以毫秒为单位获取当前日期 [英] Get current date in milliseconds

问题描述

Can any one give me an idea how to get the current date in milliseconds?

解决方案

There are several ways of doing this, although my personal favorite is:

CFAbsoluteTime timeInSeconds = CFAbsoluteTimeGetCurrent();

You can read more about this method here. You can also create a NSDate object and get time by calling timeIntervalSince1970 which returns the seconds since 1/1/1970:

NSTimeInterval timeInSeconds = [[NSDate date] timeIntervalSince1970];

And in Swift:

let timeInSeconds: TimeInterval = Date().timeIntervalSince1970

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