objective-c - 将 NSNumber (double) 值转换为时间

Question

我尝试将“898.171813964844”之类的值转换为 00:17:02 (hh:mm:ss)。

如何在 objective-c 中做到这一点？

感谢您的帮助!

Answer 1

最终解决方案:

NSNumber *time = [NSNumber numberWithDouble:([online_time doubleValue] - 3600)];
NSTimeInterval interval = [time doubleValue];    
NSDate *online = [NSDate date];
online = [NSDate dateWithTimeIntervalSince1970:interval];    
NSDateFormatter *dateFormatter = [[[NSDateFormatter alloc] init] autorelease];
[dateFormatter setDateFormat:@"HH:mm:ss"];

NSLog(@"result: %@", [dateFormatter stringFromDate:online]);