如果可能的话,我想将我的大数字从100,000改为$100K.
这是我到目前为止：
let valueFormatter = NSNumberFormatter() valueFormatter.locale = NSLocale.currentLocale() valueFormatter.numberStyle = .CurrencyStyle valueFormatter.maximumFractionDigits = 0
我的问题
使用NSNumberFormatter,我如何输出$100K而不是$100,000？
我原来的问题：
这是我到目前为止：
self.lineChartView.leftAxis.valueFormatter = NSNumberFormatter() self.lineChartView.leftAxis.valueFormatter?.locale = NSLocale.currentLocale() self.lineChartView.leftAxis.valueFormatter?.numberStyle = .CurrencyStyle self.lineChartView.leftAxis.valueFormatter?.maximumFractionDigits = 0
其中翻译为：
let valueFormatter = NSNumberFormatter() valueFormatter.locale = NSLocale.currentLocale() valueFormatter.numberStyle = .CurrencyStyle valueFormatter.maximumFractionDigits = 0
我的输出如下：
我的问题
使用NSNumberFormatter,000？
更新：
我想提供有关最新情况的背景,观看评论.
func setDollarsData(months: [String],range: Double) {
var dataSets: [LineChartDataSet] = [LineChartDataSet]()
var yVals: [ChartDataEntry] = [ChartDataEntry]()
for var i = 0; i < months.count; i++ {
// I'm adding my values here in value:,value takes a Double
yVals.append(ChartDataEntry(value: county[userFavs[0]]![i],xIndex: i))
}
let set1: LineChartDataSet = LineChartDataSet(yVals: yVals,label: self.userFavs[0])
set1.axisDependency = .Left
set1.setColor(UIColor.redColor().colorWithAlphaComponent(0.5))
set1.setCircleColor(UIColor.redColor())
set1.lineWidth = 2.0
set1.circleRadius = 6.0
set1.fillAlpha = 65 / 255.0
dataSets.append(set1)
let data: LineChartData = LineChartData(xVals: months,dataSets: dataSets)
data.setValueTextColor(UIColor.whiteColor())
// this is where I set the number formatter
self.lineChartView.gridBackgroundColor = UIColor.darkGrayColor()
self.lineChartView.leftAxis.startAtZeroEnabled = false
self.lineChartView.leftAxis.valueFormatter = NSNumberFormatter()
self.lineChartView.leftAxis.valueFormatter?.locale = NSLocale.currentLocale()
self.lineChartView.leftAxis.valueFormatter?.numberStyle = .CurrencyStyle
self.lineChartView.leftAxis.valueFormatter?.maximumFractionDigits = 0
// set it to the chart // END OF THE LINE
self.lineChartView.data = data // outputs to my chart
}
正如您所看到的,一旦我将数字转储到yVals中,我就失去了对它们的访问权限,因此这些扩展只有在我入侵框架时才能工作.
编辑/更新
Swift 3或更高版本
extension FloatingPoint {
var kFormatted: String {
return String(format: self >= 1000 ? "$%.0fK" : "$%.0f",(self >= 1000 ? self/1000 : self) as! CVarArg )
}
}
您可以像这样使用它来格式化您的输出：
10.0.kFormatted // "$10" 100.0.kFormatted // "$100" 1000.0.kFormatted // "$1K" 10000.0.kFormatted // "$10K" 162000.0.kFormatted // "$162K" 153000.0.kFormatted // "$153K" 144000.0.kFormatted // "$144K" 135000.0.kFormatted // "$135K" 126000.0.kFormatted // "$126K"
