本地化经过的时间

Question

在我的应用程序中,我需要以mm:ss格式显示已用时间.现在,我们必须本地化应用程序.我们该如何定位这段经过的时间？

Answer 1

您想使用 NSDateFormatter 类：

http://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Classes/NSDateFormatter_Class/Reference/Reference.html

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setTimeStyle:NSDateFormatterShortStyle];
[dateFormatter setDateStyle:NSDateFormatterNoStyle];

NSDate *date = [NSDate dateWithTimeIntervalSinceReferenceDate:118800];

// Specifying a locale only for the purpose of this example
// if you don't specify one, it will use the user's locale, which is what you want
NSLocale *usLocale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US"];
[dateFormatter setLocale:usLocale];

NSLog(@"Date for locale %@: %@",
      [[dateFormatter locale] localeIdentifier], [dateFormatter stringFromDate:date]);
// Output:
// Date for locale en_US: 4:00 AM