将NSNumber(双精度)值转换为时间 [英] Convert NSNumber (double) value into time

问题描述

我尝试将"898.171813964844"之类的值转换为00:17:02(hh:mm:ss).

i try to convert a value like "898.171813964844" into 00:17:02 (hh:mm:ss).

这如何在目标c中完成?

How can this be done in objective c?

感谢帮助！

推荐答案

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]);

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