直接上代码
注意微信拉起支付 需要传 extraHeaders["Referer"] = referer
referer 为微信支付的域名

private var copyBackForwardListsize = 0
private var wxpayIndex = 0
private var isGoBackOrForward = false

binding.bridgeWebView.webViewClient = object : WebViewClient() {

            override fun shouldOverrideUrlLoading(view: WebView?, url: String?): Boolean {
                //H5调起微信app支付方法二（可使用）
                if (url == null) return false

                try {
                    if (url.startsWith("weixin://wap/pay?") || url.startsWith("alipays://platformapi/startApp?")) {
                        val intent = Intent()
                        intent.action = Intent.ACTION_VIEW
                        intent.data = Uri.parse(url)
                        startActivity(intent)
                        return true
                    }
                } catch (e: Exception) {
                    return false
                }

                if (url.contains("https://wx.tenpay.com")) {
                    //h5
                    var referer = ""
                    if (Const.DOCTOR_PACKAGE_NAME == DataManager.getInstance().getPackageName() || Const.PATIENT_PACKAGE_NAME == DataManager.getInstance().getPackageName()) {
                        //正式环境
                        referer = "https://member.manniuhealth.com"
                    } else {
                        //测试环境
                        referer = "https://member-test.manniuhealth.com"
                    }

                    val extraHeaders: MutableMap<String, String> = HashMap()
                    extraHeaders["Referer"] = referer
                    view?.loadUrl(url, extraHeaders)
                    return true
                }

                view?.loadUrl(url)
                return true
            }

            override fun shouldInterceptRequest(view: WebView?, request: WebResourceRequest?): WebResourceResponse? {
                //获取请求url
                var url = request?.url.toString()
                return super.shouldInterceptRequest(view, request)
            }

            override fun onReceivedSslError(view: WebView?, handler: SslErrorHandler?, error: SslError?) {
                handler?.proceed()
            }

            override fun onPageFinished(view: WebView?, url: String?) {
                super.onPageFinished(view, url)

                val urlList = mutableListOf<String>()
                urlList.clear()
                copyBackForwardListsize = view?.copyBackForwardList()?.size ?: 0
                for (i in 0 until copyBackForwardListsize) {
                    view?.copyBackForwardList()?.getItemAtIndex(i)?.url?.let {
                        urlList.add(it)
                    }
                }

                var isWxpay = false
                var isAppointmentResult = false
                urlList.forEachIndexed { index, s ->
                    if (s.contains("https://wx.tenpay.com")) {
                        isWxpay = true
                        wxpayIndex = index
                    }
                    if (s.contains("h5-appointment/appointmentResult")) {
                        isAppointmentResult = true
                    }
                }

                isGoBackOrForward = isWxpay && isAppointmentResult
            }

        }
    }

微信支付成功或失败返回APP 也有坑 会重复拉起微信支付
详看以上onPageFinished 中获得webview历史路由栈
通过返回键处理 返回到微信支付的上一页 通过goBackOrForward方法处理

   fun toFinishActivity() {
        if (binding.bridgeWebView.canGoBack()) {
            if (binding.bridgeWebView.getUrl().equals(webViewUrl)) {
                super.onBackPressed()
            } else {
                if (isGoBackOrForward && binding.bridgeWebView.canGoBackOrForward(-(copyBackForwardListsize - (wxpayIndex - 1)))) {
                    binding.bridgeWebView.goBackOrForward(-(copyBackForwardListsize - (wxpayIndex - 1)))
                } else {
                    binding.bridgeWebView.goBack()
                }
            }
        } else {
            super.onBackPressed()
        }
    }