测量格式化程序：space 介于值和单位之间

Question

我有一个 Measurement 属性：

let measurement = Measurement(value: 10000.0, unit: UnitMass.grams)

我想打印成字符串。我使用以下 MeasurementFormatter:

let measurementFormatter = MeasurementFormatter()
measurementFormatter.unitStyle = .short
measurementFormatter.numberFormatter.numberStyle = .decimal

print(measurementFormatter.string(from: measurement))

打印 10,000g.

如何打印 10,000 g，即在值和单位之间添加 space？

Answer 1

问题是您使用的样式 .short。只需注释掉这一行，它就会在它们之间显示一个 space：

let measurement = Measurement(value: 10000, unit: UnitMass.grams)
let measurementFormatter = MeasurementFormatter()
// measurementFormatter.unitStyle = .short
measurementFormatter.unitOptions = .providedUnit
measurementFormatter.numberFormatter.numberStyle = .decimal
print(measurementFormatter.string(from: measurement))    // "10,000 g\n"

测量格式化程序：space 介于值和单位之间

Measurement Formatter: space between value and unit

string

swift

ios10

measurementformatter