HeartRateCell.swift
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//
// HeartRateCell.swift
// Twear
//
// Created by yangbin on 2021/11/16.
//
import UIKit
import Charts
class HeartRateCell: UICollectionViewCell {
@IBOutlet weak var hrValueLabel: UILabel!
@IBOutlet weak var dateLabel: UILabel!
@IBOutlet weak var noDataImageView: UIImageView!
@IBOutlet weak var lineChartView: LineChartView!
var hrHistory: [HeartRateModel] = [] {
didSet {
let count = hrHistory.count
if count == 0 {
hrValueLabel.text = "--"
dateLabel.text = LocString("暂无数据")
noDataImageView.isHidden = false
lineChartView.isHidden = true
} else {
hrValueLabel.text = "\(hrHistory[count-1].value)"
dateLabel.text = hrHistory[count-1].date!.toString(.custom("yyyy/MM/dd"))
updateChartView(hrHistory)
noDataImageView.isHidden = true
lineChartView.isHidden = false
}
}
}
private func updateChartView(_ hrHistory: [HeartRateModel]) {
setupChartView()
let hr = hrHistory.max{$0.value < $1.value}
let maxHr = max(hr?.value ?? 100, 100)
lineChartView.leftAxis.axisMaximum = Double(maxHr) * 1.1
var dataEntries = [ChartDataEntry]()
for (i, hr) in hrHistory.enumerated() {
dataEntries.append(ChartDataEntry(x: Double(i), y: Double(hr.value)))
}
if dataEntries.count == 1 {
dataEntries.append(ChartDataEntry(x: dataEntries[0].x+0.5, y: dataEntries[0].y))
}
let dataSet = LineChartDataSet(entries: dataEntries, label: nil)
dataSet.drawCirclesEnabled = false
dataSet.drawValuesEnabled = false
dataSet.mode = .cubicBezier
dataSet.setDrawHighlightIndicators(false)
dataSet.setColor(UIColor.rgbColorFromHex(0xFF0000))
dataSet.lineWidth = 1
dataSet.drawFilledEnabled = true
let gradientColors = [UIColor.rgbColorFromHex(0xE10025).cgColor, UIColor.rgbColorFromHex(0xFFFFFF).cgColor]
let gradient = CGGradient(colorsSpace: nil, colors: gradientColors as CFArray, locations: [1.0, 0.0])
dataSet.fillAlpha = 1.0
dataSet.fill = Fill(linearGradient: gradient!, angle: 90)
lineChartView.data = LineChartData(dataSets: [dataSet])
}
func setupChartView() {
lineChartView.chartDescription?.enabled = false
lineChartView.legend.enabled = false
lineChartView.setScaleEnabled(false)
lineChartView.rightAxis.enabled = false
let leftAxis = lineChartView.leftAxis
leftAxis.axisMinimum = 50 //设置左侧Y轴最小值
leftAxis.granularity = 10
leftAxis.enabled = false
let xAxis = lineChartView.xAxis
xAxis.axisMinimum = 0
xAxis.axisMaximum = 30
xAxis.granularity = 1 //间隔
xAxis.enabled = false
}
override func awakeFromNib() {
super.awakeFromNib()
// lineChartView.isUserInteractionEnabled = false
// Initialization code
}
}