[iOS]判断当前时间是否在指定的时间段内

/**
* @brief 判断当前时间是否在fromHour和toHour之间。如，fromHour=8，toHour=23时，即为判断当前时间是否在8:00-23:00之间
*/
+ (BOOL)isBetweenFromHour:(NSInteger)fromHour FromMinute:(NSInteger)fromMin toHour:(NSInteger)toHour toMinute:(NSInteger)toMin
{
NSDate *date8 = [self getCustomDateWithHour:8 andMinute:fromMin];
NSDate *date23 = [self getCustomDateWithHour:23 andMinute:toMin];

NSDate *currentDate = [NSDate date];

if ([currentDate compare:date8]==NSOrderedDescending && [currentDate compare:date23]==NSOrderedAscending)
{
NSLog(@"该时间在 %d:%d-%d:%d 之间！", fromHour, fromMin, toHour, toMin);
return YES;
}
return NO;
}

/**
* @brief 生成当天的某个点（返回的是伦敦时间，可直接与当前时间[NSDate date]比较）
* @param hour 如hour为“8”，就是上午8:00（本地时间）
*/
+ (NSDate *)getCustomDateWithHour:(NSInteger)hour andMinute:(NSInteger)minute
{
//获取当前时间
NSDate *currentDate = [NSDate date];
NSCalendar *currentCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
NSDateComponents *currentComps = [[NSDateComponents alloc] init];

NSInteger unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit | NSDayCalendarUnit | NSWeekdayCalendarUnit | NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit;

currentComps = [currentCalendar components:unitFlags fromDate:currentDate];

//设置当天的某个点
NSDateComponents *resultComps = [[NSDateComponents alloc] init];
[resultComps setYear:[currentComps year]];
[resultComps setMonth:[currentComps month]];
[resultComps setDay:[currentComps day]];
[resultComps setHour:hour];
[resultComps setMinute:minute];

NSCalendar *resultCalendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSGregorianCalendar];
return [resultCalendar dateFromComponents:resultComps];
}