如何使用 WKScriptMessageHandler 读取发送到父元素的邮件？

Question

我正在 WKWebView 中加载 URL，它正在向父元素发送邮寄消息：

window.parent.test.postMessage('A message')

我正在实施 WKScriptMessageHandler 并尝试使用 userController(didReceiveMessage):

获取该消息

func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
    if(message.name == "test") {
        print("JavaScript is sending a message \(message.body)")

    }
}

message.body有点像

{
   command = "015.1";
}

我想将这个值015.1读入一个字符串变量

Answer 1

首先应该将消息作为字典传递

window.parent.test.postMessage({"command":id})

func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
        print("chegou mensagem do javascript ")
        print(message.body)
        print(message.name)
        let dict = message.body as? NSDictionary;
        let str = dict?["command"] as? String
        print(str ?? "")

如何使用 WKScriptMessageHandler 读取发送到父元素的邮件？

How to read a postmessage sent to a parent element using WKScriptMessageHandler?

javascript

swift

wkwebview