ios时间相差多少天_iOS 时间差计算(NSDate)

第一种:

//计算任意2个时间的之间的间隔

- (NSTimeInterval)pleaseInsertStarTime:(NSString *)starTime andInsertEndTime:(NSString *)endTime{

NSDateFormatter* formater = [[NSDateFormatter alloc] init];

[formater setDateFormat:@"mm:ss"];//根据自己的需求定义格式

NSDate* startDate = [formater dateFromString:starTime];

NSDate* endDate = [formater dateFromString:endTime];

NSTimeInterval time = [endDate timeIntervalSinceDate:startDate];

return time;

}

第二种:

- (void)pleaseInsertStarTimeo:(NSString *)time1 andInsertEndTime:(NSString *)time2{

// 1.将时间转换为date

NSDateFormatter *formatter = [[NSDateFormatter alloc] init];

formatter.dateFormat = @"yyyy-MM-dd HH:mm:ss";

NSDate *date1 = [formatter dateFromString:time1];

NSDate *date2 = [formatter dateFromString:time2];

// 2.创建日历

NSCalendar *calendar = [NSCalendar currentCalendar];

NSCalendarUnit type = NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond;

// 3.利用日历对象比较两个时间的差值

NSDateComponents *cmps = [calendar components:type fromDate:date1 toDate:date2 options:0];

// 4.输出结果

NSLog(@"两个时间相差%ld年%ld月%ld日%ld小时%ld分钟%ld秒", cmps.year, cmps.month, cmps.day, cmps.hour, cmps.minute, cmps.second);

}

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