iOS :当WKWebView获得一个运动传感器时，会显示一个白色的方块

Question

我正在制作一个VR应用程序，它使用360低地点图像。此应用程序使用HTML显示图像。WKWebView支持获取设备的方向。

webView.uiDelegate = self

显示全向图像是可能的。

不过，在显示内容之前，它会显示白色方框。点击这个方块，电影控制器就会出现。然后点击“X”关闭按钮，这个方块擦拭消失，内容将开始。

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下面是在模拟器上启动此应用程序时的错误消息。

2020-10-05 14:03:00.220288+0900 WebViewButton[70653:4552750] [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}>
2020-10-05 14:03:00.220599+0900 WebViewButton[70653:4552750] [ProcessSuspension] 0x106df57e0 - ProcessAssertion: Failed to acquire RBS MediaPlayback assertion 'WebKit Media Playback' for process with PID 70655, error: 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}
2020-10-05 14:03:00.222371+0900 WebViewButton[70653:4552750] [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}>
2020-10-05 14:03:00.225196+0900 WebViewButton[70653:4552750] [ProcessSuspension] 0x106df5810 - ProcessAssertion: Failed to acquire RBS MediaPlayback assertion 'WebKit Media Playback' for process with PID 70653, error: 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}
2020-10-05 14:03:03.652871+0900 WebViewButton[70653:4552750] <CATransformLayer: 0x600003b09fe0> - changing property masksToBounds in transform-only layer, will have no effect
2020-10-05 14:03:03.653989+0900 WebViewButton[70653:4552750] <CATransformLayer: 0x600003b17200> - changing property masksToBounds in transform-only layer, will have no effect
2020-10-05 14:03:03.658501+0900 WebViewButton[70653:4552750] <CATransformLayer: 0x600003b0a520> - changing property masksToBounds in transform-only layer, will have no effect
2020-10-05 14:03:03.663858+0900 WebViewButton[70653:4552750] [plugin] AddInstanceForFactory: No factory registered for id <CFUUID 0x600003b0a7e0> F8BB1C28-BAE8-11D6-9C31-00039315CD46
2020-10-05 14:03:03.704443+0900 WebViewButton[70653:4552750] <CATransformLayer: 0x600003b07a40> - changing property masksToBounds in transform-only layer, will have no effect
2020-10-05 14:03:03.706753+0900 WebViewButton[70653:4552750] <CATransformLayer: 0x600003b0b340> - changing property masksToBounds in transform-only layer, will have no effect
2020-10-05 14:03:03.727357+0900 WebViewButton[70653:4552750] <CATransformLayer: 0x600003b0a520> - changing property allowsGroupBlending in transform-only layer, will have no effect
2020-10-05 14:03:03.727779+0900 WebViewButton[70653:4552750] <CATransformLayer: 0x600003b07a40> - changing property allowsGroupBlending in transform-only layer, will have no effect

据说没有MediaPlayback资源。

什么？不需要Madiaplayer。

如何删除这个白色方块？如何禁用MediaPlayback？

下面是源代码

import UIKit
import WebKit

class WebViewController: UIViewController, WKNavigationDelegate, WKUIDelegate {
    @IBOutlet weak var webView: WKWebView!
    @IBOutlet weak var backBtn: UIButton!
    
    var rcvURL="" //Contents URL
    override func viewDidLoad() {
        super.viewDidLoad()
        webView.uiDelegate = self // enable to get omni direction sensor
        webView.navigationDelegate = self
        openUrl(urlString: rcvURL)
    }
    
    /** BackButton **/
    @IBAction func back(_ sender: Any) {
        self.dismiss(animated: true, completion: nil)
    }
    /** Open Contents URL **/
    func openUrl(urlString: String) {
       let url = URL(string: urlString)
       let request = NSURLRequest(url: url!)
       webView.load(request as URLRequest)
   }
}

• 这个环境是: Xcode12.0.1 iOS 14.0.1 (iPhoneXR) Swift 5.3

Answer 1

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检查WebView，检查真在内联播放。