当按下“输入”按钮时,我需要从警报视图中的文本字段中获取文本。
func inputMsg() {
var points = ""
var outOf = ""
var alertController = UIAlertController(title: "Input View", message: "Please Input Your Grade", preferredStyle: UIAlertControllerStyle.Alert)
let actionCancle = UIAlertAction(title: "Cancle", style: UIAlertActionStyle.Cancel) { ACTION in
println("Cacle")
}
let actionInput = UIAlertAction(title: "Input", style: UIAlertActionStyle.Default) { ACTION in
println("Input")
println(points)
println(outOf)
}
alertController.addAction(actionCancle)
alertController.addAction(actionInput)
alertController.addTextFieldWithConfigurationHandler({(txtField: UITextField!) in
txtField.placeholder = "I got"
txtField.keyboardType = UIKeyboardType.NumberPad
points = txtField.text
})
alertController.addTextFieldWithConfigurationHandler({(txtField: UITextField!) in
txtField.placeholder = "Out Of"
txtField.keyboardType = UIKeyboardType.NumberPad
outOf = txtField.text
})
presentViewController(alertController, animated: true, completion: nil)
}
As 要求的这是一个实施解决方案。
alertController.addAction(UIAlertAction(title: "Submit", style: UIAlertActionStyle.Default,handler: {
(alert: UIAlertAction!) in
if let textField = alertController.textFields?.first as? UITextField{
println(textField.text)
}
}))
如上所述,alertController 有一个名为textFields
。如果您添加了文本字段,则可以有条件地解包该属性以安全地访问文本字段。在这种情况下,由于只有一个文本字段,我只是使用first
财产。希望能帮助到你。
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