嗨,我对使用swift编码相当新,所以如果这是Noob问题,请耐心等待。
但是我想在UIalertcontroller检查密码是否正确后尝试让UIalertcontroller实现一个动作(更改图像)。
所以你按下按钮,弹出UIalertcontroller,你输入密码,密码是匹配的,它会改变图像。
是我想要它做的全部!
我遇到的问题是,我已将其编码并且有效,但无论文本字段放入何种文本,它都能正常工作。
我知道这应该是一件相对容易的事情,但是我已经在UIalertcontrollers上阅读过,这只是代码模糊。
class Man_VS_Cocktail : UIViewController{
@IBOutlet weak var Cocktail_Image: UIImageView!
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nil
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
@IBAction func Cocktail_check_button(sender: AnyObject) {
var password_Text: UITextField?
let alertController = UIAlertController(title: "One more ticked off", message: "ask the barman to enter the password", preferredStyle: UIAlertControllerStyle.Alert)
let tickoff_action = UIAlertAction(title: "sign it off", style: UIAlertActionStyle.Default) {
action -> Void in
if let password = password_Text?.text{
print("Password == \(password)")
self.Cocktail_Image.image = UIImage(named: "riddler_question_marks")
} else {
print("No password entered")
}
}
alertController.addTextFieldWithConfigurationHandler { (txtpassword) -> Void in
password_Text = txtpassword
password_Text!.secureTextEntry = true
password_Text!.placeholder = ""
}
alertController.addAction(tickoff_action)
self.presentViewController(alertController, animated: true, completion: nil)
}
}
如果有人能告诉我我做错了什么就是王牌!
答案 0 :(得分:0)
您没有将密码与任何内容进行比较。您需要为视图添加一种方法来访问textField应匹配的密码,然后在此处进行比较:
if let password = password_Text?.text {
print("Password == \(password)")
if password == "YOUR_PASSWORD_HERE" {
self.Cocktail_Image.image = UIImage(named: "riddler_question_marks")
}
}