在wkwebview中启用摄像头和麦克风访问

是的，看看cordova-plugin-iosrtc和cordova-plugin-wkwebview-
engine。插件背后的想法如下：

1. 创建一个定义各种WebRTC类和函数的Javascript文件（WebRTC.js），并将调用传递给WKWebView，例如：

(function() {  if (!window.navigator) window.navigator = {};  window.navigator.getUserMedia = function() {    webkit.messageHandlers.callbackHandler.postMessage(arguments);  }})();

2. 在WKWebView中，在文档开始处插入脚本：

let contentController = WKUserContentController();contentController.add(self, name: "callbackHandler")let script = try! String(contentsOf: Bundle.main.url(forResource: "WebRTC", withExtension: "js")!, encoding: String.Encoding.utf8)contentController.addUserscript(WKUserscript(source: script, injectionTime: WKUserscriptInjectionTime.atdocumentStart, forMainframeOnly: true))let config = WKWebViewConfiguration()config.userContentController = contentControllerwebView = WKWebView(frame: CGRect.zero, configuration: config)

3. 收听从Javascript发送的消息：

class ViewController: UIViewController, WKUIDelegate, WKNavigationDelegate, WKscriptMessageHandler {  var webView: WKWebView!  func userContentController(_ userContentController: WKUserContentController, didReceive message: WKscriptMessage) {    if message.name == "callbackHandler" {      print(message.body)      // make native calls to the WebRTC framework here    }  }}

4. 如果需要在Javascript领域中执行成功或失败回调，请直接在WKWebView中评估函数调用：

webView.evaluateJavascript("callback({id: (id), status: 'success', args: ...})", completionHandler: nil)

这些回调需要 在 调用 _之前_存储在Javascript中的哈希中

postMessage

commandId

int exec_id = 0;function exec(success, failure, ...) {  // store the callbacks for later  if (typeof success == 'function' || typeof failure == 'function') {    exec_id++;    exec_callbacks[exec_id] = { success: success, failure: failure };    var commandId = exec_id;  }  webkit.messageHandlers.callbackHandler.postMessage({id: commandId, args: ...})}// the native pre calls this directly with the same commandId, so the callbacks can be performed and releasedfunction callback(opts) {  if (opts.status == "success") {    if (typeof exec_callbacks[opts.id].success == 'function') exec_callbacks[opts.id].success(opts.args);  } else {    if (typeof exec_callbacks[opts.id].failure == 'function') exec_callbacks[opts.id].failure(opts.args);  }  // some WebRTC functions invoke the callbacks multiple times  // the native Cordova plugin uses setKeepCallbackAs(true)  if (!opts.keepalive) delete exec_callbacks[opts.id];}

5.
当然，为您的项目添加

NSCameraUsageDescription

NSMicrophoneUsageDescription

Info.plist

请记住，这是一项艰巨的任务，但这是将Javascript，WKWebView和本机框架代码与异步回调桥接在一起的基本思路。