swift - 测量格式化程序 : space between value and unit

Question

我有一个 Measurement 属性:

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

我想打印成一个字符串。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。

如何让它打印 10,000 g，即在值和单位之间有一个空格？

Answer 1

问题是您使用的是 .short 样式。只需注释掉这一行，它们之间就会显示一个空格:

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"