App crashed every time a value is added #177
Description
Keeps on crashing the app , what am I missing here???
this is where it crashes:
internal func setPlotPointPositions(forNewlyActivatedPoints activatedPoints: [Int], withData data: [Double]) {
var index = 0
for activatedPointIndex in activatedPoints {
let dataPosition = index
let value = data[dataPosition]
let newPosition = graphViewDrawingDelegate.calculatePosition(atIndex: activatedPointIndex, value: value)
graphPoints[activatedPointIndex].x = newPosition.x. <<<<------ right here
graphPoints[activatedPointIndex].y = newPosition.y
index += 1
}
}
error: Thread 1: Fatal error: Index out of range
on initial load , no issues.
every time a child is added to firebase it updates a collection view and the scrollable graph
but it crashes every time:
here is my code:
override func viewDidLoad() {
super.viewDidLoad()
setupViews()
dataSource()
collectionviewSize()
fetchDatasBmiHistory()
setupGraph()
}
func dataSource() {
graph.dataSource = self
}
func fetchDatasBmiHistory() {
if shared.currentUser == nil {
return
}
guard let userID = Auth.auth().currentUser?.uid else { return }
shared.ref_userBMI.child(userID).observe(.childAdded) { (snapshot) in
if !snapshot.exists() {
shared.errorCard("Error fetching datas")
return }
if let dictionary = snapshot.value as? [String: AnyObject] {
let user = UserBMI(dictionary: dictionary)
shared.bmiArray.append(user)
}
DispatchQueue.main.async{
self.collectionView.reloadData()
self.graph.reload()
}
}
}
func value(forPlot plot: Plot, atIndex pointIndex: Int) -> Double {
switch(plot.identifier) {
case "bmi":
return shared.bmiArray[pointIndex].bmi ?? 20
default:
return 0
}
}
func label(atIndex pointIndex: Int) -> String {
return shared.convertTimestamp(serverTimestamp: shared.bmiArray[pointIndex].timestamp ?? 0)
}
func numberOfPoints() -> Int {
return shared.bmiArray.count
}
func setupGraph() {
let BMI = LinePlot(identifier: "bmi")
BMI.lineWidth = 3
BMI.lineColor = .systemPink
BMI.lineStyle = ScrollableGraphViewLineStyle.smooth
BMI.shouldFill = true
BMI.fillType = ScrollableGraphViewFillType.gradient
BMI.fillColor = UIColor.systemPink.withAlphaComponent(0.4)
BMI.fillGradientStartColor = .systemYellow
BMI.fillGradientEndColor = UIColor.systemPink.withAlphaComponent(0.7)
BMI.adaptAnimationType = ScrollableGraphViewAnimationType.elastic
let referenceLines = ReferenceLines()
referenceLines.referenceLineLabelFont = UIFont.boldSystemFont(ofSize: 12)
referenceLines.referenceLineColor = .quaternaryLabel
referenceLines.referenceLineLabelColor = .secondaryLabel
referenceLines.dataPointLabelFont = UIFont.boldSystemFont(ofSize: 11)
referenceLines.dataPointLabelColor = .white
referenceLines.shouldAddUnitsToIntermediateReferenceLineLabels = true
referenceLines.shouldAddLabelsToIntermediateReferenceLines = true
referenceLines.includeMinMax = true
referenceLines.referenceLineNumberOfDecimalPlaces = 2
let dotPlot = DotPlot(identifier: "darkLineDot")
dotPlot.dataPointSize = 1
dotPlot.dataPointFillColor = .secondarySystemFill
dotPlot.adaptAnimationType = ScrollableGraphViewAnimationType.elastic
graph.addReferenceLines(referenceLines: referenceLines)
graph.addPlot(plot: BMI)
}