ios - 获取上个月的天数

Question

如何获取前一个月的总天数？

i.e = Current Month is June, So I want May month Total number of days.(Output = 31)

这是我尝试过的方法，但没有用。

让 PrevDate = Calendar.current.date(byAdding: .month, value: -1, to: Date())

Answer 1

这些是用法:

let calendar = Calendar.current
let date1 = calendar.date(byAdding: .month, value: -1, to: Date())! // -1 mean previous month

let range = calendar.range(of: .day, in: .month, for: date1)!
let numDays = range.count
print(numDays)

输出:

31