测量格式化程序：值和单位之间的空格

Question

我有一个 Measurement 属性：

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

我想将其作为字符串打印。我使用以下MeasurementFormatter：

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

print(measurementFormatter.string(from: measurement))

这段代码会输出10,000g。

如何让它输出10,000 g，即值和单位之间有一个空格？

- ajrlewis

Answer 1

问题在于您正在使用样式.short。只需将此行注释掉即可在它们之间显示一个空格：

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"

- Leo Dabus