I have a ScrollView
with an ImageView
inside. Here a user can select a point on the image and it will print out the coordinates.
我有一个带有ImageView的ScrollView。在这里,用户可以选择图像上的一个点,它将打印出坐标。
I'm also trying to add an image ("pin") to the tapped coordinate but am unsure how to...
我也试图将图像(“pin”)添加到tapped坐标但不确定如何...
// MARK: - Outlets
@IBOutlet weak var containerView: UIView!
@IBOutlet weak var scrollView: UIScrollView!
@IBOutlet weak var sharkImage: UIImageView!
// MARK: - View Did Load
override func viewDidLoad() {
super.viewDidLoad()
scrollView.minimumZoomScale = 1.0
scrollView.maximumZoomScale = 6.0
scrollView.delegate = self
let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(tapAction))
self.sharkImage.isUserInteractionEnabled = true
self.sharkImage.addGestureRecognizer(tapGestureRecognizer)
}
// MARK: - Scroll View
func viewForZooming(in scrollView: UIScrollView) -> UIView? {
return sharkImage
}
// MARK: - Functions
func tapAction(sender: UITapGestureRecognizer) {
// Get points for the UIImageView
let touchPoint = sender.location(in: self.sharkImage)
print(touchPoint)
// Get points from the image itself
let z1 = touchPoint.x * (sharkImage.image?.size.width)! / sharkImage.frame.width
let z2 = touchPoint.y * (sharkImage.image?.size.height)! / sharkImage.frame.height
print("Touched point (\(z1), \(z2)")
}
1 个解决方案
#1
1
In your tapAction
:
在你的tapAction中:
let pin = UIImageView(frame: CGRect(x: touchPoint.x - 20, y: touchPoint.y - 20, width: 40, height: 40))
pin.image = UIImage(named: "pin")
sharkImage.addSubview(pin)
So what I´m doing is adding a new UIImageView
with the x
and y
from touchPoint.x
and touchPoint.y
into your current sharkImage
.
所以我正在做的是添加一个新的UIImageView,其中x和y从touchPoint.x和touchPoint.y到你当前的sharkImage。
#1
1
In your tapAction
:
在你的tapAction中:
let pin = UIImageView(frame: CGRect(x: touchPoint.x - 20, y: touchPoint.y - 20, width: 40, height: 40))
pin.image = UIImage(named: "pin")
sharkImage.addSubview(pin)
So what I´m doing is adding a new UIImageView
with the x
and y
from touchPoint.x
and touchPoint.y
into your current sharkImage
.
所以我正在做的是添加一个新的UIImageView,其中x和y从touchPoint.x和touchPoint.y到你当前的sharkImage。