我试图通过在 Swift 中点击按钮来更改 uiimage 控件包含的图像。为此,我编写了一个简单的“猜我拿起了多少手指”的应用程序。我阅读了一些 StackOverflow 文章,但无法解决问题。您可以在下面看到我的代码和我的用户界面。我如何在单击时更改图像?
这是我的代码:
import UIKit
class ViewController: UIViewController {
@IBOutlet var myImageView: UIImageView!
@IBOutlet var inputField: UITextField!
@IBAction func clickedGuessButtonAction(sender: AnyObject) {
println("Guess button clicked")
var randomX = Int(arc4random()%6)
println("randomX = \(randomX)")
var guess = inputField.text.toInt();
let image0 = UIImage(named: "images/qm.jpg")
let image1 = UIImage(named: "images/tick.jpg")
let image2 = UIImage(named: "images/cross.jpg")
if((inputField.text) != nil){
if(guess == randomX){
println("correct")
myImageView.image=UIImage(named: "tick.jpg") // THIS IS NOT WORKING
myImageView.image=image1 // THIS IS NOT WORKING TOO
inputField.resignFirstResponder();// hides keyboard
}
else
{
println("wrong")
myImageView.image=UIImage(named: "cross.jpg")
inputField.resignFirstResponder();//hides keyboard
}
}
else{
println("invalid input. requires integer only")
inputField.resignFirstResponder();// hides keyboard
}
}
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view, typically from a nib.
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
}
这是我的用户界面: