Question

我试图找出为什么UIActivityViewController发送了一个稍微转换后的字符串来分享Mail和微信。

这是我的代码：

let activityViewController = UIActivityViewController(activityItems: ["http://preprodgo.travelstart.com/search-on-index?version=3&timestamp=2017-09-15_10-31-27-031"], applicationActivities: nil)

self.present(activityViewController, animated: true, completion: nil)

当Mail共享时，它显示为：

http://preprodgo.travelstart.com/search-on-index?version=3×tamp=2017-09-15_10-31-27-031

系统版本为10.3.3。

Answer 1

×是 HTML4 entity ，如果您将其作为纯文本分享，它会将自身转换为电子邮件中的×符号。

将字符串转换为URL代替：

if let url = URL(string: "http://preprodgo.travelstart.com/search-on-index?version=3&timestamp=2017-09-15_10-31-27-031") {
    let activityViewController = UIActivityViewController(activityItems: [url], applicationActivities: nil)
    present(activityViewController, animated: true)
}

Answer 2

在mail和Wechat分享时给出特殊情况解决：

@objc class TSActivityProvider: NSObject, UIActivityItemSource {
   func activityViewController(_ activityViewController: UIActivityViewController, itemForActivityType activityType: UIActivityType) -> Any? {
       //...
       if activityType == .mail || activityType == .postToWeibo {
            message = message.xmlSimpleEscape()
        }
       return message
   }
}


// https://stackoverflow.com/questions/803676/encode-nsstring-for-xml-html
extension String
{
     func xmlSimpleEscape() -> String
    {
        let mapList : SimpleToFromRepalceList = [
            ("&",  "&amp;"),
            ("\"", "&quot;"),
            ("'",  "&#x27;"),
            (">",  "&gt;"),
            ("<",  "&lt;")]

        return self.simpleReplace(mapList: mapList)
    }
}

有关逃避HTML的工作。我认为Apple应该在UIActivityType中提供建议的解析方法，并在收到字符串时自动转义。

Answer 3

您可以尝试以下

vat urlString = "http://preprodgo.travelstart.com/search-on-index?version=3&timestamp=2017-09-15_10-31-27-031"
urlString = urlString.StringByReplacingOccurencOf(string:"&", with:"&amp")
let activityViewController = UIActivityViewController(activityItems: [urlString], applicationActivities: nil)
self.present(activityViewController, animated: true, completion: nil)

你也可以用HTML名称替换任何url特殊字符。

看起来Apple在UIActivityViewController中错误地转换了字符串

3 个答案: