我有一个“热点视图”数组，它只是UIImage的，还有一个stackview数组，每个包含两个标签。我试图得到热点视图图像的颜色和其中一个标签更改为红色时，热点视图被点击。在一天的大部分时间里，我似乎都不知道怎么用谷歌搜索。任何洞察都是伟大的。
下面是我的代码：
我已经在tap手势函数中注释了我希望实现的功能，但是我不知道如何访问stackview中的嵌套标签，也不知道im是否正确使用了tap手势识别器。
import UIKit
import OAStackView
protocol StandMapHotspotLayerViewDataSource {
func numberOfHotspots(standMapHotspotLayerView: StandMapHotspotLayerView) -> Int
func hotspotViewForIndex(index: Int, inStandMapHotspotLayerView: StandMapHotspotLayerView) -> (UIView, OAStackView)
}
struct HotspotDataSource {
var stackView: [OAStackView] = []
var hotspotView: [UIView] = []
}
class StandMapHotspotLayerView: UIView {
var dataSource: StandMapHotspotLayerViewDataSource?
var hotspotDataSource = HotspotDataSource()
override func layoutSubviews() {
super.layoutSubviews()
let hotspotCount = self.dataSource?.numberOfHotspots(self) ?? 0
(0..<hotspotCount).map({ index in
return self.dataSource!.hotspotViewForIndex(index, inStandMapHotspotLayerView: self)
}).forEach({ hotspotView, stackView in
hotspotDataSource.hotspotView.append(hotspotView)
hotspotDataSource.stackView.append(stackView)
hotspotView.userInteractionEnabled = true
let gesture = UITapGestureRecognizer(target: hotspotView, action: #selector(self.hotspotWasPressed(_:)))
self.addGestureRecognizer(gesture)
self.addSubview(hotspotView)
self.addSubview(stackView)
})
addLine()
}
func hotspotWasPressed(sender: UITapGestureRecognizer) {
//
// sender.numberOfTouchesRequired = 1
//
// let hotspotView = hotspotDataSource.hotspotView[index]
// let stackView = hotspotDataSource.stackView[index]
//
// hotspotView.tintColor = UIColor(red: 157, green: 27, blue: 50, alpha: 1)
// stackView
}
func addLine() {
let path = UIBezierPath()
let shapeLayer = CAShapeLayer()
for index in 0..<self.dataSource!.numberOfHotspots(self) {
let stackView = hotspotDataSource.stackView[index]
let hotspotView = hotspotDataSource.hotspotView[index]
if stackView.frame.origin.y < 100 {
let stackViewPoint = CGPointMake(stackView.frame.origin.x + stackView.frame.size.width / 2, stackView.frame.origin.y + stackView.frame.size.height)
let imageViewPoint = CGPointMake((hotspotView.frame.origin.x + hotspotView.frame.size.width / 2), hotspotView.frame.origin.y)
path.moveToPoint(stackViewPoint)
path.addLineToPoint(imageViewPoint)
} else {
let stackViewPoint = CGPointMake(stackView.frame.origin.x + stackView.frame.size.width / 2, stackView.frame.origin.y)
let imageViewPoint = CGPointMake((hotspotView.frame.origin.x + hotspotView.frame.size.width / 2), hotspotView.frame.origin.y + hotspotView.bounds.size.height)
path.moveToPoint(stackViewPoint)
path.addLineToPoint(imageViewPoint)
}
shapeLayer.path = path.CGPath
shapeLayer.strokeColor = UIColor.whiteColor().CGColor
shapeLayer.lineWidth = 0.2
shapeLayer.fillColor = UIColor.whiteColor().CGColor
self.layer.addSublayer(shapeLayer)
}
}
func reloadData() {
self.setNeedsLayout()
}
}
谢谢你事先的帮助。
最佳答案
明白了。请参见下面的代码：
import UIKit
import OAStackView
protocol StandMapHotspotLayerViewDataSource {
func numberOfHotspots(standMapHotspotLayerView: StandMapHotspotLayerView) -> Int
func hotspotViewForIndex(index: Int, inStandMapHotspotLayerView: StandMapHotspotLayerView) -> (UIImageView, OAStackView)
}
struct HotspotViews {
var stackView: [OAStackView] = []
var hotspotView: [UIImageView] = []
}
class StandMapHotspotLayerView: UIView {
var dataSource: StandMapHotspotLayerViewDataSource?
var hotspotViews = HotspotViews()
override func layoutSubviews() {
super.layoutSubviews()
let hotspotCount = self.dataSource?.numberOfHotspots(self) ?? 0
var i: Int = 0
(0..<hotspotCount).map({ index in
return self.dataSource!.hotspotViewForIndex(index, inStandMapHotspotLayerView: self)
}).forEach({ hotspotView, stackView in
hotspotViews.hotspotView.append(hotspotView)
hotspotViews.stackView.append(stackView)
hotspotView.userInteractionEnabled = true
hotspotView.tag = i
let gesture = UITapGestureRecognizer(target: self, action: #selector(self.hotspotWasPressed(_:)))
hotspotView.addGestureRecognizer(gesture)
self.addSubview(hotspotView)
self.addSubview(stackView)
i += 1
})
addLine()
}
func hotspotWasPressed(sender: UITapGestureRecognizer) {
let index = sender.view!.tag
let hotspot = hotspotViews.hotspotView[index]
let textLabel = hotspotViews.stackView[index].arrangedSubviews.first as? UILabel
hotspot.image = UIImage(named: "RedHotspotImage")
textLabel?.textColor = UIColor(red: 158/255, green: 27/255, blue: 50/255, alpha: 1)
//go to hotspot url: StandMapView.hotspots[index].url
}
func addLine() {
let path = UIBezierPath()
let shapeLayer = CAShapeLayer()
for index in 0..<self.dataSource!.numberOfHotspots(self) {
let stackView = hotspotViews.stackView[index]
let hotspotView = hotspotViews.hotspotView[index]
if stackView.frame.origin.y < 100 {
let stackViewPoint = CGPointMake(stackView.frame.origin.x + stackView.frame.size.width / 2, stackView.frame.origin.y + stackView.frame.size.height)
let imageViewPoint = CGPointMake((hotspotView.frame.origin.x + hotspotView.frame.size.width / 2), hotspotView.frame.origin.y)
path.moveToPoint(stackViewPoint)
path.addLineToPoint(imageViewPoint)
} else {
let stackViewPoint = CGPointMake(stackView.frame.origin.x + stackView.frame.size.width / 2, stackView.frame.origin.y)
let imageViewPoint = CGPointMake((hotspotView.frame.origin.x + hotspotView.frame.size.width / 2), hotspotView.frame.origin.y + hotspotView.bounds.size.height)
path.moveToPoint(stackViewPoint)
path.addLineToPoint(imageViewPoint)
}
shapeLayer.path = path.CGPath
shapeLayer.strokeColor = UIColor.whiteColor().CGColor
shapeLayer.lineWidth = 0.2
shapeLayer.fillColor = UIColor.whiteColor().CGColor
self.layer.addSublayer(shapeLayer)
}
}
func reloadData() {
self.setNeedsLayout()
}
}
重要的部分是在热点视图上传递.tag，然后通过
stackView[index].arrangedSubviews.first作为？UILabel公司
谢谢
关于ios - 点按单独的图像时，以编程方式更改stackView嵌套标签的颜色。 swift ，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/39251501/