How to compare curent time lie between two time slot - iphone

Question

I hava an array of NSDictionary like this.
{
id = 12;
"time_from" = "12:00";
"time_to" = "16:00";
"timing_name" = Lunch;
},
{
id = 11;
"time_from" = "08:00";
"time_to" = "12:00";
"timing_name" = BreakFast;
},
{
id = 13;
"time_from" = "09:00";
"time_to" = "10:00";
"timing_name" = Dinner;
}
Suppose my current time is 8:45 then how can we find exact dictionary using predicate if current time exit between time_from and time_to.
Actully i need a predicate.

Answer 1

You can try this,
NSMutableArray *testArray = [NSMutableArray array];
NSMutableDictionary *testDict = [NSMutableDictionary dictionary];
[testDict setObject:#"12:45" forKey:#"time-from"];
[testDict setObject:#"14:45" forKey:#"time-to"];
[testArray addObject:testDict];
NSPredicate *timePredicate = [NSPredicate predicateWithBlock:^BOOL(NSMutableDictionary *dict, NSDictionary *bindings) {
NSString *timeFromString = [dict objectForKey:#"time-from"];
NSString *timeToString = [dict objectForKey:#"time-from"];
// find minutes from 00-0
//get current time minutes from 00-00
return (currentTimeMinutes>startimeMinutes) && (currentTimeMinutes<=endtimeMinutes)
}];
[testArray filterUsingPredicate:timePredicate];

Answer 2

-(void)makeCalculation
{
NSMutableDictionary *temp=[[NSMutableDictionary alloc]init];
[temp setObject:#"13" forKey:#"id"];
[temp setObject:#"12:00" forKey:#"timeFrom"];
[temp setObject:#"16:00" forKey:#"timeTo"];
NSMutableDictionary *temp1=[[NSMutableDictionary alloc]init];
[temp1 setObject:#"13" forKey:#"id"];
[temp1 setObject:#"08:00" forKey:#"timeFrom"];
[temp1 setObject:#"12:00" forKey:#"timeTo"];
NSMutableDictionary *temp2=[[NSMutableDictionary alloc]init];
[temp2 setObject:#"13" forKey:#"id"];
[temp2 setObject:#"09:00" forKey:#"timeFrom"];
[temp2 setObject:#"10:00" forKey:#"timeTo"];
NSMutableArray *arrayOfDict=[[NSMutableArray alloc]init];
[arrayOfDict addObject:temp];
[arrayOfDict addObject:temp1];
[arrayOfDict addObject:temp2];
NSMutableArray *timeToCompare=[[NSMutableArray alloc]initWithObjects:#"8:45",#"8:45", nil];
for(int k=0;k<[arrayOfDict count];k++)
{
NSMutableDictionary *temp=[arrayOfDict objectAtIndex:k];
NSString *timeFrom=[temp objectForKey:#"timeFrom"];
NSString *timeTo=[temp objectForKey:#"timeTo"];
NSMutableArray *tempTocheck=[[NSMutableArray alloc]initWithObjects:timeFrom,timeTo, nil];
if([self isTimeClash:timeToCompare compareWith:tempTocheck])
{
NSLog(#"Time Belong in id:%#",[temp objectForKey:#"id"]);
}
}
}
-(BOOL)isTimeClash:(NSMutableArray *)timeToCheck compareWith:(NSMutableArray *)timeToCompare
{
int Start1=[self getMinitesFromTime:[timeToCheck objectAtIndex:0]];
int end1=[self getMinitesFromTime:[timeToCheck objectAtIndex:1]];
int start2=[self getMinitesFromTime:[timeToCompare objectAtIndex:0]];
int end2=[self getMinitesFromTime:[timeToCompare objectAtIndex:1]];
if(start2>=end1 || end2<=Start1)
{
NSLog(#"Clash not happeed");
return NO;
}
else
{
NSLog(#"clash hapens ");
return YES;
}
}
-(int)getMinitesFromTime:(NSString *)timeINHours
{
NSInteger hrVal1 = [(timeINHours) intValue] ;
NSArray *array1 = [timeINHours componentsSeparatedByString:#":"];
int minVal1 = [[array1 lastObject]intValue];
hrVal1 = hrVal1 *60;
minVal1 = hrVal1 + minVal1;
return minVal1;
}

Answer 3

Try to use this one...
NSDateComponents *components = [[NSCalendar currentCalendar] components:NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit fromDate:[NSDate date]];
NSInteger currHr = [components hour];
NSInteger currtMin = [components minute];
NSString *startTime = #"10:00";
NSString *endTime = #"16:00";
int stHr = [[[startTime componentsSeparatedByString:#":"] objectAtIndex:0] intValue];
int stMin = [[[startTime componentsSeparatedByString:#":"] objectAtIndex:1] intValue];
int enHr = [[[endTime componentsSeparatedByString:#":"] objectAtIndex:0] intValue];
int enMin = [[[endTime componentsSeparatedByString:#":"] objectAtIndex:1] intValue];
int formStTime = (stHr*60)+stMin;
int formEnTime = (enHr*60)+enMin;
int nowTime = (currHr*60)+currtMin;
if(nowTime >= formStTime && nowTime <= formEnTime)
{
// Do Some Stuff..
}

Answer 4

The array timings contains you array. You may want to include the time in 24 hour format for uniformity.
NSDateFormatter *dateFormatter = [NSDateFormatter new];
[dateFormatter setDateFormat:#"HH:mm"];
NSDate *now = [NSDate date];
__block NSString *status = nil;
[timings enumerateObjectsUsingBlock:^(NSDictionary * dict, NSUInteger idx, BOOL *stop)
{
NSDate *date1 = [dateFormatter dateFromString:dict[#"time_from"]];
NSDate *date2 = [dateFormatter dateFromString:dict[#"time_to"]];
NSDateComponents *date1Components = [[NSCalendar currentCalendar]components:NSHourCalendarUnit|NSMinuteCalendarUnit
fromDate:date1];
NSDateComponents *date2Components = [[NSCalendar currentCalendar]components:NSHourCalendarUnit|NSMinuteCalendarUnit
fromDate:date2];
NSDateComponents *nowDateComponents = [[NSCalendar currentCalendar]components:NSHourCalendarUnit|NSMinuteCalendarUnit
fromDate:now];
NSInteger fromMinutes = date1Components.hour*60+date1Components.minute;
NSInteger toMinutes = date2Components.hour*60+date2Components.minute;
NSInteger nowMinutes = nowDateComponents.hour*60+nowDateComponents.minute;
if (nowMinutes>fromMinutes && nowMinutes<toMinutes) {
status = dict[#"timing_name"];
}
}];
NSLog(#"%#",status);