Android Webview权限申请onPermissionR

H5与原生App交互，需要调用相机或者麦克风时，需要手机端处理权限申请逻辑，在webView的WebChromeClient中处理回调：

  webView.webChromeClient = object : WebChromeClient() {

            override fun onPermissionRequest(request: PermissionRequest?) {
                val resources = request?.resources ?: return
                val permissions = mutableListOf<String>()
                resources.forEach { permission ->
                    if (permission == PermissionRequest.RESOURCE_VIDEO_CAPTURE) {
                        permissions.add(Manifest.permission.CAMERA)
                    } else if (permission == PermissionRequest.RESOURCE_AUDIO_CAPTURE) {
                        permissions.add(Manifest.permission.RECORD_AUDIO)
                        permissions.add(Manifest.permission.MODIFY_AUDIO_SETTINGS)   //注意，一定要申请这个权限，同时在manifest里声明
                    }
                }
                if (permissions.isEmpty()) return
                //此处处理权限申请，替换成自己的方法
                PermissionX.init(this@WebViewActivity).permissions(permissions).request { allGranted, grantedList, deniedList ->
                    if (allGranted) {
                        //权限申请通过，告诉H5
                        request.grant(resources)
                    } else {
                        //权限被拒绝
                        request.deny()
                    }
                }
            }
  }