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我正在使用其他API登录我只是使用用户的电子邮件和密码发送请求。如果它们在数据库中匹配,那么我返回一些Json并快速解析它。这部分工作正常,我现在想要做的是弄清楚如何提醒用户电子邮件和密码不匹配。到目前为止,我得到这个IOS Swift如何更快地返回标签响应
@IBAction func Login_Action(_ sender: Any) {
var check = 0
let url:URL = URL(string:ConnectionString+"login")!
let Email = email.text!
let Password = password.text!
let session = URLSession.shared
var request = URLRequest(url: url)
request.httpMethod = "POST"
request.cachePolicy = NSURLRequest.CachePolicy.reloadIgnoringCacheData
let parameter = "email=\(Email)&password=\(Password)"
request.httpBody = parameter.data(using: String.Encoding.utf8)
session.dataTask(with:request, completionHandler: {(data, response, error) in
if error != nil {
// print(error)
} else {
do {
// if the call is successful then it goes through here otherwise it skips it
check = 1
let parsedData = try JSONSerialization.jsonObject(with: data!, options: .allowFragments) as? [String:Any]
}
DispatchQueue.main.async {
// send them to member page
let next = self.storyboard?.instantiateViewController(withIdentifier: "NextView")
self.present(next, animated: true, completion: nil)
}
}
} catch let error as NSError {
print(error)
if check == 0 {
self.error.isHidden = false
self.error.text = "Incorrect email and/or password"
}
}
}
// If the call is unsuccessful then show message
return
}).resume()
/*
print(check)
if check == 0 {
self.error.isHidden = false
self.error.text = "Incorrect email and/or password"
print("incorrect")
}*/
}
我使用检查变量作为标志它的默认值是0。这意味着电子邮件/密码组合不起作用,如果电子邮件/密码组合工作,然后我将它设置为1。问题是,如果用户提供了错误的凭证,则需要大约5或7秒才能显示错误的电子邮件和/或密码消息。当我查看通话响应时间时,它会立即返回,但标签显示需要7秒钟。如果我把该.resume外相同的逻辑则出现瞬间不过消息始终是不正确的电子邮件和密码,检查是否为0或1的任何建议将是更好的
嘿罗马,请改善您的代码格式 - 很难阅读它,谢谢!另外:请记住,'guard'是你的朋友:-) –
你需要在关闭窗口*中显示关于不正确的登录详细信息的信息,就像你对下一个场景的演示一样。记得在主队列上发送UI更新 – Paulw11
谢谢你会做Paulo和哦OK Paulw现在会这样做 –