在Swift中显示/隐藏图像

Question

如何通过点击按钮在Swift中显示或隐藏图像？ 例如：

我有ImageA和ImageB以及一个我想用来将ImageA移动到ImageB并返回ImageA的按钮等等。

从ImageA转移到ImageB是完美的，但我怎样才能回到ImageA？

我的代码是：

import UIKit

class ViewController: UIViewController {

@IBOutlet weak var Bild1: UIImageView!
@IBOutlet weak var Bild2: UIImageView!

@IBAction func pressedButton(sender: AnyObject) {

    Bild1.hidden = true
    Bild2.hidden = false
}


override func viewDidLoad() {
    super.viewDidLoad()

    Bild1.hidden = false
    Bild2.hidden = true

    // 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.
}


}

Answer 1

@IBAction func pressedButton(sender: AnyObject) 
{
    if Bild2.tag == 0
    {
        Bild1.hidden = true
        Bild2.hidden = false
        Bild2.tag=1
    }
    else 
    {
        Bild1.hidden = false
        Bild2.hidden = true
        Bild2.tag=0
    }
}


override func viewDidLoad()
{
    super.viewDidLoad()

    Bild1.hidden = false
    Bild2.hidden = true
    Bild2.tag=0
// Do any additional setup after loading the view, typically from a nib.
}

Answer 2

@IBAction func pressedButton(sender: AnyObject) {

    Bild1.isHidden = !Bild1.isHidden
    Bild2.isHidden = !Bild2.isHidden
}

这将切换show和hidden之间的image属性。 语法是兼容Swift4的

Answer 3

尝试替换为：

@IBAction func pressedButton(sender: AnyObject) {
    if Bild1.hidden {
        Bild1.hidden = false
        Bild2.hidden = true
    } else {
        Bild1.hidden = true
        Bild2.hidden = false
    } 
}

Answer 4

@IBAction func pressedButton(sender: AnyObject) {

    Bild1.hidden = !Bild1.hidden
    Bild2.hidden = !Bild2.hidden
}