下面我的 swift 代码在 uiview Controller 上放置了 2 个不同的 ImageView 。当用户点击图像时,我希望特定的 ImageView 改变颜色。我不知道如何将该方法应用于多个 ImageView 。我认为你会使用发送者方法。
import UIKit
class ViewController: UIViewController {
var slider = UISlider()
var image1 = UIImageView()
var image2 = UIImageView()
var with = 80
override func viewDidLoad() {
super.viewDidLoad()
// Do any additional setup after loading the view.
[slider,image1,image2].forEach{
$0.translatesAutoresizingMaskIntoConstraints = false
view.addSubview($0)
$0.backgroundColor = .systemOrange
}
slider.frame = CGRect(x: view.center.x-115, y: view.center.y+200, width: CGFloat(with), height: 30)
image1.frame = CGRect(x: view.center.x-115, y: view.center.y, width: CGFloat(with), height: 30)
image2.frame = CGRect(x: view.center.x-115, y: view.center.y-200, width: CGFloat(with), height: 30)
slider.minimumValue = 10
slider.maximumValue = 150
image1.isUserInteractionEnabled = true
let gestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(imageViewTapped))
image1.addGestureRecognizer(gestureRecognizer)
image2.addGestureRecognizer(gestureRecognizer)
}
@objc func imageViewTapped(sender: UITapGestureRecognizer) {
if let imageView = sender.view as? UIImageView {
imageView.backgroundColor = .yellow
}
}
}
最佳答案
我尝试了你的代码:
添加以下两行以启用@matt提到的用户交互:
image1.isUserInteractionEnabled = true
image2.isUserInteractionEnabled = true
并为手势创建两个单独的对象:
let gestureRecognizer1 = UITapGestureRecognizer(target: self, action: #selector(imageViewTapped))
image1.addGestureRecognizer(gestureRecognizer1)
let gestureRecognizer2 = UITapGestureRecognizer(target: self, action: #selector(imageViewTapped))
image2.addGestureRecognizer(gestureRecognizer2)
祝你编码愉快...
关于swift - 在多个 ImageView 上使用点击手势识别器,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/59349483/