Core Plot Swift BarPlot tickLocation always zero - ios

Question

I'm trying to make a Bar Chart using core-plot under Swift, i have a problem making custom labels on xAxis, they're always in tickLocation zero.
Maybe someone can help me, this is my code.
import UIKit
class aaa: UIViewController, CPTPlotDataSource{
var items :[NSNumber] = [10,35,18, 20, 50, 5]
#IBOutlet var scrollView: UIScrollView!
#IBOutlet weak var lblTitle: UILabel!
#IBOutlet weak var lblChartName: UILabel!
#IBOutlet weak var vGraph: CPTGraphHostingView!
override func awakeFromNib() {
super.awakeFromNib()
}
override func viewDidLoad() {
super.viewDidLoad()
self.scrollView.contentSize = CGSizeMake(320, 568);
var id: Int=general.idListed
lblTitle.text=general.namListed
items = [10, 35, 18, 20, 50, 5]
var CPDBarWidth:CGFloat = 0.25
var CPDBarInitialX:CGFloat = 0.25
var graph = CPTXYGraph(frame: CGRectZero)
graph.plotAreaFrame.masksToBorder = false
graph.paddingBottom = 50.0
graph.paddingLeft = 50.0
graph.paddingTop = 50.0
graph.paddingRight = 50.0
graph.backgroundColor = UIColor.whiteColor().CGColor
var titleStyle = CPTMutableTextStyle()
titleStyle.color = CPTColor.blackColor()
titleStyle.fontName = "Helvetica-Bold"
titleStyle.fontSize = 16.0
var title : NSString = "January 19 - 24, 2015"
graph.title = title
graph.titleTextStyle = titleStyle
graph.titlePlotAreaFrameAnchor = CPTRectAnchorTop
graph.titleDisplacement = CGPointMake(0.0, 40.0)
var xMin : Float = 0
var xMax : Float = Float(items.count) + 1
var yMin : Float = 0
var yMax : Float = maxItemsValue(items) + 5
var plotSpace = graph.defaultPlotSpace as CPTXYPlotSpace
var xRange = plotSpace.yRange.mutableCopy() as CPTMutablePlotRange
var yRange = plotSpace.yRange.mutableCopy() as CPTMutablePlotRange
xRange.setLocationFloat(xMin)
xRange.setLengthFloat(xMax)
yRange.setLocationFloat(yMin)
yRange.setLengthFloat(yMax)
plotSpace.xRange = xRange
plotSpace.yRange = yRange
var aaplPlot = CPTBarPlot()
aaplPlot.barsAreHorizontal = false
var barLineStyle = CPTMutableLineStyle()
barLineStyle.lineColor = CPTColor.lightGrayColor()
barLineStyle.lineWidth = 1
aaplPlot.dataSource = self
aaplPlot.delegate = self
aaplPlot.barWidthScale = 1
aaplPlot.barOffsetScale = 1
aaplPlot.lineStyle = barLineStyle
graph.addPlot(aaplPlot)
var axisTitleStyle = CPTMutableTextStyle()
axisTitleStyle.color = CPTColor.redColor()
axisTitleStyle.fontName = "Helvetica-Bold"
axisTitleStyle.fontSize = 12.0
var axisLineStyle = CPTMutableLineStyle()
axisLineStyle.lineWidth = 4.0
axisLineStyle.lineColor = CPTColor.redColor()
var axisSet = CPTXYAxisSet()
graph.axisSet = axisSet
axisSet.xAxis.labelingPolicy = CPTAxisLabelingPolicyNone
axisSet.xAxis.title = "Days of Week"
axisSet.xAxis.titleTextStyle = axisTitleStyle
axisSet.xAxis.titleOffset = 30.0
axisSet.xAxis.majorTickLength = 4
axisSet.xAxis.minorTickLength = 0
axisSet.xAxis.tickDirection = CPTSignNegative
axisSet.xAxis.axisLineStyle = axisLineStyle
var customLabels : NSMutableArray = NSMutableArray (capacity: items.count)
var tickLocations : NSMutableArray = NSMutableArray (capacity: items.count)
var labels : [String] = ["MON","THU","WEN","THR","FRI","SAT"]
var next : Int = 0
var newLabel : CPTAxisLabel
for item in items {
var xlabel : String = labels[next]
next++;
var tstyle : CPTMutableTextStyle = CPTMutableTextStyle()
tstyle.color = CPTColor.blueColor()
tstyle.fontSize = 10
newLabel = CPTAxisLabel(text: xlabel, textStyle: tstyle);
newLabel.setTickLocationFloat(Float(next))
newLabel.offset = 5
customLabels.addObject(newLabel)
tickLocations.addObject(Float(next))
}
axisSet.xAxis.majorTickLocations = NSSet(array: tickLocations)
axisSet.xAxis.axisLabels = NSSet(array: customLabels)
self.vGraph.hostedGraph = graph
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
func maxItemsValue(items :[NSNumber])-> NSNumber{
var max : NSNumber=0
for item in items{
if item.floatValue > max.floatValue {
max = item
}
}
return max
}
func numberOfRecordsForPlot(plot: CPTPlot!) -> UInt {
return UInt(items.count)
}
func numberForPlot(plot: CPTPlot!, field fieldEnum: UInt, recordIndex idx: UInt) -> NSNumber! {
switch (fieldEnum) {
case 0:
if (idx < UInt(items.count)) {
return idx + 1
}
break;
case 1:
return items[Int(idx)]
default:
return 1
}
return 1
}
}

Answer 1

You need to set the tickLocation of each new label.
newLabel.tickLocation = next