用于WhatsApp消息页面的Swift iOS -url无法打开或无法打开消息

Question

userA将他们的电话号码上传到我的应用程序，并将其保存到数据库。在他们的个人资料页面上，有一个带whatsapp链接的按钮。

userB按下该按钮，并希望进入用户A的whatsapp页面，以便他们可以通过UIApplication.shared.open(url)或WKWebView向userA发送消息

无论发生什么情况，我都会进入消息页面，但始终会从下面的代码的不同组合中得到这些错误

当我获得此页面时，直到我按下消息按钮才有错误

  

whatsapp：// send？phone = 12345 2019-07-28 09：25：38.200608-0400   myApp [87018：1555440] [ProcessSwapping] 0x1330bd160-   ProvisionalPageProxy :: didFailProvisionalLoadForFrame：pageID = 2   frameID = 1，navigationID = 16 https://www.whatsapp.com/download/   http://itunes.apple.com/us/app/whatsapp-messenger/idXXXXXXX?mt=8   itms-appss：//apps.apple.com/us/app/whatsapp-messenger/idXXXXXXX   2019-07-28 09：25：39.502405-0400 myApp [87018：1555440] [ProcessSwapping]   0x1330bd2c0-ProvisionalPageProxy :: didFailProvisionalLoadForFrame：   pageID = 2，frameID = 1，navigationID = 17

我将此添加到了info.plist

<key>LSApplicationQueriesSchemes</key>
 <array>
    <string>whatsapp</string>
 </array>

我尝试了以下几种不同的组合：

let str = "https://api.whatsapp.com/send?phone=12125551515"

let str = "https://api.whatsapp.com/send?phone=+12125551212"

let str = "whatsapp://send?phone=121255512128&abid=12354&text=Hello"

let str = "whatsapp://send?phone=+121255512128&abid=12354&text=Hello"

let str = "https://api.whatsapp.com/send?phone=12125551212&text=Invitation"

let str = "https://api.whatsapp.com/send?phone=+12125551212&text=Invitation"

let str = "https://wa.me/12125551212"

let str = "https://wa.me/+12125551212"

//  I also tried  CharacterSet.urlQueryAllowed.insert("?&")
guard let urlString = str.addingPercentEncoding(withAllowedCharacters: CharacterSet.urlQueryAllowed) else { return }

guard let url = URL(string: urlString) else { return } // I also tried this without the .addingPercentEncoding...
DispatchQueue.main.async {
    UIApplication.shared.open(url, options: [:], completionHandler: nil)
}

我尝试了这些常见问题解答

https://faq.whatsapp.com/en/android/26000030/

Open Whatsapp on a particular number in swift

Share link using whatsapp

https://help.instapage.com/hc/en-us/articles/360013414531-Integrating-with-WhatsApp

https://faq.whatsapp.com/en/iphone/23559013

how to integrate whatsapp in ios

我也尝试使用WKWebView，但发生相同的问题

let request = URLRequest(url: url)

webView.load(request)

我要去哪里错了？