .zero)
self.webView.translatesAutoresizingMaskIntoConstraints = false
// Add the webview as a subview of MTKView
self.view.addSubview(self.webView)
self.webView.leadingAnchor.constraint(equalTo: self.view.leadingAnchor).isActive = true
self.webView.topAnchor.constraint(equalTo: self.view.topAnchor).isActive = true
self.webView.trailingAnchor.constraint(equalTo: self.view.trailingAnchor).isActive = true
self.webView.bottomAnchor.constraint(equalTo: self.view.bottomAnchor).isActive = true
let websiteDataTypes = NSSet(array: [WKWebsiteDataTypeDiskCache, WKWebsiteDataTypeMemoryCache])
let date = Date(timeIntervalSince1970: 0)
WKWebsiteDataStore.default().removeData(ofTypes: websiteDataTypes as! Set<String>, modifiedSince: date, completionHandler:{ })
self?.webView.load(URLRequest(url: URL(string: url)!))
我嘗試使用uiDelegate
並且它有效
剛剛在viewDidLoad
中添加了一行
webView.uiDelegate = self
您還必須將ViewController
的類型確認為WKUIDelegate
。 而已
在 Xamarin iOS (Xamarin.Forms) 上,您可以在 WkWebView 准備好后使用EvaluateJavaScript
方法注入權限請求腳本:
webView.EvaluateJavaScript("DeviceMotionEvent.requestPermission().then(response => { if (response == 'granted') {window.addEventListener('devicemotion', (e) => {})}}).catch(console.error)");
如果使用自定義 WkWebView 渲染器,則可以在OnElementChanged
中設置 webView 控件時注入腳本(如果此錯誤仍在https://bugs.webkit.org/show_bug.cgi?id=203287 附近,則必須實現 IWKUIDelegate )
例子:
// do this when setting up the webview control in OnElementChanged
//enable device motion sensors permission script:
//https://medium.com/flawless-app-stories/how-to-request-device-motion-and-orientation-permission-in-ios-13-74fc9d6cd140
var source =
"function requestSensorPermission() {" +
" if (typeof(DeviceMotionEvent) !== 'undefined' && typeof(DeviceMotionEvent.requestPermission) === 'function') {" +
" DeviceMotionEvent.requestPermission() .then(response => {" +
" if (response == 'granted') { " +
" window.addEventListener('devicemotion', (e) => { })" +
" }" +
" }).catch(console.error)" +
" }" +
"}";
var script = new WKUserScript(new NSString(source), WKUserScriptInjectionTime.AtDocumentEnd, true);
wkWebView.Configuration.UserContentController.AddUserScript(script);
然后,當WkWebView
准備就緒時,您可以在后面的代碼中調用yourCustomWebView .EvaluateJavaScript ("requestSensorPermission()") 。
自定義 WkWebView 渲染器: https://docs.microsoft.com/en-us/xamarin/xamarin-forms/app-fundamentals/custom-renderer/hybridwebview#create-the-custom-renderer-on-ios
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