NSDate - 设置未来日期

Question

在设置未来日期时面临一些问题。其实我正在尝试这样做

NSDate *date = [NSDate date] + MY_EXTRA_TIME;

Answer 1

那应该是，

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

Answer 2

斯威夫特

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