An error is reported when playing h5 audio or video elements in wkwebview: Error acquiring assertion: Error Domain=RBSAssertionErrorDomain Code=3 "Required client entitlement is missing" UserInfo={RBSAssertionAttribute=RBSDomainAttribute| domain:"com.apple.webkit" name:"MediaPlayback" sourceEnvironment:"(null)", NSLocalizedFailureReason=Required client entitlement is missing} Then the performance of the webview will become very poor.
There is an audio element and a button button in my HTML file. Click the button to play audio.
body
button onclick="handleClick()"PLAY/button
audio id="audio" src="https://ac-dev.oss-cn-hangzhou.aliyuncs.com/test-2022-music.mp3"/audio
script
function handleClick() {
document.getElementById("audio").play();
}
/script
/body
Create a wkwebview to load the html file in my demo APP.
class ViewController: UIViewController , WKUIDelegate{
var webView: WKWebView!
override func loadView() {
let config = WKWebViewConfiguration()
config.preferences.javaScriptEnabled = true
config.allowsInlineMediaPlayback = true
webView = WKWebView(frame: .zero, configuration: config) //.zero
webView.uiDelegate = self
view = webView
}
override func viewDidLoad() {
super.viewDidLoad()
let myURL = URL(string: "https://ac-dev.oss-cn-hangzhou.aliyuncs.com/test-2022-py.html")
let myRequest = URLRequest(url: myURL!)
webView.load(myRequest)
}
}
Click the button in the HTML to play the audio, and you can see the error report on the xcode.
iPadN[2133:855729] [assertion] Error acquiring assertion: Error Domain=RBSAssertionErrorDomain Code=3 "Required client entitlement is missing" UserInfo={RBSAssertionAttribute=RBSDomainAttribute| domain:"com.apple.webkit" name:"MediaPlayback" sourceEnvironment:"(null)", NSLocalizedFailureReason=Required client entitlement is missing}
To sum up, this error will appear when playing audio or video in HTML. Then the app performance will drop a lot, and the interactive response will be very slow.