我有一个“热点视图”数组，它们只是UIImage和一组stackviews，每个视图包含两个标签。我试图获取热点视图图像的颜色，并在点击热点视图时将其中一个标签更改为红色。我似乎无法通过谷歌搜索一天的大部分时间。任何见解都会很棒。
以下是我的代码：
我已经在点击手势功能中注释了我希望实现的内容，但我不知道如何访问stackview中的嵌套标签，或者我是否正确使用了手势识别器。
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()
}
}
感谢您提前提供任何帮助。
答案 0 :(得分：0)
想出来。请参阅以下代码：
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，然后访问stackview中的标签 stackView [index] .arrangedSubviews.first as？的UILabel
感谢