![](/img/trans.png)
[英]Removing a single specific user script from WKUserContentController
[英]Can't get string data from WKUserContentController didReceive WKScriptMessage
我的方法稱為:
func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
print("message.body: \(message.body)")
if let messageBody = message.body as? [String: Any] {
print("messageBody: \(messageBody)") //this is not triggered
if let data = messageBody["data"] as? NSString {
print("DATA: \(data)")
}
}
消息正文是:
message.body: {"type":3,"data":"{\"title\":\"Verzamelen\",\"content\":\"Loongegevens...\"}"}
但在那之后我無法檢索“數據”字段。 我錯過了什么?
該問題可能與字符串中的反斜杠轉義有關。 有效的是使用 JSON 解碼器對其進行解碼:
struct ScriptMessage: Codable {
let type: Int
let data: String
}
func userContentController(_ userContentController: WKUserContentController, didReceive message: WKScriptMessage) {
guard let bodyString = message.body as? String,
let bodyData = bodyString.data(using: .utf8) else {
return
}
if let bodyStruct = try? JSONDecoder().decode(ScriptMessage.self, from: bodyData) {
print(bodyStruct.data)
}
}
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.