计算时间差.png
//结束时间
NSDateFormatter*dateFormatter = [[NSDateFormatteralloc]init];
[dateFormattersetDateFormat:@"yyyy-MM-dd HH:mm:ss"];
NSDate*overdate = [dateFormatterdateFromString:@"2016-09-30 10:10:00"];
NSTimeZone*zone1 = [NSTimeZonesystemTimeZone];
NSIntegerinterva1 = [zone1secondsFromGMTForDate: overdate];
NSDate*endDate = [overdatedateByAddingTimeInterval: interva1];
//获取当前时间
NSDate*date = [NSDatedate];
NSTimeZone*zone2 = [NSTimeZonesystemTimeZone];
NSIntegerinterva2 = [zone2secondsFromGMTForDate: date];
NSDate*currentDate = [datedateByAddingTimeInterval: interva2];
NSLog(@"currentDate=%@ --endDate-%@",currentDate,endDate);
NSTimeIntervaltime=[endDatetimeIntervalSinceDate:currentDate];
NSLog(@"-=========%f",time);
