WKWebView 中的 DeviceMotion 和 DeviceOrientation iOS 13
[英]DeviceMotion and DeviceOrientation in WKWebView iOS 13
问题描述
I want to use DeviceMotion and DeviceOrientation events in WKWebView in iOS 13+.
我想在 iOS 13+ 的WKWebView中使用DeviceMotion和DeviceOrientation事件。 I am using below code我正在使用下面的代码
<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>
This webpage is working both in safari and chrome and asking permission to use device motion as shown below该网页在 safari 和 chrome 中都可以使用，并要求允许使用设备动作，如下所示
Images:图片：
Status will be updated based on I click Allow or Cancel状态将根据我单击允许或取消更新
But in my app inside I am using WKWebView and When I press Ask Permission Button, It is not showing any alert for asking permission and it is directly setting status to Denied .但是在我的应用程序里面我正在使用WKWebView并且当我按下询问权限按钮时，它没有显示任何询问权限的警报，它直接将状态设置为Denied 。 (shown below). （如下所示）。
Please guide me if I am doing something wrong or any extra stuffs required from WKWebView side.如果我做错了什么或WKWebView方面需要任何额外的东西，请指导我。 Here is my iOS WKWebView Code.这是我的 iOS WKWebView代码。 I don't know if changes in WKUserContentController or WKWebViewConfiguration are required.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)!))
2 个解决方案
解决方案1
3 已采纳 2019-12-09 09:05:42
I tried using uiDelegate and it worked我尝试使用uiDelegate并且它有效
Just added one line inside viewDidLoad刚刚在viewDidLoad中添加了一行
webView.uiDelegate = self
Also you will have to confirm type of ViewController to WKUIDelegate .您还必须将ViewController的类型确认为WKUIDelegate 。 That's it而已
解决方案2
0 2020-02-24 08:55:21
On Xamarin iOS (Xamarin.Forms) you can inject the permission request script with the EvaluateJavaScript method on the WkWebView when it is ready:在 Xamarin iOS (Xamarin.Forms) 上，您可以在 WkWebView 准备好后使用EvaluateJavaScript方法注入权限请求脚本：
webView.EvaluateJavaScript("DeviceMotionEvent.requestPermission().then(response => { if (response == 'granted') {window.addEventListener('devicemotion', (e) => {})}}).catch(console.error)");
If using a custom WkWebView renderer the script can be injected when setting the webView control in OnElementChanged (must implement IWKUIDelegate if this bug is still around https://bugs.webkit.org/show_bug.cgi?id=203287 )如果使用自定义 WkWebView 渲染器，则可以在OnElementChanged中设置 webView 控件时注入脚本（如果此错误仍在https://bugs.webkit.org/show_bug.cgi?id=203287 附近，则必须实现 IWKUIDelegate ）
Example: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);
Then you can call yourCustomWebView .EvaluateJavaScript("requestSensorPermission()") in your code behind when WkWebView is ready.然后，当WkWebView准备就绪时，您可以在后面的代码中调用yourCustomWebView .EvaluateJavaScript ("requestSensorPermission()") 。
EvaluateJavaScript: https://docs.microsoft.com/en-us/dotnet/api/webkit.wkwebview.evaluatejavascript?view=xamarin-ios-sdk-12
Custom WkWebView Renderer: https://docs.microsoft.com/en-us/xamarin/xamarin-forms/app-fundamentals/custom-renderer/hybridwebview#create-the-custom-renderer-on-ios
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