IOS获取两个时间的毫秒差

by 伍雪颖

NSString *savedTime = [[NSUserDefaults standardUserDefaults] stringForKey:@"time"];NSString *time = [NSString stringWithFormat:@"%f", (double)[[NSDate date] timeIntervalSince1970]];NSLog(@"\n%@\n%@",time,savedTime);NSLog(@"%.f",([time doubleValue] - [savedTime doubleValue]) * 1000);[[NSUserDefaults standardUserDefaults] setObject:time forKey:@"time"];[[NSUserDefaults standardUserDefaults] synchronize];