设置未来的日期

Question

在设置未来日期时遇到一些问题。实际上我正在尝试这样做，

NSDate *date = [NSDate date] + MY_EXTRA_TIME;

Answer 1

应该是，

NSTimeInterval MY_EXTRA_TIME = 10; // 10 Seconds
NSDate *futureDate = [[NSDate date] dateByAddingTimeInterval:MY_EXTRA_TIME];

Answer 2

Swift

let delay:NSTimeInterval = 5
let fireDate = NSDate().dateByAddingTimeInterval(delay)