我想在点击它时更改UIButton图像

Question

我在CollectionViewController的标题中有2个按钮。 当我点击其中一个时，我正在使用UIControlState - > .normal .selected更改此按钮的图像。

override func viewDidLoad() {
    super.viewDidLoad()
    collectionView.delegate = self
    collectionView.dataSource = self

    engSwitchButton.setImage(#imageLiteral(resourceName: "abc"), for: .normal)
    geoSwitchButton.setImage(#imageLiteral(resourceName: "abg"), for: .normal)
    engSwitchButton.setImage(#imageLiteral(resourceName: "abc2"),for: UIControlState.selected)
    geoSwitchButton.setImage(#imageLiteral(resourceName: "abg2"), for: UIControlState.selected)


    engSwitchButton.tag = Language.english.rawInt
    geoSwitchButton.tag = Language.georgian.rawInt
}



@IBAction func languageSwitchTapped(_ sender: UIButton) {

    sender.isSelected = !sender.isSelected



    selectedLanguage = Language(rawInt: sender.tag)!
    collectionView.reloadData()
}

我想要首先点击的按钮，当我通过点击它改变2d按钮的状态时，回到.normal状态。

Answer 1

要在点击时更改按钮图像，您应该使用UIControlState.highlighted 。

所以改变：

engSwitchButton.setImage(#imageLiteral(resourceName: "abc2"),for: UIControlState.selected)
    geoSwitchButton.setImage(#imageLiteral(resourceName: "abg2"), for: UIControlState.selected)

对此：

engSwitchButton.setImage(#imageLiteral(resourceName: "abc2"),for: UIControlState.highlighted)
    geoSwitchButton.setImage(#imageLiteral(resourceName: "abg2"), for: UIControlState.highlighted)

Answer 2

@IBAction func yourFirstButton(_ sender: Any) {
    firstButton.setImage(UIImage(named: "yourButtonPressedImage")!, for: .normal)
    secondbutton.setImage(UIImage(named: "yourNormalImage")!, for: .normal)


}

在你的第二个按钮@IBAction方法只需切换按钮的图像

 @IBAction func yourSecondButton(_ sender: Any) {
     secondButton.setImage(UIImage(named: "yourButtonPressedImage")!, for: .normal)
     firsBbutton.setImage(UIImage(named: "yourNormalImage")!, for: .normal)


 }