Question

我已将var message:String=""设为global variable，在函数中我计算其值，我必须通过ViewController发送给另一个prepareForSegue，但它结束了发送nil值，知道如何通过segue发送最新值吗？谢谢全球变量： var message2="bob"

准备segue方法：

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
    if (segue.identifier == "submitSegue") {
        let svc = segue.destinationViewController as! Otpscreen;
        svc.otpname = username.text!
        svc.otppass = password.text!
        svc.otp=message2
    }
}

我正在计算值的其他方法：

func findMatch()->Void
{
print(username.text!+password.text!)
let authenticate=username.text!+password.text!
//line where i calculated hash
print(hash)
let num=strtoul(hash,nil,16)
print(num)
let finalhash=String(num)
let soap = SOAPEngine()

soap.responseHeader = true;
soap.setValue(username.text!, forKey: "userName")
soap.setValue(password.text!, forKey: "password")
soap.setValue(finalhash, forKey: "hashKey")
let dict:Dictionary = try! soap.syncRequestURL("someUrl", soapAction: "send method ") as Dictionary
NSLog("%@", dict);
let returnmessage=(dict["Body"]!["sendOTPResponse"]!!["sendOTPReturn"]!!["string"]!![1])
print(returnmessage)
message2=returnmessage as! String


}

Answer 1

代码没有错，但问题是完成块，完成SOAPEngine响应后，segue方法必须在响应后调用。所以使用以下代码

dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(<#delayInSeconds#> * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
    <#code to be executed after a specified delay#>

//通过编程方式调用你的segue }）;

在我计算之前，Segue会发送一个零值吗？

1 个答案: